The global disinflation process and its costs

Article from the Monthly Report

Following the exceptionally strong rise in consumer prices in recent years, the global economy appears to be heading towards a “soft landing”. Inflation is on the decline worldwide. While double-digit inflation rates were not uncommon in 2022, price stability targets have recently come back within reach in many places. Against this backdrop, a number of central banks have already started lowering their key interest rates again. At the same time, economic activity is broadly robust despite monetary policy remaining tight. It has even strengthened somewhat this year. 

Compared with previous episodes of disinflation, this has allowed inflation to be curbed fairly quickly and painlessly. This is partly the result of monetary policy tightening. Estimates and simulations for the euro area suggest that the rise in interest rates has caused inflation to slow down markedly. That said, other factors have also made significant contributions to disinflation. Falling commodity prices and subsiding supply-side disruptions have supported economic activity at the same time. However, severe economic slumps have largely been avoided for other reasons, too. Savings and orders that were accumulated during the coronavirus pandemic, loose fiscal policy, and industrial policy initiatives have boosted demand for goods, services and labour in many places. 

However, some of these economically favourable factors are making it difficult to achieve inflation targets. Labour markets continue to be tight, wage growth remains brisk and inflation is still strong, especially in the services sector. Inflationary risks predominate on the supply side, too. This suggests that monetary policy should be data-dependent, in line with the ECB Governing Councils communication.

1 The background to the recent surge in inflation

The current global disinflation process follows the sharp rise in inflation rates observed from the beginning of 2021. As the coronavirus pandemic subsided and, later, in the wake of Russia’s war of aggression against Ukraine, inflation picked up sharply in many places. In the group of advanced economies, the annual rate of change in the consumer price index (CPI) had risen to 8.6 % by October 2022. Two years earlier, it had stood at just 0.7 %. In some major economies, inflation rates even peaked in double-digits during the course of 2022. The last time that similarly high rates had been recorded was back in the 1980s (see Chart 2.1). Consumer price inflation increased significantly in emerging market economies, too.

 Consumer prices in G7 countries
 Consumer prices in G7 countries

The remarkable rise in inflation rates worldwide was initially driven by the unexpectedly rapid recovery in global demand for goods. 1 In order to halt the downturn in the global economy following the outbreak of the coronavirus pandemic and to avoid a protracted period of economic weakness, policymakers around the world took extensive monetary and fiscal support measures. Many of these support measures were aimed at bolstering aggregate demand. For instance, some countries, including the United States, significantly increased unemployment benefits or offset their citizens’ income losses through one-off payments. Other countries, particularly in Europe, introduced or expanded labour market policies such as short-time work to safeguard jobs and income. 2 At the same time, consumption of contact-intensive services (such as visits to restaurants or hairdressers) was severely restricted due to public health measures taken to contain the spread of the pandemic. Instead, households increasingly purchased goods. As a result of this shift in demand, global industrial production rose considerably and global trade experienced a rapid and strong recovery (see Chart 2.2). 

Global industrial production and merchandise trade
Global industrial production and merchandise trade

The shift in demand towards goods exacerbated pandemic-related supply and production bottlenecks and led to price increases at various levels of the value chain. Many enterprises were unable to quickly adjust their production to rapidly rising demand. In addition, interruptions to production caused by the pandemic exacerbated supply bottlenecks. Cross-border supply chains proved to be especially vulnerable. This was due not least to China, whose strict zero-COVID policy led to repeated closures of businesses and ports. 3 Bottlenecks in shipping also contributed significantly to a shortage of key industrial intermediate inputs. At times, some regions of the world lacked containers to transport goods, while, elsewhere, ships were queuing up at ports. One reason for this was the heterogeneous economic developments across regions due to local waves of infection and differing policy responses. All of this was accompanied by supply disruptions, sharply rising commodity prices, higher transport costs and mounting producer prices. Indicators of supply chain disruptions, such as the Global Supply Chain Pressure Index compiled by the Federal Reserve Bank of New York, reached new highs (see Chart 2.3, left-hand side). In this environment of sharply rising production costs and high demand, enterprises in the manufacturing sector, in particular, were also able to significantly increase their mark-ups. 4 Overall, consumer price inflation increased considerably. 

Global Supply Chain Pressure Index and commodity prices
Global Supply Chain Pressure Index and commodity prices

The rise in commodity prices as a result of Russia’s war of aggression against Ukraine intensified the already high global price pressures further. Numerous commodity prices – especially for energy and food – rose again sharply following the outbreak of war (see Chart 2.3, right-hand side). This was attributable primarily to the high degree of uncertainty surrounding future energy supplies from Russia and the limited availability of alternative suppliers, at least in the short term. While Russian gas deliveries to Europe were gradually cut, EU Member States tried to meet their ongoing needs by making purchases from other countries and increasing their gas storage levels. As a result, gas prices rose sharply in 2022, especially in Europe, but also in other regions. 5

Finally, the recovery in demand for services contributed to inflation. Once pandemic-related restrictions were lifted, the previously highly elevated demand for goods gradually abated again. There was now a marked amount of pent-up demand, particularly with respect to service consumption, which had been heavily affected by measures taken to contain the pandemic. Service prices rose significantly, causing the increase in consumer prices to become even more broadly based. 

At the same time, labour market conditions, which had already been tight in many places before the crisis, intensified and wage growth increased. Greater demand for labour was faced with a labour supply that was, to some extent, subdued as a result of the pandemic. 6 The number of job vacancies rose sharply in many places. In the United States during the winter of 2022, for instance, there were two job vacancies for every unemployed person. This strengthened the bargaining power of workers who had suffered sizeable real income losses due to unexpectedly strong inflation. Accordingly, wage growth picked up to a considerable degree.

