Inflation: definition, causes, and how it’s measured

Inflation is the rate at which the general price level of goods and services rises, eroding the purchasing power of a currency. When inflation runs at 3% a year, a basket that cost $100 last year costs $103 this year, and the same paycheck buys a little less.

Most central banks treat low, steady inflation as healthy. The U.S. Federal Reserve and the European Central Bank both target 2% over the medium term, arguing that mild price growth keeps spending and investment moving without burning savings.

Inflation isn’t one number, though. Headline inflation tracks everything in the consumer basket. Core inflation strips out food and energy because their prices swing fast. Wage inflation, asset inflation, and producer-price inflation each tell different stories about where pressure is building.

For businesses with offshore teams, inflation matters twice over: it shapes domestic wage demands and it shifts the real cost of paying overseas staff in a weakening or strengthening currency.

How it works

Inflation has two main drivers and several measurement tools. The drivers are demand-pull (too much money chasing too few goods) and cost-push (input costs like energy, raw materials, or wages rising faster than productivity). A third force, expectations, locks the cycle in: once workers and firms expect 5% inflation, they bake it into wages and contracts.

Statistical agencies measure inflation by pricing a fixed basket of goods and services month after month. The three workhorses sit below.

The Fed watches PCE most closely. The ECB watches HICP. Most news headlines quote CPI because it lands first.

When inflation runs too hot, central banks raise interest rates to cool borrowing and spending. When it runs too cold, or turns into outright deflation where prices fall, they cut rates or buy bonds to push money back into circulation. That balancing act is the heart of monetary policy.

Examples

A few real episodes show how inflation behaves across regions and decades.

In 2022, U.S. CPI peaked at 9.1% in June — the highest reading since 1981 — driven by post-pandemic demand, supply-chain knots, and the energy spike that followed Russia’s invasion of Ukraine. The Federal Reserve responded with the sharpest rate-hike cycle in 40 years, lifting the federal funds rate from near zero to 5.25–5.50% by July 2023.

The euro area hit 10.6% in October 2022, again pushed by energy. By April 2024, ECB HICP had cooled to 2.4%, and the bank began cutting rates in June 2024, its first cut since 2019.

Zimbabwe’s 2008 hyperinflation is the textbook extreme. Monthly inflation peaked at roughly 79.6 billion percent in November 2008, forcing the country to abandon its currency for the U.S. dollar and South African rand. Venezuela followed a similar arc from 2017 onward, with the IMF estimating annual inflation above 1,000,000% in 2018.

Closer to outsourcing hubs, the Philippines posted CPI of 6.0% on average in 2023, easing to 3.2% in 2024 as food and transport prices stabilised. India’s CPI ran 5.4% in 2023 and around 4.9% in 2024. Both rates sit above the U.S. and euro-area targets, which means BPO clients paying in dollars still got a real-cost cushion even as local wages climbed.

Related terms

• Deflation: the opposite of inflation, where prices fall and debts get heavier in real terms.
• Stagflation: high inflation paired with stagnant growth and rising unemployment.
• Cost of living: the household-budget impact of inflation in a given city or country.
• Monetary policy: central-bank tools (rates, reserves, bond buying) used to steer inflation.
• Purchasing power parity: how much a currency actually buys in a foreign market after inflation differences.
• Cost-of-living adjustment: contractual pay rises tied to a published inflation index.
• Exchange rate: the price of one currency in another, often swayed by inflation differentials.

FAQ

What’s a healthy rate of inflation?

Most developed-economy central banks target around 2%. That number is high enough to keep spending and investment flowing, low enough that households don’t feel their savings shrinking.

How is inflation different from cost of living?

Inflation is the percentage change in a price index over time. Cost of living is the dollar amount needed to maintain a given lifestyle in a specific place, so two cities can share the same inflation rate but very different cost-of-living levels.

Why do central banks raise interest rates to fight inflation?

Higher rates make borrowing more expensive, which cools consumer spending and business investment. Less demand chasing the same supply slows price growth, ideally without tipping the economy into recession.

Does outsourcing help companies hedge against inflation?

It can. When domestic wages rise faster than offshore wages, moving roles to lower-inflation labour markets like the Philippines or India trims real cost growth, provided exchange-rate moves don’t wipe out the saving.

What’s the difference between core and headline inflation?

Headline inflation includes everything in the basket. Core strips out food and energy because those categories swing wildly month to month. Policymakers lean on core to read the underlying trend.

Can inflation ever be negative?

Yes — that’s deflation, and it sounds friendlier than it is. Falling prices tempt households to delay purchases, which weakens demand, cuts business revenue, and can spiral into job losses.

Inflation reshapes labour costs faster than most operating models can adjust. If domestic wage growth is eating into your margins, explore outsourcing options on Outsource Accelerator’s BPO directory to see where offshore teams can rebalance the math.