Sinking Fund Calculator

Monthly Saving for a Future Expense

Calculate the monthly deposit needed to reach a future expense target.

Method: The calculator uses the future-value-of-annuity formula with monthly compounding.

Understanding Sinking Fund

1. What This Calculator Measures

A sinking fund is regular saving toward a known future expense.

2. How the Calculation Works

The calculator uses the future-value annuity formula to find the monthly deposit needed.

3. Formula or Rule Used

deposit = target x r / ((1+r)^n - 1).

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