Time Value of Money Calculator

The time value of money is the principle that €1,000 today is worth more than €1,000 in 10 years. Two forces drive this: money today can be invested and grow, and inflation steadily erodes purchasing power over time. Together, these effects mean that comparing monetary amounts across different points in time requires adjusting for both.

At an average inflation rate of 2% per year, €10,000 held in a non-interest-bearing account would lose around 18% of its purchasing power over 10 years — effectively leaving you with €8,200 in today's terms. Germany experienced a sharp inflation spike in 2022–2023, peaking above 8%, which accelerated this erosion significantly for anyone holding large cash balances during that period.

For a rough inflation adjustment, the ECB's long-run target of 2% is a reasonable baseline. If you want to model a more conservative or recent-data scenario, use a higher figure. For comparing investment options, use your expected net-of-fees, after-tax return — these are two different questions that call for different rates.

Time value shows up in every significant financial calculation: how large a portfolio needs to be to fund retirement, how much to save monthly to reach a target, or whether paying off a mortgage early beats investing the surplus. The longer the time horizon, the more these differences compound — which is why starting earlier typically outweighs investing more later.

A real return is the growth in purchasing power after stripping out inflation. A nominal return of 7% in a year when inflation was 3% delivers a real return of roughly 4%. For long-horizon goals like retirement, real returns give a more accurate picture of whether your wealth is genuinely growing — or simply keeping pace with rising prices.