Annuity Calculator
Use the annuity calculator to find the final balance of an annuity.

What Annuity Calculator does
An annuity calculator lets you project the future value of a series of regular payments, factoring in an initial principal, periodic deposit amounts, and an assumed rate of return. You enter your investment details, and the tool calculates the total accumulated balance at the end of your chosen timeframe, showing how your savings can grow over time. This makes it useful for retirement planning or understanding the long-term impact of consistent contributions.
How to use the Omni Calculator Annuity Calculator
- 1
Select the annuity type (annuity due or immediate) from the dropdown menu
- 2
Enter your initial principal amount and the amount of each regular deposit
- 3
Input the expected annual interest rate and the number of years for the investment period
- 4
Review the calculated future value and total contributions displayed in the results section
Best for
This option suits investors and savers who want a straightforward way to forecast how regular deposits will grow over time, particularly for retirement income planning.
Limitations
- Assumed rate of return is a projection, not a guarantee
- Results depend on the accuracy of the interest rate entered
- Does not account for taxes, fees, or inflation adjustments
Annuity Calculator FAQ
- Can I calculate monthly contributions with this tool?
- Yes, you can enter periodic payment amounts and select the compounding frequency to model monthly or annual contributions over your chosen timeframe.
- What is the difference between annuity due and immediate annuity?
- Annuity due payments are made at the beginning of each period, while immediate annuity calculations typically start payments right away; the tool lets you choose which structure matches your savings plan.
- Does the calculator include inflation or taxes in the results?
- No, the tool provides a nominal future value based on the interest rate you enter; it does not adjust for inflation, taxes, or investment fees.
- Is the interest rate fixed or can I test different scenarios?
- You can enter any assumed rate of return to see how changes affect the projected growth, allowing you to compare multiple scenarios side by side.
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