Money & finance
Calculation method and formula
r = Interest rate [% p.a.] ÷ 1200; n = round(Years to retirement × 12); Current savings × (1 + r)^n + Monthly contribution × ((1 + r)^n − 1) ÷ r
Understand the inputs
- Current savings
- Use a measured value or your own assumption.
- Monthly contribution
- Use a measured value or your own assumption.
- Interest rate
- Unit: % p.a.. Use a measured value or your own assumption.
- Years to retirement
- Use a measured value or your own assumption.
Assumptions and limitations
Compounding is monthly, with contributions at month-end. The annual rate is divided by twelve. Taxes, fees, inflation and fluctuating returns are not part of the model.
The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.