2 Monetary policy response and past experiences of disinflation

At the beginning of the recent period of high inflation, central banks faced the challenge of reliably identifying the drivers of inflation in a timely manner. Some economists cited supply shortages caused by the pandemic and, later, Russia’s war of aggression against Ukraine as the main reason for the sharp rise in consumer prices. 7 Others highlighted the role of the extensive monetary and fiscal policy support measures that stimulated demand. 8 In retrospect, an econometric analysis for the United States and the euro area suggests that both supply-side and demand-side factors were important. 9 In the United States, however, demand played a much greater role. 10 In the euro area, by contrast, a larger contribution was attributed to supply-side influences (see Chart 2.4). 11  

Determinants of consumer prices in the euro area and the United States
Determinants of consumer prices in the euro area and the United States

Central banks responded to the high rates of inflation with substantial tightening measures, in some cases after initial hesitation. Up until the start of 2022, the central banks in advanced economies, in particular, largely refrained from tightening their monetary policies despite the considerable spike in inflation. One likely factor behind this was the fact that the rise in prices was, in many places, attributed to temporary supply shocks. However, demand also appeared to be broadly robust. Furthermore, the inflationary impact of supply-side shortages proved more persistent than originally thought in many cases. As the risks of deanchoring inflation expectations and of inflation spreading to labour markets increased, central banks in advanced economies responded with substantial interest rate hikes. At this point in time, inflation rates in most advanced economies were already well above their targets. The Federal Reserve System’s Federal Open Market Committee raised monetary policy interest rates in the United States by no less than 5.25 percentage points over one-and-a-half years. In the euro area, the deposit facility rate rose from − 0.5 % in June 2022 to 4 % in September 2023 (see Chart 2.5).

Monetary policy interest rates in the euro area and the United States
Monetary policy interest rates in the euro area and the United States

Thus far, economies have proved resilient to the substantial tightening of monetary policy. Concerns about widespread recessions and a sharp rise in the unemployment rate have not materialised. 12 In fact, aggregate output in advanced economies continued to grow overall up to the end of the period under review. Most emerging market economies proved resilient, too.

At the same time, inflation rates have declined significantly since the end of 2022. The decline in inflation seen across countries was similarly synchronous to the previous increase, albeit less steep at the end of the period under review. In the group of advanced economies, the annual rate of the CPI had fallen to 2.8 % by June 2024, according to provisional data. Compared with its peak in 2022, this represented a drop of almost 6 percentage points. The normalisation of energy prices played a key role in this regard. In the case of core components, i.e. excluding energy and food, price pressures proved more persistent. This holds especially true for some services. Although the CPI core inflation rate in advanced economies declined by 2.6 percentage points from its peak, at 3.2 % most recently, it remains markedly above levels that would be compatible with the objective of price stability over the medium term. The disinflation process – i.e. the reduction in inflation – is therefore not yet complete from the perspective of central banks’ mandates.

Many observers now consider a soft landing – a return to price stability without any major disruptions to the real economy – to be likely. Like a number of central banks worldwide, the Eurosystem has now started lowering its monetary policy interest rates again. Nevertheless, monetary policy remains a challenge. The inflation rates targeted by monetary policymakers are still being exceeded in many places, and in some of these there has recently been a lack of progress with regard to achieving these targets. Given how comparatively robust economic developments have been thus far, the question therefore arises as to whether the tightening of monetary policy is continuing to have a dampening effect. 

3 Lessons from the past

Inflationary episodes and subsequent periods of disinflation are not uncommon. In the past, too, periods of low and declining inflation were repeatedly interrupted by inflationary surges, which were also often due to the interplay between unexpected developments on the supply side and the demand side. Especially in the 1970s and 1980s, this translated into sharp rises in energy prices. 13 In some cases, households and enterprises adjusted their inflation expectations following these developments. This is one reason why it was not always possible to curb high inflation quickly. Attempts to contain inflation over the long term by means of income policies and price controls were unsuccessful. 14 Successful disinflation periods were generally linked to a tightening of monetary policy. 15

Identifying disinflation episodes using a statistical procedure allows for comparisons between countries and over time. A common dating method is based on a paper by Ball (1994). This identifies phases in which underlying inflation declined significantly. 16 Amongst a large sample of 46 advanced and emerging market economies, there have been almost 230 completed episodes of disinflation since the 1960s according to this method. Among the G20 economies, there were no less than 55 episodes, three of which were in Germany (see Chart 2.6). These include the curbing of inflation following the energy price shocks of the 1970s and early 1980s. Germany also experienced disinflation after the end of the reunification boom. Global median inflation rates fell by 5 percentage points during periods of disinflation. This almost always took several years, however. It is also worth noting that, even in the past, disinflation periods often took place in many regions at the same time. 

Disinflation episodes in G20 economies
Disinflation episodes in G20 economies

Declines in high rates of inflation have generally been accompanied by considerable drops in economic activity. In these cases, real gross domestic product (GDP) fell behind its trend. The ground lost due to such setbacks and bouts of weaker growth was often not regained quickly. 17 A popular measure of the economic cost of disinflation – known as the sacrifice ratio – is the ratio of GDP losses, measured as the sum of the percentage deviations of GDP from its trend, to the decline in underlying consumer price inflation. On average for the disinflation episodes under consideration, the sacrifice ratio has a value of around 1. 18 This means that each reduction of 1 percentage point in the inflation rate was accompanied by an average loss of GDP of 1 %. In advanced economies, the sacrifice ratio has tended to be somewhat higher. 19 Applied to the current situation, the reduction in the (in some cases, double-digit) inflation rates should therefore have been widely accompanied by recessions. 20 However, there have also been examples of relatively painless disinflation processes in the past (see Chart 2.7). 21  

Distribution of calculated sacrifice ratios
Distribution of calculated sacrifice ratios

Both the successes in combating inflation and the associated drops in economic activity are likely to have been, not least, the result of monetary policy tightening. Especially in recent decades, central banks have preferred to raise monetary policy interest rates in order to do so. 22 Interest rate hikes affect household and corporate expectations, longer-term interest rates, asset prices and exchange rates via various channels and have a dampening effect on lending and aggregate demand. This dampening of demand, together with expectation effects, curbs wages, producer prices and, ultimately, consumer prices. 23  

