Most calculators show you a fantasy number. This one also shows it in today's purchasing power — what that money will actually buy when you retire.
Where does the €400 a month come from? My free NEEDS/WANTS/KEEP budget planner finds it — the same file I use to pay my own savings plan first.
Get the free plannerAssumptions: monthly compounding, contributions at month-end, constant return and inflation, no taxes or fund costs (returns are before tax — in Germany remember the Vorabpauschale and capital-gains tax reduce net results). This calculator is financial education, not investment advice (WpHG). Past returns don't guarantee future results.