Annuity Payout Calculator

Use this calculator to find the payout from a retirement annuity or solve how long a fixed payout can last. This page also keeps the formula, examples, FAQs, and references close by so you can check the result with confidence.

What This Annuity Payout Calculator Helps You Do

Payout amount depends on balance, interest, timing, and payment schedule; duration uses the payout amount and the same schedule. Review the formula and examples below if you want to see how the result is derived.

This page is meant to give you a fast answer, but it also helps you double-check the math before you make a decision. Start with the inputs that you already know, run the calculation, and then compare the output with the formula, examples, and FAQs below so you can see whether the answer fits the situation you are modeling.

If the result looks off, the usual causes are a unit mismatch, a missing decimal, the wrong scenario, or a value that needs to be entered as a rate instead of a total. The notes on this page are designed to make those checks easy without forcing you to leave the calculator and search for context elsewhere.

  • Use the calculator first for a quick estimate.
  • Use the formula to understand how the result is built.
  • Use the examples to compare common use cases.
  • Use the references when the answer depends on a standard or assumption.

Common Checks

A quick result is useful, but the best result is one that still makes sense when you look at it a second time. If you are comparing scenarios, try changing one input at a time so you can see which variable has the biggest impact on the final answer. That makes it much easier to spot whether the calculation matches your expectations.

It also helps to keep the context of the problem in mind. A calculator can tell you the math, but you still need to decide whether the input represents a total, a rate, an average, or a category-specific assumption. When in doubt, start with a simple example from the page and scale up from there.

  • Check that every unit matches the rest of the problem.
  • Keep rates, totals, and averages separate.
  • Adjust one variable at a time when testing scenarios.
  • Use the smallest realistic input first, then scale upward.

Scenario Planning

This calculator is especially useful when you want a quick answer before you commit time, money, or effort. Try one baseline input set, then change a single number and compare the result so you can see how sensitive the answer is to that variable.

That makes the page useful for more than just arithmetic. It becomes a small decision aid that helps you compare options, test assumptions, and explain the final number with confidence when you need to share it with someone else.

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Result

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Quick Answer: Payout amount depends on balance, interest, timing, and payment schedule; duration uses the payout amount and the same schedule. Review the formula and examples below if you want to see how the result is derived.

How to Calculate Annuity Payout Calculator

  1. Choose the mode: Decide whether you want the payout amount or the payout duration.
  2. Enter the annuity details: Fill in the balance, rate, and payment schedule.
  3. Read the result: The calculator returns either the regular payout amount or the number of years it lasts.

Annuity Payout Calculator Formula

Payment = balance x i / (1 - (1 + i)^-n) | Duration from payout is solved with a logarithm
Variable Meaning Unit
Balance Starting annuity value $
i Periodic interest rate %
n Number of payout periods periods

Worked Examples

USA - Monthly payout
  • Starting balance: $500,000
  • Annual interest rate: 5%
  • Years: 20
  • Payments per year: 12
  • Payment timing: End of period

Result: $3,299.84

A $500,000 annuity can support a monthly payout near $3,300 over 20 years at 5%.

UK - Duration from payout
  • Starting balance: £250,000
  • Payment amount: £1,400
  • Annual interest rate: 4%
  • Payments per year: 12
  • Payment timing: End of period

Result: 18.74 years

This payout should last almost 19 years under the stated assumptions.

EU - Annuity due payout
  • Starting balance: €300,000
  • Annual interest rate: 3.5%
  • Years: 15
  • Payments per year: 12
  • Payment timing: Beginning of period

Result: €2,093.29

Beginning-of-period payouts are slightly higher because each payment earns an extra period of interest.

How to Interpret Your Results

Range Meaning Action
Lower payout The balance or rate is more conservative Check whether you used the intended interest rate.
Typical payout The annuity behaves as expected Use it for retirement or distribution planning.
Long duration The payout can last many years Confirm that the rate and payment amount are realistic.

Frequently Asked Questions

It is the regular payment you can withdraw from an annuity balance.

Yes. Switch to the duration mode and enter the fixed payout amount.

It is a payout schedule where each payment happens at the beginning of the period.

Yes. Monthly, quarterly, and annual payout schedules give different results.
Planning note: The payout schedule depends on the interest and payment timing assumptions you enter.

References

Last reviewed: March 2026