What a sinking fund does
A sinking fund breaks a known future expense into smaller contributions. It works well for annual bills, repairs, holidays, travel, and other costs you expect.
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Free savings goal tool
Sinking Fund Calculator
Calculate how much to save monthly, every two weeks, or weekly for a planned future expense.
Private by design: your entries stay in your browser and are not submitted to MoneyPathTools.
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Set the goal
Enter the amount, what you already have, and when you need it.
Understand the estimate
How to use your result
Change any input to update the estimate instantly. Use current statements and realistic amounts whenever possible.
How the estimate works
The amount still needed is divided by the approximate number of contribution dates before your deadline. Monthly and biweekly timing are estimates, so rounding the contribution up can add breathing room.
Keep it current
Update the target if the expected cost changes. Keep near-term bill money somewhere accessible and review account fees, withdrawal rules, and insurance coverage.
Sources and important limits
- Annual Planning Tool — Consumer Financial Protection Bureau
- An Essential Guide to Building an Emergency Fund — Consumer Financial Protection Bureau
This calculator provides educational estimates only. It is not financial, tax, legal, credit, or investment advice. Actual outcomes can differ because of timing, account rules, fees, rate changes, and other details.
Track several goals in one place
The Sinking Funds + Annual Bills Planner tracks targets, contributions, due dates, and recurring annual expenses in Excel.