Annuity Calculator
Result
Annuity Calculator The Annuity Calculator finds the present value of a stream of equal monthly payments — how much a future series of payments is worth in today's money. Enter the monthly payment, annual interest rate, and number of years. The formula use — free online calculator.
Formula
- Annuity Calculator calculates its result from Payment, Rate per period, Periods. It uses the formula PMT*(1-(1+r)^(-n))/r. Change any input to recalculate the result instantly.
- The main inputs are Payment, Rate per period, Periods. Enter them in the units and format shown in the calculator.
- Use monetary amounts, rates and time periods exactly as labeled; the result reflects the assumptions entered on this page.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Annuity
- Payment: 100
- Rate per period: 0.05
- Periods: 12
Using Payment = 100, Rate per period = 0.05, Periods = 12, the calculated result is 886.3251636449.
Sample result: Calculating…
Frequently asked questions
What does the Annuity calculate?
Annuity Calculator The Annuity Calculator finds the present value of a stream of equal monthly payments — how much a future series of payments is worth in today's money. Enter the monthly payment, annual interest rate, and number of years. The formula use — free online calculator.
Which values should I enter?
Enter Payment, Rate per period, Periods using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: PMT*(1-(1+r)^(-n))/r.
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.