Estimates show the effectiveness of monetary policy interest rate steps in the euro area and the United States. 24 Vector autoregressive models 25 can be used to estimate the dynamic relationships between short-term interest rates, price-adjusted and seasonally adjusted GDP as well as its key expenditure components, and consumer price inflation. 26 In this context, the impact of monetary policy is derived based on assumptions about the timing of the transmission process. 27 An unexpected rise of 100 basis points in the short-term interest rate in the past was estimated to dampen the euro area inflation rate at its peak by just over 1 percentage point. Euro area GDP was pushed down by almost 2 % and did not start slowly catching up with the previous trend until two-and-a-half years after tightening had begun. 28 The decline in investment, and especially housing investment, was particularly pronounced. In Germany, too, these are considered to be sensitive to interest rates (see the supplementary information on the impact of monetary policy tightening on housing investment in Germany). In the United States, the inflation-dampening and real economic effects were qualitatively similar, but less pronounced than in the euro area (see Chart 2.8). 29  

Macroeconomic responses to monetary policy shocks
Macroeconomic responses to monetary policy shocks

Supplementary information

On the impact of monetary policy tightening on housing investment in Germany 

Price-adjusted housing investment in Germany at the end of 2023 was around 10 % below its peak in 2020. Previously, housing investment had risen steadily during the protracted upswing in the residential real estate market. 1 The decline in investment coincided with the tightening of monetary policy in the euro area from July 2022. Housing investment is considered to be particularly interest rate-sensitive, partly because it is largely financed on credit. 2 It is therefore not surprising that the tightening of monetary policy was an instrumental factor in the latest decline in housing investment. 

A structural vector autoregressive model allows the development of housing investment to be decomposed into the contributions of its driving factors. The model incorporates the annual rates of change in housing investment, construction prices and land prices relating to residential real estate. 3 The latter two variables can be seen as components of housing prices. 4 In addition, the model comprises the monetary policy interest rate and the annual rates of change in real GDP and in the Harmonised Index of Consumer Prices (HICP) for the euro area. 5

The model distinguishes between various drivers of housing investment by means of sign restrictions on the impulse responses. The focus is on housing-specific supply and demand shocks as well as monetary policy shocks. Unfavourable housing supply shocks are assumed to increase consumer, construction and land prices and dampen housing investment. Monetary policy shocks are unexpected policy interest rate changes that deviate from the usual response to macroeconomic conditions. Unexpected monetary policy tightening dampens consumer price inflation and real GDP in the euro area, as well as housing investment in Germany. However, a monetary policy shock drives construction and land prices in different directions. As with other asset prices, the price of land falls in response to a restrictive monetary policy shock. 6 Construction prices, on the other hand, rise due to the higher cost of capital tied up in ongoing construction projects. 7 Housing-specific demand shocks are defined as influences that push construction and land prices as well as housing investment in the same direction. 8

Table 2.1: Assumptions on the identification of shocks1 
Variable affectedHousing supplyHousing demandMonetary policy
Construction prices (Germany)

+

-

+

Land prices (Germany)

+

-

-

Housing investment (Germany)

-

-

-

Shadow rate (euro area)

.

.

+

GDP (euro area)

.

.

-

HICP (euro area)

+

.

-

1 Assumptions on the impact of adverse supply, demand and monetary policy shocks immediately after they occur. Construction and land prices as well as housing investment refer to Germany; the remaining variables refer to the euro area. A minus sign indicates a negative impact; a plus sign indicates a positive impact. For cells with a dot, the direction of the effect is not determined beforehand.

According to the results, particularly unfavourable supply shocks have dampened housing investment since 2021. Housing investment had increased up to the end of 2020, partly owing to the favourable monetary policy stance and favourable supply conditions. The beneficial effects of housing demand shocks unfolded until 2022. The supply-side barriers that dampened housing investment from the beginning of 2021 likely relate to labour shortages, material shortages and the energy crisis. 

Shock decomposition of housing investment in Germany
Shock decomposition of housing investment in Germany

Restrictive monetary policy shocks diminished housing investment further from 2022 onwards, exerting their strongest negative effect as early as the 2022‑23 winter half-year (October-March). In the first quarter of 2023, this effect alone meant that the annual growth rate of housing investment was down by around 2 percentage points. It appears that this effect expired towards the end of 2023. Meanwhile, demand for housing deteriorated unexpectedly in the second half of 2023. 9 By contrast, the supply side supported housing investment from mid-2023.

According to the results, the restrictive monetary policy stance was thus swiftly and markedly transmitted to housing investment in Germany. However, the tightening effect is now likely to have peaked already. 

Footnotes
  1. See Deutsche Bundesbank (2021c).
  2. Erceg and Levin (2006) show for the United States that investment in durable goods, such as residential property, exhibits a particularly strong and swift reaction to monetary policy shocks. Likewise, calculations based on the Bundesbank’s macroeconomic model suggest that housing investment in Germany has the strongest reaction of all GDP expenditure components within the first year following an interest rate change. For more information on the Bundesbank’s macroeconomic model, see Haertel et al. (2022).
  3. The model's empirical estimation is based on the period from the first quarter of 2003 to the fourth quarter of 2023.
  4. See Deutsche Bundesbank (2020a, 2020b). The decomposition of housing prices into construction and land prices follows the approach used by Davis and Heathcote (2007) as well as Kajuth (2021).
  5. In the calculations, the monetary policy interest rate corresponds to an estimated shadow rate; see Geiger and Schupp (2018). The shadow rate estimates the monetary policy stance during the period from 2012 to 2022, when short-term rates were close to zero and quantitative easing measures were also being implemented.
  6. See Davis and Heathcote (2007) as well as Kajuth (2021).
  7. See Christiano et al. (2005) and Mishkin (2007). This assumption, like all the others, refers only to the quarter in which the shock occurs. It does not contravene the possible dampening effect of monetary policy on construction prices in subsequent periods. An alternative recursive identification strategy, which does not assume a direction of impact, also results in the interest rate hike having an immediate positive effect on construction prices. It also shows that construction prices do not begin to decline until some time after the shock.
  8. The type of shock identification selected is one of several options. For this analysis, however, it has the advantage that the contributions of unexpected monetary policy shocks can be distinguished from the other demand-side influences on housing investment. It also allows comparisons of these contributions with those of supply shocks to housing investment developments.
  9. The at times high contributions of the residuals reflect, for example, the estimation uncertainty regarding the extent to which the shocks impact housing investment overall.

