Retirement Withdrawal Calculator

What this calculator does

Convert a portfolio amount and an annual withdrawal percentage into a simple annual and monthly cash-flow budget.

How to use the calculator

Use the inputs and units named in this form. Select Calculate after changing the values.

How the calculation works

Annual gross withdrawal = portfolio x withdrawal percentage / 100. Monthly gross is annual gross divided by 12. After-tax budget = gross x (1 - tax percentage / 100). This is a one-year arithmetic projection; it does not simulate future portfolio returns.

Worked example

A portfolio input of 1,000,000 at a 4% withdrawal assumption gives 40,000 gross annually and 3,333.33 monthly. At an entered 15% tax assumption, it gives 34,000 annually after tax and 2,833.33 monthly.

How to interpret the result

Compare the result with the assumptions and units shown above. The calculation uses the values entered into this page.

Assumptions and limitations

The example 4% is an input illustration, not a recommendation or guarantee of sustainability. The form does not calculate actual tax brackets, inflation, investment losses, account rules, required distributions or how long the portfolio will last.

Common mistakes

Check the units and time period before calculating. An error message means the result cannot be calculated from the current inputs.

Privacy

The calculation runs in your browser. This form needs the numerical inputs shown, not names, account numbers or passwords.

Frequently asked questions