Finance
Sinking Fund Calculator
Find the regular deposit needed to reach a future sum, like a replacement fund.
Formula
Deposit per period equals future amount times the periodic rate, divided by one plus the periodic rate to the power of periods, minus one.
How it works
A sinking fund sets money aside gradually for a known future cost — replacing equipment, a roof, or a bond repayment — instead of borrowing at the last minute.
FAQs
How is it different from a savings goal?
It is the same maths, framed for a planned future liability rather than a personal goal.
What if deposits are yearly?
Set deposits per year to 1 and the result is the annual deposit.
Why include interest?
The fund itself earns interest while it builds.
Are these figures financial advice?
No — they are estimates for planning only, not financial advice. Check with a qualified adviser for decisions involving large sums.
Estimates only, not financial advice. Figures are approximate and do not include all fees, taxes, or changing rates unless stated.