# Annuity Payout Calculator

> Calculate the monthly income you can receive from a fixed annuity.

Page: https://askcalculators.com/calculator/annuity-payout-calculator/
Definition: https://askcalculators.com/calculator/annuity-payout-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/annuity-payout-calculator/schema.json
Version: 7.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/annuity-payout-calculator/?principal=250000&rate=5&years=20

## Inputs
- principal: Investment Amount ($); type=number; optional; default=250000
- rate: Interest Rate (%); type=number; optional; default=5
- years: Payout Duration (Years); type=number; optional; default=20

## Outputs
- result: Result; format=text; primary

## Formula
Monthly payout = P ÷ n when r = 0; otherwise P·r ÷ [1 − (1+r)^(−n)], where r is the monthly return and n is the number of monthly withdrawals.

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.