Savings Goal Calculator
Find the monthly contribution needed to reach a savings target.
Every calculation runs locally in your browser. Nothing you enter here is sent to a server or stored anywhere.
Required monthly contribution
$641
Projected balance
$50,000
after 5 years
Projected balance over time
For informational and educational purposes only — not financial, investment, or tax advice, and not a substitute for consulting a qualified professional about your specific situation. TrueMeasureKit is not liable for decisions made based on these results. See our Terms of Service.
How this is solved
This works backward from the compound interest calculation: given your goal, current savings, timeline, and expected return, it solves for the exact fixed monthly contribution that closes the gap. Your current savings compound on their own, and your monthly contributions compound on top — the required amount accounts for both. A higher expected return lowers the required contribution, but assumes more investment risk, so treat the return rate as a planning assumption rather than a guarantee.
Frequently asked questions
How is the required monthly contribution calculated?
It solves the compound-growth annuity formula for the monthly payment that, combined with any starting balance and assumed interest rate, reaches your target by the deadline you set.
Why does assumed interest rate matter so much for a savings goal?
Higher assumed returns mean investment growth covers more of the goal, so the required monthly contribution drops — but assuming too high a rate for a short-term or cash goal can leave you short if actual returns are lower.