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Enter the starting balance, your monthly contribution, the annual rate, the term, and how often interest compounds; the projected final value updates as you type.

Annuity Calculator Online


Project how a series of regular contributions - an annuity-style payment stream - grows alongside a starting balance over the years you keep paying in.

Use the monthly-contribution field to model a regular annuity payment on top of an initial lump sum, which suits retirement-savings and annuity-planning estimates.


Key features

  • Enter the starting principal, monthly contribution, annual rate, term, and compounding frequency; the final value, total contributed, and interest earned update as you type.
  • Compare monthly, annual, and daily compounding to see how frequency changes the result over the same term.

Privacy and data handling

All math runs locally in the browser - no upload, no account, and your numbers never leave your device. Results are illustrative estimates based on a constant rate and are not financial advice.


Related tools

To treat the same projection as plain compound interest, the compound interest calculator runs the same growth formula.

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Frequently Asked Questions

What does Annuity Calculator Online do?

Project how a starting balance and regular contributions grow with compound interest over time.

When should I reach for annuity calculator online?

Reach for it when planning an annuity or retirement pot: enter a starting principal and monthly contribution across your chosen term, pick Monthly, Annually, or Daily compounding, and read the final value alongside the total you contributed and the interest earned.

What complementary tools work well alongside annuity calculator online?

Results are an estimate based on a constant rate; actual returns vary and this is not financial advice.