How inflation changes what the euro is worth.
Real value today of that amount
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Needed in future to match
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Purchasing power lost
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Two ways to read the same erosion
Inflation is the slow leak in the value of money. A euro today and a euro in ten years are not the same thing, even though the coin looks identical. This calculator shows that erosion from two angles at once. It tells you the real value today of a future sum, what your money will actually buy after prices have risen, and it tells you the future amount you would need to preserve the buying power you have now. Both come from the same compounding maths, just run in opposite directions.
The compounding behind the numbers
Inflation compounds exactly like interest, only against you. To find what €1,000 will buy after a number of years, you divide by one plus the rate, raised to the power of the years. To find what you would need in future to match €1,000 today, you multiply by the same factor. At 3 percent a year, the annual factor is 1.03, and over a decade it compounds to roughly 1.344. That single factor drives both answers, which is why a small change in the assumed rate moves the result so much over long horizons.
Irish inflation, measured by the Consumer Price Index, has swung widely in recent years, from near zero to well above 5 percent during the energy spike. The European Central Bank targets 2 percent across the euro area over the medium term, which is why 2 to 3 percent is a sensible default for long-range planning. Use the actual recent rate for short horizons and something near the target for anything a decade out.
€1,000 over ten years at 3 percent
Take €1,000 held flat for ten years while prices rise 3 percent a year. Its real value falls to about €744 in today’s money, a loss of €256 of purchasing power without you spending a cent. Looked at the other way, you would need about €1,344 in ten years to buy what €1,000 buys now.
| Amount today | €1,000 |
| Inflation rate, each year | 3 percent |
| Real value in 10 years | €744 |
| Purchasing power lost | €256 |
| Needed in 10 years to match | €1,344 |
That is more than a quarter of the value gone in a decade at a fairly mild rate. Push the rate to 5 percent and the same €1,000 keeps only about €614 of its punch. Money sitting idle is not standing still, it is sliding backward.
Why this matters for savers and retirees
The practical lesson is that a deposit account paying 2 percent while inflation runs at 3 percent is losing real value every year, and DIRT at 33 percent on the interest only deepens the hole. This is the core case for putting long-term money where it has a chance to outpace inflation, accepting investment risk and the 41 percent exit tax on funds in exchange. It also reframes retirement planning: a pension pot that feels large today must be measured in future euro. If you are planning income 20 or 30 years out, run the figure through this tool first, because the headline number flatters you.
Is a pay rise that matches inflation actually a raise?
No, it just holds you level. If prices rise 3 percent and your salary rises 3 percent, your real spending power is unchanged. Only an increase above the inflation rate leaves you genuinely better off, which is worth remembering at a pay review.
Does inflation affect my tax bands?
Indirectly. When the standard rate band and tax credits are not increased in a Budget but wages rise with inflation, more of your income drifts into the 40 percent rate. That silent effect is called fiscal drag, and it is one reason the cut-off point and credits are reviewed each October.