Annuity Payout Calculator

Calculate the fixed monthly payout from an annuity balance over a set number of years.

Methodology reviewed 2026-07-27. See our review process.

Formula and method

This calculator uses the values you enter and applies the calculation immediately in your browser. The main output formulas are:

  • Monthly payout: (() => { const r=rate/1200; const n=years*12; return r===0 ? balance/n : (balance*r)/(1-Math.pow(1+r,-n)); })()

Some formulas are undefined for certain input combinations, such as division by zero, equal x-values in a slope calculation, or logarithms of non-positive numbers. In those cases the live tool reports that the result is undefined instead of displaying Infinity or NaN.

Examples

  • Example: with Annuity balance = 200000, Annual rate = 5 %, Payout period = 20 years, this calculator returns Monthly payout = 1319.91.
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Frequently asked questions

Is Annuity Payout Calculator free to use?

Yes. Annuity Payout Calculator is completely free, has no usage limit, and does not require an account, email, or API key.

Does Annuity Payout Calculator store or upload my data?

No. Annuity Payout Calculator calculates everything locally in your browser. Nothing you type is sent to a server or stored by SpecWhale.

How accurate is Annuity Payout Calculator?

Annuity Payout Calculator uses a standard formula (see the Method section above for the exact expression). For high-stakes financial, medical, or legal decisions, confirm the result with a professional or an authoritative source before relying on it.

Can I embed Annuity Payout Calculator on my own website?

Yes. Use the "Embed this tool" snippet on this page to add a free, working copy of Annuity Payout Calculator to your own blog post or page.

SEO and sharing notes

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