An annual annuity is a type of retirement plan in which the same amount is invested each year and the interest rate remains fixed.
To see the mathematics of an annuity (and the formulas with 4 worked out examples), click here.

The annuity calculator allows you the option of solving for any of 4 variables.
• Click on the variable you don’t know
• Input the other 3 numbers
• Click on the “CALCULATE” button
• the answer is then displayed

Scroll down for 4 annuity examples to help familiarize yourself with this calculator.

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4 EXAMPLES

1) You invest 2,000 per year at 9% interest for 10 years. What is the amount after 10 years?
Click on the TOTAL button, enter the 3 amounts, click CALCULATE and the answer is $33,120.59

2) At the end of 20 years, an annuity invested at 7.5% interest is now worth $95,200. How much was invested per year?
Click on the ANNUAL AMOUNT button, enter the 3 amounts, click CALCULATE and the answer is $2,045

3) $2,000 was invested annually at a rate of 10% interest and the annuity is now worth $1,000,000. How long did this take?
Click on the YEARS button, enter the 3 amounts, click CALCULATE and the answer is 40.2735 years.

4) If you want to have $500,000 after investing $2,000 per year for 40 years, what interest rate do you need?
Click on the RATE button, enter the 3 amounts, click CALCULATE and the answer is 7.5854 per cent.