Savings goal calculator
Find an illustrative month-end contribution needed to reach a savings target.
Your scenario
Method and exclusions
Convert an effective annual return to a monthly rate. Grow existing savings and solve the ordinary-annuity future-value formula for equal month-end contributions. Returns of zero use a straight-line shortfall divided by months. No tax, fees or guarantee of returns is included.
Supporting guidance: Investor.gov compound interest tool (new tab). Guidance checked 28 October 2026; the arithmetic model remains our stated approximation.
How to use the result
Run a baseline, then change one assumption at a time. Compare the total cost or balance as well as the monthly amount. Keep excluded taxes, fees and product features on a separate checklist. Confirm decisions against actual provider documents.