Savings Goal Calculator
Find out how many months it takes to reach a savings goal with regular contributions.
This tool runs entirely in your browser. Your files are never uploaded to a server.
53
Months to reach goal
4.4
Years to reach goal
What this calculator does
Simulates a savings balance growing month by month with a level monthly contribution and a compounded return, and reports how many months and years it takes to reach a target amount.
How to use it
Enter the goal amount, current savings, monthly contribution and expected annual return. Keep every amount in one currency, and try a few return assumptions since future returns are never guaranteed.
Worked example
Starting from 2,000 toward a 20,000 goal, contributing 300 per month at a 5% expected annual return, the goal is reached in 53 months. Automated tests verify this figure.
Formula and calculation order
Each month, the balance is multiplied by (1 + monthly rate) and then the monthly contribution is added, where monthly rate is the annual return divided by 12. The simulation runs until the balance meets or exceeds the goal, or stops at a 1,200-month (100-year) cap and reports that the goal is not reached at this pace.
What a 0% return means
At 0% expected return, the balance simply adds the monthly contribution each month with no growth, turning this into a straightforward savings countdown — useful for cash held without meaningful interest.
Assumptions and limits
The model assumes one constant monthly rate, contributions made in full every month, and no withdrawals. It does not model variable returns, taxes on investment gains, fees, inflation, or a change in contribution amount partway through.
Scope, sources and privacy
This is an educational estimate, not investment advice; a real balance's actual path depends on market returns that vary and are never guaranteed. The compounding mechanics were checked against U.S. SEC Investor.gov education materials. Reviewed September 2026. Calculation runs locally in the browser; Quiklio does not upload the entered values.
Frequently Asked Questions
- Why might my actual timeline differ from this estimate?
- The calculator assumes one constant annual return every month; real investment returns vary year to year and are never guaranteed, so treat this as a planning scenario and try a lower rate alongside your expected one.
- Does the monthly contribution grow with inflation in this model?
- No — the contribution amount stays fixed in nominal terms for the whole simulation. If you want a contribution that rises with inflation, see the FIRE calculator, which models that explicitly.
- What happens exactly at a 0% expected return?
- The compounding term drops out and the balance simply increases by your monthly contribution each month, so the months-to-goal figure becomes a simple division of the remaining gap by that contribution.