If historical experiences were applied to the most recent cycle of monetary policy tightening, substantial macroeconomic losses should have been expected in the euro area in addition to a significant decline in the rate of inflation. This is also the outcome of simulations using a variety of macroeconomic models. These simulations show that, compared with an unchanged monetary policy, the inflation rate would have been markedly and persistently contained. However, real GDP growth in 2023 alone would also have been around 4 percentage points lower than in a scenario without monetary policy tightening (see the supplementary information on the macroeconomic impact of monetary policy tightening in the euro area). The same is likely to apply to other regions of the world, where, in some cases, the monetary policy reins were tightened to an even greater extent. 30  

Supplementary information

The macroeconomic impact of monetary policy tightening in the euro area

The ECB Governing Council responded to the exceptionally strong rise in inflation in the euro area with what has thus far been its most significant interest rate hiking cycle since the introduction of the euro. From July 2022 to September 2023, the ECB Governing Council raised its key interest rates by a total of 4.5 percentage points. From a monetary policy perspective, this was necessary in order to put an end to the very high dynamics of inflation, which reached double-digits for a time. Following its peak in October 2022, the rate of inflation then fell again significantly. Tighter monetary policy is likely to have played a role in this and thus paved the way for inflation to return to its target of 2 % over the medium term. 

The macroeconomic impact of a change in interest rates depends crucially on the associated changes in interest rate expectations. Due to arbitrage conditions, there is a close connection between short-term key interest rates and long-term capital market rates. The latter, in turn, are an important determinant of aggregate demand and thus also price developments. An increase in key interest rates lowers the rate of inflation by dampening aggregate demand. In this context, the overall monetary policy stance is not determined by the immediate interest rate step alone. It depends largely on the impact on expected short-term interest rates, summarised by the forward curve. 1 All else being equal, if further interest rates hikes are expected, this will shift the forward curve upwards. This expectation effect pushes up long-term interest rates, thereby amplifying the restrictive monetary policy effect of the current level of key interest rates. 2 Chart 2.10 depicts the evolution of various forward curves for the euro area since December 2021, when the tightening cycle began. 3

Euro area forward curves
Euro area forward curves

In order to estimate the macroeconomic effects of monetary policy tightening, we utilise a variety of macroeconomic models. Three requirements need to be taken into account here. First, both financial market variables and macroeconomic developments are influenced by a variety of factors. The impact of monetary policy decisions must therefore be isolated from these factors. 4 Second, when assessing monetary policy decisions, anticipation of future monetary policy measures must be taken into account. Due to these two requirements, we do not use any time series models, but instead only (semi-)structural macroeconomic models. 5 The effects of changes in the forward curves over time are first quantified separately and then the cumulative result is reported. Finally, there is considerable uncertainty with regard to the relative strength of individual transmission channels and time lags in monetary policy. For this reason, we use a variety of models to assess the range of outcomes: three structural DSGE models (BBk-DTANK, BBk-FS and EAGLE) and a large semi-structural model (NiGEM). 6

According to the models, the dampening effect of monetary policy tightening on euro area economic growth reached its maximum in 2023. The strongest impact on inflation follows with a certain time lag. The tightening of monetary policy weighed considerably on economic developments (see Chart 2.11, left-hand side). Based on the model average, macroeconomic growth last year was around 4 percentage points lower than if monetary policy had remained unchanged. Thereafter, the dampening effect on economic activity is likely to gradually fade. Falling demand caused inflation to decline. The dampening effect on inflation emerges with a time lag, but is more persistent (see Chart 2.11, right-hand side). According to the model calculations, from 2022 to 2025, the cumulative decline in GDP growth amounts to around 6 percentage points and the cumulative decline in inflation amounts to around 7 percentage points. 7

Macroeconomic effects of monetary policy tightening in the euro area
Macroeconomic effects of monetary policy tightening in the euro area

Based on the model analyses, monetary policy tightening contributed to the decline in the high rates of inflation. However, there are substantial differences in the model outcomes in some cases. For the impact on GDP, the range of simulation results spans up to 5 percentage points. Model uncertainty is only marginally lower for the impact on inflation. These differences are related to the characteristics of the models used, which stress the different transmission channels to varying degrees. There are also differences in how they model expectation formation. In addition, it should be noted that the models have been calibrated or estimated using historical data. If transmission mechanisms have changed in recent times, this would also have an impact on the quantitative effects. In any case, the model simulations highlight the important contribution of monetary policy to reducing high rates of inflation. 

Model overview

  • BBk-DTANK: Based on Gerke et al. (2022), a New Keynesian DSGE model with heterogeneous agents and financial market frictions. The variant of the model used here contains estimated deviations from rational expectations. In addition, the estimation period was extended to the fourth quarter of 2019.
  • BBk-FS: Based on Kühl (2018), a New Keynesian DSGE model with a detailed financial sector and financial market frictions. This model reflects the bank-based financing structure in the euro area. In the model, banks are the main financial intermediaries and pass household savings on to non-financial corporations. 
  • EAGLE: A large, calibrated and microfounded DSGE model (see Gomes et al. (2012) for documentation of the basic version). The EAGLE6 variant of the model used for the simulations comprises six country/regional blocks: Germany, France, Italy, Spain, the rest of the euro area and the rest of the world. 
  • NiGEM: Macroeconomic model of the National Institute of Economic and Social Research (see Hantzsche et al. (2018)). This is a large multi-country model that includes most OECD countries as well as major emerging market economies. International linkages are modelled through foreign trade and the interest rate-exchange rate nexus.
Footnotes
  1. In principle, the monetary policy stance is measured by the spread between key interest rates and the natural rate of interest. The natural interest rate is typically dependent on structural factors and is not influenced by monetary policy.
  2. If key interest rates were tightened and the forward curve remained (more or less) constant, the monetary policy stance would be hardly affected.
  3. In December 2021, the ECB Governing Council announced that it would normalise its monetary policy stance, initially by reducing net purchases under the asset purchase programme (APP) and the pandemic emergency purchase programme (PEPP). The first interest rate step was taken in July 2022. The reference forward curve prior to the tightening of monetary policy is from September 2021.
  4. Only the effects of Eurosystem interest rate tightening are quantified. This factors out other restrictive monetary policy impulses such as a tightening of TLTRO III conditions or an early unwinding of the central bank balance sheet. Previous findings suggest that the latter has a rather small macroeconomic effect; see Deutsche Bundesbank (2023c).
  5. Time series models likewise allow monetary policy to be considered in isolation. In most cases, however, they are only able to measure the effects of unexpected changes in interest rates. This would not fully reflect the monetary policy effects and would thus tend to underestimate the macroeconomic effects of tightening.
  6. Like many structural models in the literature, the BBk-FS and EAGLE models overstate the effect of anticipated interest rate paths (the “forward guidance puzzle”; see Del Negro et al. (2023)). For the quantification, those models therefore assume that 30 % of agents form their expectations based not on the forward curve, but instead on the (counterfactual) model-endogenous monetary policy rule. This approach, as well as the selection of 30 %, is based on Coenen et al. (2022).
  7. This is in line with the estimates in European Central Bank (2023b).

