Retirement Income Calculator

Estimate sustainable retirement paychecks from your nest egg

Retirement income planning starts with how much your portfolio can pay you each month without running out before your target horizon. This calculator solves for level monthly withdrawals that fully amortize the balance over your chosen retirement length and expected return. Compare the result with the classic 4% rule benchmark to sanity-check aggressive or conservative assumptions.

To stress-test a fixed withdrawal you already have in mind, pair this with the Retirement Withdrawal Calculator and SWP Calculator.

Payment formula

With monthly compounding, sustainable income uses the standard annuity payout formula: monthly payment equals portfolio balance times the monthly rate divided by one minus one plus rate raised to the negative number of months.

$$ PMT = PV \times \frac{r}{1 - (1+r)^{-n}} $$

Frequently Asked Questions

What is the difference between nominal and inflation-adjusted mode?

Nominal mode uses your stated return directly. Inflation-adjusted mode converts return and inflation into a real return before solving, which is useful when you want purchasing-power-stable planning.

Does this include Social Security or pensions?

No. Enter only investable portfolio assets. Add guaranteed income sources separately when building your full retirement budget.

Why show the 4% rule?

The 4% guideline is a common heuristic for perpetual withdrawals. Comparing against it helps you see whether your horizon-based plan is more or less conservative.

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Estimate sustainable retirement paychecks from your nest egg

Payment formula

Frequently Asked Questions

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