Savings Withdrawal Calculator

How to use the savings withdrawal calculator

What this calculator does

This calculator models a savings account that earns interest while you make monthly withdrawals. It can answer three planning questions: how long a balance may last, what level monthly withdrawal fits a chosen period and target ending balance, or what balance may remain after a planned period. It is a cash-flow estimate, not a guarantee of bank returns, inflation-adjusted purchasing power, taxes, fees, or investment performance.

When to use it

Use it to test a retirement bridge, plan withdrawals during a career break, estimate how long an emergency reserve can support a fixed monthly need, or compare a conservative withdrawal amount with a higher one. It is especially useful for scenario planning before you commit to a spending level.

How to calculate

1. The calculator opens with a complete demonstration: a $100,000 balance, a first withdrawal on August 25, 2026, a $500 monthly withdrawal, and a 2% nominal annual rate compounded monthly. The results and example XLSX are immediately available.
2. Choose an option under I want to calculate. For duration, provide the balance, withdrawal, rate, and advanced assumptions. For monthly withdrawal, also enter the withdrawal length and desired remaining balance. For remaining balance, enter the withdrawal length and amount.
3. Replace the example values with your own assumptions. Results and the monthly schedule update live. Review the primary result first, then confirm total withdrawals, interest earned, final date, and ending balance.
4. Select Download Excel to export the current typed assumptions and full schedule. Reset clears the demonstration and computed state; Excel export stays unavailable until a new complete valid scenario is entered.

Input guide

I want to calculate is a required choice that determines the unknown. Balance of your savings is a required U.S.-dollar amount greater than zero; enter plain digits and an optional decimal point, such as 100000. Higher balances generally support longer or larger withdrawals. First withdrawal on is a required date; a future date allows pre-withdrawal growth under the selected rate. Length of withdrawals: years and Extra months are whole-number controls required when solving monthly withdrawal or remaining balance; 20 years and 0 months means 240 monthly periods.

Withdrawal amount is the starting monthly dollar amount, required for duration and remaining-balance modes. Annual interest rate is a nominal percentage from 0% to 50%; enter 2 for 2%, not 0.02. Desired remaining balance is the dollar floor you want to preserve. In withdrawal mode it is the terminal target; in duration mode it stops the schedule before the account falls below that level. Compounding method converts the nominal annual rate into an equivalent monthly rate. Timing of withdrawals distinguishes beginning-of-month from end-of-month cash flows. Annual growth of withdrawals raises the withdrawal every 12 payments; for example, 2.5 means the next year's monthly withdrawal is 2.5% larger. Avoid commas used as decimal separators, scientific notation, negative amounts, or a target balance above the amount available at the first withdrawal.

Output guide

The primary result changes with the selected goal: a duration, a monthly withdrawal, or an ending balance. Monthly withdrawal shows the first scheduled payment. Total withdrawn sums all withdrawals, including a smaller final payment where necessary. Interest earned is total account interest during the modeled period, including growth before the first withdrawal. Number of withdrawals is the count of monthly payments. Last withdrawal on is the date of the final scheduled payment. Balance after last withdrawal is the terminal amount after the last period. The schedule columns show each payment number, date, opening balance, interest credited for the period, withdrawal made, and closing balance. Zero interest is valid; a zero or very small ending balance means the selected withdrawal nearly exhausts the modeled funds.

Worked example

With the startup assumptions, the nominal 2% annual rate compounded monthly produces a monthly rate of about 0.1667%. A beginning-of-month withdrawal is deducted before that month's interest is credited. Repeating that sequence produces roughly 244 withdrawals, with the final payment reduced to avoid a negative balance. The first-open results show the exact modeled totals and dates, and the Excel workbook reproduces the same canonical schedule.

For background on deposit rates and compounding, see the U.S. Securities and Exchange Commission's explanation of compound interest. For deposit-account protections and account ownership rules, consult the FDIC's deposit insurance resources.