4 The current disinflation process: a soft landing?

The current disinflation process initially progressed at a rapid pace in the euro area and other advanced economies. Inflation rates around the world have declined considerably since the peak of the inflation surge in 2022, and price stability appears to be within reach again in many places. Compared with past experiences, initial successes in combating inflation were achieved relatively quickly. This holds particularly true for the euro area. 31 Only in a few past episodes did underlying inflation ease at a similarly rapid pace. However, the most recent episode had also been preceded by an exceptionally rapid rise in inflation. The current disinflation process began earlier in the United States, but so far has progressed somewhat more gradually than in the euro area (see Chart 2.12, left-hand side). 

Consumer prices and economic activity in disinflation episodes
Consumer prices and economic activity in disinflation episodes

At the same time, drops in economic activity have so far been moderate. The remarkably rapid tightening of monetary policy after an initial lag would have led one to expect a considerable slowdown in the real economy. Indeed, economic growth in the euro area was very subdued, especially last year. Measured against the previous path of growth, there were distinct real GDP losses. However, these were no larger than in previous periods of disinflation. This is already remarkable given the above average decline in inflation. It becomes even more noteworthy when one takes into account the extraordinary additional burdens arising from the extreme increases in energy prices, the high level of uncertainty caused by the Russian war of aggression against Ukraine, and weak foreign demand. In the United States, where these factors were less significant, macroeconomic activity was only slightly below its trend (see Chart 2.12, right-hand side). 

Overall, the disinflation process has been relatively painless thus far. For almost all major advanced economies, the sacrifice ratios calculated for the current disinflation episode were markedly below their historical median by the end of 2023. Admittedly, this snapshot may paint an overly favourable picture, as further GDP losses could be incurred before price stability returns. 32 This is indicated, for example, by the latest OECD forecasts. 33 Yet, even if the growth outlook, which is moderate in some cases, is factored into the calculation, the sacrifice ratios remain rather low. Even for Germany, which was hit hard by the energy crisis and weak industrial activity, the ratio has remained within historical norms. Much lower values are calculated for the other major euro area members. Disinflation costs in those countries appear to be as mild as in the United States (see Chart 2.13). 

Sacrifice ratios for the current disinflation episode
Sacrifice ratios for the current disinflation episode

5 Possible reasons for the relatively painless disinflation process thus far

Diminishing supply-side disruptions facilitated rapid disinflation and reduced macroeconomic costs. Not only did various disruptions to macroeconomic production processes contribute to the global surge in inflation in 2021 and 2022, but they also benefited the disinflation process later on as they dwindled away. Lockdowns and pandemic-related supply chain disruptions no longer posed a major obstacle to global production, at the latest when China abandoned its zero-COVID policy at the end of 2022. The shift in demand back to services also mitigated bottlenecks in the supply of intermediate inputs and on transport routes. The intertwining of supply chains was smooth once again, which boosted global production. At the same time, this curbed price pressures at upstream stages. The decline in energy commodity prices from their highs at the outbreak of the Russian war of aggression against Ukraine had a similar effect. Many non-energy commodities also dropped significantly in price. Overall, therefore, producer prices for goods in advanced economies declined for the most part over the course of last year. 

The normalisation of energy and food prices also exerted a direct significant drag on consumer price inflation over the past two years. While the contribution to annual CPI inflation made by these two components together for the aggregate of advanced economies reached a notional peak of 4.2 percentage points in 2022, it was down to only 0.3 percentage point in October 2023. 34 In the euro area, their contribution fell from 7.2 percentage points to 0 percentage point. Since then, the progress of disinflation has been largely dependent on further declines in core inflation.

Economic activity is being supported by a number of factors that are likely to make the return to price stability more difficult rather than easier. In recent years, many economies appeared to react less strongly to interest rate hikes. The macroeconomic importance of interest rate-sensitive investment declined, and financing was increasingly provided in the form of longer-term loan agreements with fixed conditions. An uptick in the natural rate of interest may also have reduced the degree of monetary policy restriction. Moreover, fiscal policy remained rather expansionary, and normalisation following the COVID-19 pandemic also bolstered economic activity. Against this backdrop, a large part of the expenditure components of real GDP and, above all, employment developed much more robustly than in prior periods of disinflation in the United States and also elsewhere (see the supplementary information on the background to the mild disinflation process in the United States). However, this also entails risks to the further disinflation process. 

