Annuity Calculator
Calculate future value of regular annuity payments at a growth rate.
- Last reviewed
- August 26, 2026
- Cost
- Free to use
- Data
- Runs in your browser
- Reviewed by
- Anton Jonson
Future Value
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Total Payments
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Interest Earned
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Methodology
How this calculator handles inputs
This calculator uses the values you enter above and applies the formula explained in the guide below. Results update in the browser and are intended for quick planning, comparison, and sanity-checking.
- Use consistent periods, currencies, and units across inputs.
- Review any assumptions before using the result in a decision.
- Recalculate when rates, prices, tax rules, or business terms change.
Important note
This tool provides general planning information only. It is not tax, legal, financial, accounting, or investment advice. Check the current rules for your location and speak with a qualified professional before making a high-stakes decision.
Guide
How it works
Use this calculator to estimate the future value of an annuity funded with regular payments.
What this calculator does
The annuity calculator projects how regular payments grow over time at a stated return rate. It supports ordinary annuity and annuity due timing.
It uses:
- regular payment amount
- payment frequency
- annual growth rate
- annuity type
Annuity Formula
FV = PMT × (((1 + r)^n - 1) / r)
Where:
- FV = future value
- PMT = regular payment
- r = periodic return rate
- n = total payment periods
Example calculation
If:
- Monthly payment = 500
- Annual return = 5%
- Years = 20
- Payments = 240
Then:
- Total payments = 120,000
- Payments compound over time
- Future value exceeds payments
- Difference is interest earned
The annuity future value depends on payment timing and return.
What is an annuity?
An annuity is a series of payments made or received over time. In planning, it can describe either saving into a stream or receiving income from one.
Why annuity value matters
- projects regular payment growth
- compares payment frequency
- shows interest earned
- supports income planning
When to use this calculator
- projecting regular investments
- comparing payment timing
- estimating future annuity value
- checking long-term growth
Common mistakes
- confusing ordinary annuity and annuity due
- using annual rate as periodic rate
- ignoring fees or taxes
- assuming returns are guaranteed
Ordinary annuity vs annuity due
Ordinary annuity payments occur at the end of each period. Annuity due payments occur at the beginning.
Annuity due grows slightly more because money is invested earlier.
FAQs
What is an annuity?
An annuity is a stream of regular payments over time.
How do you calculate annuity future value?
Apply the annuity future value formula using payment amount, periodic rate, and number of periods.
What is a good annuity return?
A good return depends on risk, fees, guarantees, and time horizon.
What is the difference between ordinary annuity and annuity due?
Ordinary pays at period end. Annuity due pays at period start.
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