Inflation Impact Calculator – See How Inflation Erodes Purchasing Power
Use this free inflation impact calculator to see how rising prices affect your money over time. Enter an amount, inflation rate and years to see future cost, total increase and purchasing power retained.
Inflation Impact Calculator
See how inflation erodes purchasing power. Enter an amount, inflation rate and years to see future cost and purchasing power loss.
How the inflation impact formula works
Future cost and purchasing power use the same inflation multiplier:
Future cost = Current amount × (1 + r)t
Purchasing power retained = 100 ÷ (1 + r)t
- r = annual inflation rate (as a decimal, e.g. 0.03 for 3%)
- t = number of years
Understanding inflation impact on your finances
Inflation is the gradual increase in the general price level of goods and services. When inflation rises, each unit of currency buys fewer goods than before. This calculator helps you quantify that effect: how much will today's money be worth in the future, and what fraction of your purchasing power will remain?
The impact of inflation is often underestimated. At 3% annual inflation, prices double in about 24 years. A $50,000 savings goal today might require $90,000 in 20 years just to have the same purchasing power. Planning for retirement, education or major purchases without accounting for inflation can leave you short.
Why purchasing power matters
Purchasing power retained shows what percentage of today's buying power your money will have. If the result is 60%, your future amount will buy only what $60 buys today for every $100 you set aside. This is crucial when comparing investment returns: a 5% nominal return with 4% inflation gives only 1% real return.
Use this calculator alongside our compound interest and retirement calculators to plan for long-term goals. Ensure your investments aim to beat inflation so your wealth grows in real terms. This tool runs in your browser and does not store your data.