Supplementary information

Background to the mild disinflation process in the United States

Among the major industrial nations, the United States stands out in the current disinflation process with its particularly robust economy. Its economic upswing paused only briefly in the first half of 2022. In 2023 as a whole, US economic output grew by as much as 2.5 % in price-adjusted terms. Since then, expansion has continued at somewhat more moderate rates. Despite its exceptionally tight monetary policy, the US economy steered well clear of a recession. This was unlike almost every previous phase of disinflation since the 1970s. 1 The sacrifice ratio, which expresses GDP losses relative to the decline in inflation, has thus far been significantly below its historical average. 2 Many economic observers – including the OECD – are currently predicting that the return to price stability will succeed without major losses being incurred. 3

Decisive contributions to the soft monetary policy landing thus far have been made by robust labour markets. Statistically decomposing economic dynamics into their components can help in gaining a better understanding of the United States’ remarkable economic resilience in the current disinflation process. 4 Labour market developments stand out in particular. As in virtually all advanced economies, employment in the United States rose throughout the period under review. Employment growth was even stronger than usual under calm economic circumstances. Taken in isolation, this supported macroeconomic activity and dampened the costs of disinflation. There are no signs of a significant deterioration in labour market conditions in the near future, either. In this respect, the current disinflation process clearly distinguishes itself from historical patterns. The higher sacrifice ratios in the past were accompanied by considerably reduced labour input. Labour productivity developments, by contrast, have been somewhat more subdued since the spring of 2022 than typical during previous phases of disinflation (see Chart 2.14, left-hand side). However, this analysis does not take account of the fact that labour productivity had previously risen sharply within the context of the COVID-19 pandemic. 

Contributions to sacrifice ratios for the United States
Contributions to sacrifice ratios for the United States

Broad-based strength of demand likewise supported the economy. Only residential investment has declined over the past two years to a similar extent as in previous disinflation phases. The exceptionally rapid tightening of monetary policy is likely to have been an important factor here. By contrast, private consumption in the United States has recently grown broadly in line with its trend, partly because households made heavy use of the savings that they had built up during the pandemic. 5 Public sector demand continued to expand as well. Together with buoyant private consumption, this kept the sacrifice ratio low. According to current forecasts, this is unlikely to change significantly in the near future. In earlier episodes in which the United States successfully kept high inflation rates at bay, a large part of the drop in activity was attributable to private and public consumption expenditure. Private non-residential investment, by contrast, did not play a major role in the past either. Over the last two years, growth in this type of investment has even been exceptionally buoyant and, by calculation, depressed the sacrifice ratio (see Chart 2.14, right-hand side). This may also have been attributable to fiscal policy incentives. 6    

However, the good economic and labour market situation also slowed the disinflation process. Last year, the disinflation process faltered to a more pronounced degree in the United States than in other advanced economies. Since mid-2023, the annual CPI inflation rate has barely declined. Consumer prices, particularly in the services sector, continue to rise exceptionally sharply. Against this backdrop, members of the Federal Reserve’s Open Market Committee recently revised their inflation projections for 2024 and 2025 upwards again. In line with this, they also announced that interest rates would be cut only more slowly. 7 If persistently high consumer price inflation calls for monetary policy to remain tighter for even longer, this could also cloud the economic outlook.

Footnotes
  1. Only between the end of 2011 and mid-2015 did inflation also decline markedly without having a significant impact on the economy. However, as unemployment decreased only slowly following the global financial crisis, the US Federal Reserve refrained from raising interest rates at that time.
  2. As in the main article, the dating of disinflation phases and the calculation of sacrifice ratios are conducted following Ball (1994).
  3. See OECD (2024). 
  4. For a similar analysis in the context of economic upturns, see Deutsche Bundesbank (2013).
  5. In other advanced economies, the reduction of these excess savings is proceeding slowly at best. See de Soyres et al. (2023). 
  6. This applies, for example, to the Inflation Reduction Act and the CHIPS and Science Act. For a discussion of the effects on construction investment in selected sectors, see Deutsche Bundesbank (2023d).
  7. In December 2023, the members of the Federal Reserve System’s Open Market Committee still expected that inflation, as measured by the private consumption deflator, would continue to decline significantly. They projected median inflation rates of 2.4 % for the final quarter of 2024 and 2.1 % for the final quarter of 2025. By June 2024, these forecasts had been revised upwards to 2.6 % and 2.3 %, respectively. Most recently, a key interest rate of 4.1 % was considered appropriate for the end of 2025. Just six months earlier, the expectation was that interest rates would be cut to 3.6 %. See Federal Open Market Committee (2023 and 2024).

Pent-up demand from the pandemic is likely to have bolstered economic activity during the period under review. In 2020, pandemic-related production losses and supply disruptions occurred while a variety of government measures stimulated demand. 35 This led to many households accumulating involuntary savings. Meanwhile, the order books of industrial firms filled up (see Chart 2.15). High inflation and the increase in borrowing costs as monetary policy was tightened only partially reduced pent-up demand. The remaining excess demand in advanced economies mitigated the drag from the tightening of monetary policy. 

Indicators of pent-up demand
Indicators of pent-up demand

The unusually robust labour market development could also be partly due to experience gained from the pandemic. Since then, demand for labour in the major advanced economies has risen sharply. This was reflected not only in continued employment growth, but also in the number of vacancies surging on a widespread basis and remaining elevated until the end of the reporting period. Many enterprises had experienced great difficulty in filling vacancies after pandemic-related containment measures were lifted. This experience, combined with the prospect of a labour shortage due to demographic factors, is likely to have prompted firms to hire new employees. In fact, labour supply has been failing to keep pace with labour demand on a widespread basis for several years now (see Chart 2.16). 36 In the United States, in particular, this was due in part to the labour force participation rate remaining slightly subdued. 37 In Europe, by contrast, the tendency to shorten working hours exacerbated labour shortages. 38 Overall, labour markets in advanced economies remain very tight despite a certain degree of easing. 

Labour supply and labour demand in advanced economies
Labour supply and labour demand in advanced economies

A relatively loose fiscal policy and industrial policy initiatives mitigated the drag caused by deteriorating financing conditions. According to analyses by the International Monetary Fund, half of all advanced and emerging market economies loosened their fiscal policies in 2023. Even in 2022, this figure was one-third despite inflation rates being even higher. 39 Many of these measures supported the global economy directly through higher government demand. Public funds were also increasingly spent on investment and production incentives for future technologies and key industries. 40 Private investment in these sectors, which had already been rising, was further stimulated by this. 

