Free tools

Simple calculators I use myself. Change the numbers — results update instantly. Works in any currency.

What share of your income do you keep?

Monthly income

Monthly spending

See what steady monthly investing can become.

Starting amount

Monthly contribution

Yearly return (%)

Years

Based on your savings rate and the 4% rule (25× yearly spending).

Monthly income

Monthly spending

Already invested

Yearly return (%)

For education only — not financial advice. Returns are not guaranteed.

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