Inflation: Why Your Money Buys Less Over Time

Defining Inflation#

Inflation is the sustained, general rise in the price level of goods and services over time. When inflation is positive, each euro you hold buys a smaller basket of goods than it did a year ago. The purchasing power of money erodes. Conversely, deflation — falling prices — sounds appealing but can be equally damaging, as it discourages spending and investment when consumers expect prices to fall further tomorrow.

The standard tool for measuring inflation in Germany is the Consumer Price Index (CPI), compiled monthly by the Federal Statistical Office (Destatis). The CPI tracks the prices of a representative basket of approximately 700 product categories — food, housing, energy, transport, clothing, healthcare, leisure — weighted by their share in typical household spending. The reference year is periodically rebased; currently 2020 = 100.

How the CPI Is Constructed#

Destatis surveys prices for specific products at specific retailers across Germany. The basket is updated periodically to reflect changing consumption patterns. Housing costs (including imputed rent for owner-occupiers) carry the highest weight at roughly 32%. Food and non-alcoholic beverages account for approximately 10%. Energy — electricity, gas, fuel — carries around 9%.

The Harmonised Index of Consumer Prices (HICP) is a comparable version used across the EU to allow cross-country comparisons. The ECB targets HICP inflation of 2% over the medium term for the eurozone as a whole.

Germany's 2022 Inflation Spike: The Energy Driver#

For two decades after the introduction of the euro, Germany experienced relatively modest inflation, often below the 2% ECB target. This changed dramatically in 2021–2022.

According to Destatis, annual CPI inflation in Germany reached a peak of 8.8% in October 2022 — the highest rate recorded since German reunification in the early 1990s. The primary driver was energy prices: electricity and gas prices for households surged as Russia's invasion of Ukraine in February 2022 triggered fears about supply disruptions, which then became real as Russia progressively cut gas deliveries to Europe.

Key Destatis data points for 2022:

• Energy prices (full year average): +34.2% year-on-year
• Food prices (full year average): +13.4% year-on-year
• Overall CPI (annual average): +6.9%
• Peak monthly rate: 8.8% (October 2022)

The transmission mechanism was broad: energy is an input into almost every production process. When energy prices rose, transport costs rose, manufacturing costs rose, and ultimately prices throughout the economy were pushed up — a classic example of cost-push inflation.

Types of Inflation: Demand-Pull vs. Cost-Push#

Demand-pull inflation occurs when aggregate demand in the economy exceeds productive capacity. Too much money chasing too few goods. The post-pandemic period produced some of this: government stimulus programs increased household savings and consumer demand, while supply chains were disrupted.

Cost-push inflation occurs when the costs of production rise, pushing up prices regardless of demand. The 2022 energy price spike is the textbook example. Firms face higher input costs and pass them on to consumers.

Built-in (wage-price) inflation can develop when workers demand higher wages to compensate for rising prices, and firms then raise prices to cover higher wage costs, in a self-reinforcing spiral. Germany's trade unions negotiated significant pay increases through 2023 — the IG Metall union secured a 5.2% pay rise for 2024 — which economists monitored closely as a potential source of persistent inflation.

By late 2023, German inflation had fallen significantly: Destatis reported annual inflation of 3.7% for 2023 (full year average) and approximately 2.2% by early 2024, as energy prices normalized and the ECB's rate increases took effect.