Longer-term changes in the investment behaviour and financing structures of households and enterprises may have weakened or slowed down the real economic impact of interest rate hikes. For several decades now, the importance of physical investment in buildings and equipment has been on a general decline in many advanced economies. It is increasingly being replaced by investment in information and communication technologies and intellectual property products. 41 Intangible assets of this nature are eligible as collateral for credit operations only to a limited extent and are characterised by rapid amortisation. They should therefore be less sensitive to interest rate changes. 42 The real economy may therefore have been less affected by the sharp monetary policy tightening of recent years than historical relationships would suggest. The tendency to take on longer-term debt at fixed conditions increases transmission lags. Many households, but also enterprises, were thus able to lock in the favourable financing conditions from the low interest rate period following the global financial crisis for years. 43 As a result, the rise in interest rates is only gradually becoming apparent as a cost factor as existing liabilities are rolled over and new borrowing occurs. This is likely to have markedly slowed the drag on both investment and private consumption. 44

Ultimately, the monetary policy stance may have been less restrictive than assumed by many. The impact of monetary policy is determined by more than just the level of market interest rates that it affects. Another important aspect is where these rates stand relative to their equilibrium value, which is associated with price stability and normal aggregate capacity utilisation. 45 There are indications for a number of advanced economies that this natural interest rate may have risen since the pandemic. 46 This also applies to the euro area. 47 Such an increase in equilibrium interest rates could have lessened the tightening impulse from higher policy rates. However, these assessments are subject to a high degree of uncertainty. Additionally, from a longer-term perspective, estimated equilibrium rates remain extraordinarily low.

6 Implications for the “last mile” of disinflation

Since the start of 2024, there have been at most minor successes in the fight against inflation in some places. The analyses presented suggest that the falling inflation rates in the current disinflation process were not just the result of monetary policy. Diminishing supply-side disruptions also played an important role. Other factors slowed and obscured the transmission of the rise in interest rates to the real economy. Owing to this combination of factors, recessions were avoided in most countries. The robust economy is reducing the pressure on firms and workers to show restraint in terms of pricing and wage demands. As a result, consumer price inflation in some cases even intensified again in seasonally adjusted terms at the quarterly and monthly level at the start of 2024 (see Chart 2.17). 

Consumer prices in advanced economies
Consumer prices in advanced economies

In particular, the inflation of services prices is proving extraordinarily persistent. Consumer price inflation for services in June 2024 remained at just over 4 % in the euro area and even exceeded 5 % in the United States. In other countries, too, disinflation in the services sector is slower than has been typical in the past. 48 A key factor in this is likely to be the persistently strong wage growth, which is particularly significant in the labour-intensive services sector (see Chart 2.18). In addition, productivity growth is exceptionally subdued, especially in the euro area. The high wage growth is therefore being transmitted almost entirely to unit labour costs. In view of the labour markets remaining very tight and the real wage losses that have been incurred, wage dynamics are expected to ease off only slowly. This is likely to make it more difficult to achieve a swift return to price stability. 

Consumer prices for services and wages in advanced economies
Consumer prices for services and wages in advanced economies

A stronger economic recovery could delay a further decline in inflation rates. According to surveys of purchasing managers, business conditions have improved markedly worldwide since the start of 2024. In advanced economies, this was concentrated in the services sector and seems to be driven largely by growing demand. Accordingly, producer price inflation remained high in the services sector. 49

Relief provided by the supply side appears to have largely petered out. Indicators of supply chain disruptions, such as the Global Supply Chain Pressure Index compiled by the Federal Reserve Bank of New York, reached their lows in mid-2023. The same happened to many commodity prices. Since then, they have tended to start edging upwards again. They are therefore unlikely to make any significant contribution to further disinflation. Instead, geopolitical conflicts pose significant supply-side upside risks to consumer prices. This applies first and foremost to the tense situation in the Middle East.

Potential further interest rate cuts should therefore be carefully considered in light of incoming data. At its June 2024 monetary policy meeting, the ECB Governing Council decided to lower the three Eurosystem key interest rates by 25 basis points each given the successes made in the fight against inflation. The central banks of other major advanced and emerging market economies had already begun cutting interest rates at that time. In the United States, too, members of the Federal Open Market Committee are signalling an interest rate reversal. However, the still too strong inflation, uncertainty about the actual degree of monetary policy restriction and various upside risks call for a data-dependent approach. This is in line with the ECB Governing Council’s communication following its monetary policy meeting in early June. 50  

