Annuity Calculator
See the fixed monthly income a lump sum could provide over a set payout period, and how much of it is interest.
Annuity Calculator
This is an educational estimate, not financial advice. Real returns vary and are not guaranteed, and it ignores taxes, fees and inflation unless stated. For decisions about your retirement, consult a licensed financial professional. 🔒 All figures are calculated in your browser — nothing is entered anywhere or stored.
🔒 Nothing you enter is sent anywhere or stored. All processing happens in your browser.
Features
Turns a lump sum into income
See the fixed monthly payout a principal supports over your chosen payout period at a given rate.
Shows the interest earned
The result breaks out how much you receive in total and how much of that is interest on top of your principal.
Model any scenario
Change the principal, rate or period to compare payouts and find an income that fits your plan.
Private and instant
The annuity math runs in your browser — nothing is uploaded or stored.
How it works — in four simple steps
No signup, nothing to install — it all runs in your browser.
Enter the principal
Add the lump sum you'd put into the annuity.
Set rate and period
Enter the annual interest rate and how many years you want the payout to last.
Calculate the payout
See the fixed monthly income, the total paid out, and the interest earned.
Compare scenarios
Adjust the inputs to see how the monthly income changes.
How it works
An immediate annuity turns a lump sum into a stream of fixed payments. You hand over a principal, it earns a steady return, and you receive a regular payout that draws the balance down to zero over the payout period — a way to turn savings into predictable income.
This calculator uses the standard annuity-payout formula to work out the fixed monthly payment a given principal supports at your interest rate over the years you choose, then shows the total paid out and how much of that is interest earned along the way.
It models a simple fixed-term annuity for planning; real annuity products vary in fees, guarantees, inflation adjustments and survivor options. Treat this as an educational estimate, not a quote or advice. It runs entirely in your browser.