Savings Goal Calculator
How much do I need to save each month to reach my goal?
Single calculationv1.0.0Verified 2026-11-01Runs in your browser
Spec sheet
pmt_to_target_fv · v1.0.0Method
Payment to reach a future value (numpy-financial pmt)
- 01
r = annual return ÷ 12, n = years × 12 - 02
deposit = −pmt(r, n, −current, target, when) - 03
check: fv(r, n, −deposit, −current, when) = target
Limits — read before relying on it
- Constant return; real returns vary year to year.
- Ignores taxes, fees and inflation (use a real return to account for inflation).
Sources