For informational purposes only. Not financial, investment, or tax advice. Results are estimates based on the inputs provided. Consult a qualified financial professional before making financial decisions.
Calculator tool
How this calculator works
Use the explanation to understand the formula, assumptions, and practical limits behind the calculator result.
What This Calculator Actually Does
This page models a fixed-term ordinary annuity: one starting amount is paid out over a chosen number of years while earning a steady rate. It estimates a monthly or annual payment from the inputs you provide.
It is not an insurer quote for a lifetime annuity. Real annuity contracts can include mortality pricing, rider fees, surrender rules, guarantees, and insurer credit risk that are not represented here.
Formula Used
Where:
- - starting lump sum
- - rate per payment period
- - number of payments
- - periodic payment
If the rate is zero, the calculator simply divides the lump sum by the number of payments.
Worked Example
| Item | Value |
|---|---|
| Present value | 100,000 USD |
| Annual rate | 4.00% |
| Term | 20 years |
| Frequency | Monthly |
| Monthly payment | about 605.98 USD |
The visual result separates the original lump sum from the interest earned during the payout period.
How to Interpret the Result
A longer payout term lowers each payment but spreads money over more years. A higher assumed rate raises the payment, but only if that rate is actually achieved. Review the term and rate together rather than focusing on one monthly number.
Contract Features Not Included
Investor.gov describes annuities as insurance contracts that may be immediate or deferred and may involve surrender charges, fees, taxes, and different contract risks. This calculator does not estimate those features. It also does not calculate tax treatment; the taxable portion depends on whether money is qualified or nonqualified and on contract details.
Related Calculators
Use the Annuity Payout Calculator for the same fixed-term payout framing with payout language, the Pension Calculator for defined-benefit plan formulas, and the Retirement Calculator for contribution-based savings projections.
Frequently asked questions
Is this the same as a life annuity quote?
No. A life annuity depends on insurer pricing, mortality assumptions, contract type, riders, and guarantees. This calculator only models a fixed payment stream over a term you choose.
What is the difference between immediate and deferred annuities?
An immediate annuity typically starts income within about a year of purchase. A deferred annuity has an accumulation period before payouts begin. This calculator focuses only on the payout math after you define the starting value.
Are annuity payments taxable?
Tax treatment depends on the contract and the money used to fund it. IRS guidance distinguishes qualified and nonqualified annuities; nonqualified contracts can have a taxable earnings portion and a nontaxable return-of-basis portion. This calculator does not estimate taxes.
Why might a real annuity payment be lower than this estimate?
A real contract may include insurer fees, rider costs, mortality pricing, guarantees, surrender features, or a lower credited rate than the steady assumption entered here.
