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Formula & explanation
Annuity Payout Calculator uses the following calculation:
This is a simplified model intended for planning and education. Real-world offers from lenders, institutions, or tax authorities may include additional fees, rules, or adjustments not reflected here.
Frequently asked questions
Does a longer payout period mean smaller payments?
Yes — spreading the same balance over more months lowers each individual payment but extends how long the income lasts.
What happens if I outlive the payout period?
With a period-certain payout, payments stop at the end of the term; some lifetime annuity options guarantee payments for as long as you live, at a different pricing structure.
Can payout rates change over time?
This model assumes a fixed rate for simplicity; real annuity contracts may offer fixed, variable, or indexed payout structures.