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Footnotes
  1. See Deutsche Bundesbank (2021a) for an analysis of global economic developments during the coronavirus pandemic.
  2. See International Monetary Fund (2021) for a summary of key fiscal measures in selected economies.
  3. For a discussion of the impact of Chinese supply chain shocks on economic activity, see Deutsche Bundesbank (2021b, 2024a) and European Central Bank (2023a).
  4. See European Commission (2023) and OECD (2023). 
  5. For more information on the driving forces behind European gas prices, see Deutsche Bundesbank (2023a).
  6. See Doornik et al. (2023).
  7. See, for example, Stiglitz and Regmi (2023). 
  8. See Summers (2021) and Furman (2022).
  9. For a detailed description of the estimation approach, see Eickmeier and Hofmann (2022). Aggregate factors are estimated using a principle component analysis and are decomposed into supply and demand through sign restrictions on the factor loadings of inflation and real economic activity. The estimation for the United States covers 202 variables in the period from the first quarter of 1970 to the first quarter of 2024. The estimation for the euro area covers 83 variables in the period from the first quarter of 2001 to the first quarter of 2024. 
  10. A recent study by Giannone and Primiceri (2024) also suggests that demand-side influences play a major role in the euro area. 
  11. Another econometric analysis using a structural vector autoregressive model points in a similar direction. According to this, domestic factors – including strong demand – were the dominant driver of the rise in inflation in the United States. In the euro area, just over half of the rise is explained by external factors. See Deutsche Bundesbank (2022a).
  12. For example, in October 2022, the International Monetary Fund expected GDP declines in the following year in countries that collectively account for more than one-third of the global economy. Economic activity was also expected to be weak for major advanced economies and China. See International Monetary Fund (2022).
  13. For a historical contextualisation of the rise in energy prices in 2021 and 2022, see Deutsche Bundesbank (2022b).
  14. See Neely (2022) and Nelson (2022).
  15. See Ari et al. (2023).
  16. Underlying inflation is approximated using a centred moving average of the annualised quarterly percentage change in the seasonally adjusted consumer price index over nine quarters. If this measure falls by at least 2 percentage points between successive local highs and lows, the intervening period is considered to be an episode of disinflation. See Ball (1994).
  17. As is customary in the literature, the calculation of disinflation costs also factors in GDP losses in the year following the end of the disinflation process. This takes into account any possible late-term effects of combating inflation. See Ball (1994). The approach, however, does not account for the possibility that the previous surge in inflation may have been the result of exaggerations with above average GDP growth rates. This could distort the trend estimate upwards. In this case, GDP losses would tend to be overstated.
  18. This is consistent with estimates from the relevant literature. See, for example, Ball (1994), Katayama et al. (2019) and Cecchetti et al. (2023).
  19. See also Mazumder (2014). 
  20. In fact, just over two-thirds of the disinflation episodes were accompanied by recessions, which were dated using the algorithm from Bry and Boschan (1971). In line with this, Cecchetti et al. (2023) found that all past disinflation episodes in the United States coincided with the recessions identified by the National Bureau of Economic Research.
  21. Among the most popular explanations in the literature for the heterogeneity of disinflation costs are differences in the strategies, transparency and independence of central banks, in the wage negotiation process and in the openness of economies. Empirically, however, only a few indicators show a robust correlation with the sacrifice ratios. What is relatively certain is that short but significant disinflation periods incurred fairly low costs. This is often interpreted as a sign that an especially decisive and rapid fight to curb inflation can increase the credibility of the central bank. See also Ball (1994), Katayama et al. (2019) and Magkonis and Zekente (2020).
  22. Previously, operational monetary policy in many places was geared towards controlling the monetary base, central bank reserves of the banking system or the exchange rate. In addition to open market operations, changes in minimum reserve requirements and foreign exchange market interventions, for example, were also used. See Bindseil (2004).
  23. See Deutsche Bundesbank (2023b), p. 39, for a schematic representation of the monetary policy transmission process. 
  24. See Ramey (2016) for an overview of the literature and a discussion of various methodological approaches for the United States. 
  25. Both models are estimated using Bayesian methods for the period from the first quarter of 1999 to the final quarter of 2023. 
  26. In addition to GDP, private consumption, gross fixed capital formation, investment in machinery and equipment and housing investment – each seasonally and price-adjusted – are entered in the model as logarithmic levels. Also included is the annualised quarterly change in the seasonally adjusted consumer price indicator relevant for the respective monetary policy. This is the HICP for the euro area and the private consumption deflator for the United States. The interest rate used for the United States is the yield on government bonds with a residual maturity of one year, and the rate used for the euro area is a one-year interbank interest rate (EURIBOR).
  27. The recursive identification scheme used here assumes that GDP and its expenditure components as well as inflation respond to a monetary policy shock, i.e. an unexpected change in the short-term interest rate, with a time lag of one quarter. By contrast, monetary policy responds immediately to unexpected changes in real economic activity and inflation. See also Peersman and Smets (2003). 
  28. These results are broadly consistent with similar estimates from the ECB, which indicate that euro area GDP declines by up to 1.25 % three years after an interest rate hike of 100 basis points. See also Lane (2023).
  29. The impact of monetary policy also differs across the euro area, as demonstrated by previous analyses that used a multi-country model. According to these analyses, the dampening effects of an interest rate hike on the real economy tend to be stronger in Germany than in France, Italy or Spain, for example. By contrast, there is relatively little drag on consumer price inflation in Germany. See Deutsche Bundesbank (2023b) and Mandler et al. (2022).
  30. The credibility of monetary policy and its impact on inflation expectations are likely to have played a crucial role in determining the degree of tightening required. If inflation expectations were aligned with past developments, inflation processes would be more persistent and would require a stronger monetary policy response. The costs of disinflation would then be correspondingly higher. See Tetlow (2022) and International Monetary Fund (2023).
  31. For this analysis, it was assumed that the disinflation process in the euro area began in the final quarter of 2022. In the three preceding quarters, the inflation rate used for dating had hardly changed. 
  32. This is mainly due to the fact that, in many places, the level of real GDP remained below its previous trend up to the end of the period under review. Even during a macroeconomic recovery, further losses would therefore accumulate until the gap has been closed. 
  33. See OECD (2024). 
  34. The significant role played by energy and food price shocks in recent inflation developments both in Germany and around the world is also underscored by a model-based decomposition. This takes account of factors including the direct and indirect effects of changes in commodity prices. See Deutsche Bundesbank (2024b) and Bernanke and Blanchard (2024).
  35. See Deutsche Bundesbank (2021a).
  36. For an analysis of the background to robust labour markets, see also Doornik et al. (2023).
  37. For a discussion of possible causes, see Abraham and Rendell (2023).
  38. See Acre et al. (2023). 
  39. See International Monetary Fund (2024a).
  40. For a discussion of such measures to promote the semiconductor industry, see Deutsche Bundesbank (2023d). In addition, there were further measures to promote green technologies in the United States, but also in Europe; see, for example, Franco-German Council of Economic Experts (2023). 
  41. The trend towards digitalisation reflected here, amongst other things, is an important driver of aggregate productivity gains. For more information, see Deutsche Bundesbank (2023e).
  42. For empirical analyses that confirm this hypothesis, see, for example, Caggese and Pérez-Orive (2022), Döttling and Ratnovski (2023) and David and Gourio (2024).
  43. See Ampudia et al. (2023).
  44. For an analysis of the implications for the housing market and private consumption, see International Monetary Fund (2024b). 
  45. See Deutsche Bundesbank (2017).
  46. See Benigno et al. (2024).
  47. See Brand et al. (2024).
  48. This is confirmed by analyses by the Bank for International Settlements; see Amatyakul et al. (2024).
  49. See Deutsche Bundesbank (2024c).
  50. See European Central Bank (2024).