About the Savings Withdrawal Calculator
How long your savings will last with regular monthly withdrawals while the remaining balance earns interest.
Also known as: how long will my money last, withdrawal calculator, drawdown calculator, annuity payout.
How to use this calculator
- Enter starting balance, monthly withdrawal, annual return.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
Balanceₖ = Balanceₖ₋₁(1 + r) − W
Worked example
Using the values pre-filled in the calculator above:
- Starting balance = 300,000
- Monthly withdrawal = 2,000
- Annual return = 5 %
the calculator returns:
- Money lasts: 19 yr 8 mo
- Sustainable withdrawal (never runs out): 1,250