Inflation Calculator for France

Method and scope

Future cost = current cost × (1 + annual inflation)^years. Purchasing power = current amount / (1 + annual inflation)^years. Inflation is a user assumption held constant; no live national inflation rate is fetched.

Using this calculator in France

The inflation rate is entered by you and stays constant. No current France CPI series is loaded. Both results use EUR: future cost describes a future price, while purchasing power describes what today's amount could buy after the entered period.

Try the starting example

Amount today: 10 000 €; Assumed annual inflation: 3%; Years: 20.

Future cost of the same purchase: 18 061,11 €.

Compare one assumption at a time

Compare future cost and remaining purchasing power together. A higher inflation assumption raises the future cost of the same basket and reduces the purchasing power of a fixed amount. This is a scenario comparison, not a current national CPI reading. These fictional scenarios use the starting inputs printed above, not your current entries in the interactive calculator.

Are you entering taxable income or the salary on your contract?

The French tax tool expects revenu net imposable after applicable deductions; it does not subtract the salary deduction again. For PER planning, use the personal deduction ceiling from your tax notice. A projected PER balance is not the cash you would receive after exit taxes.

To reproduce the table, reset the calculator, change only the named input and compare the result and any warning. Record the assumptions with your result. See worked planning examples and our calculation and correction process.

Sources and review date

• Investor.gov: compound interest tools
• MoneyHelper: mortgage calculations

Rules and method reviewed 2026-11-01. Future changes are not automatically applied. Report a correction.