Annuity Calculator

An annuity calculator is a free online tool that projects your monthly and total payouts from a fixed annuity. It supports both immediate and deferred annuities, showing balance growth, payout income, and a comparison against your original principal. Free, no sign-up required.

Annuity Details

?Enter your principal.
?Enter your annual interest rate.
?Enter your payout period.
?Enter your deferral period.
End of inputs

Your Annuity Projection

Monthly Payment
$1,055.67

For 25 years

Annual Payment
$12,668.04

6.33% of principal

Total Payout
$316,701.00

Over 25 years

Balance at Payout
$200,000.00

No deferral

Deferral Growth
$0.00

No deferral

Payout Type
Immediate

Starts immediately

Principal: $200,000.00. Rate: 4.00%. Payout: 25 years. Deferral: 0 years. Monthly: $1,055.67. Total payout: $316,701.00 (no deferral).
Balance & Cumulative Payout Over Time
Principal vs Balance at Payout vs Total Payout
Key Insights
Your 25-year payout period is long — approaching a lifetime payout horizon. Longer terms mean smaller monthly payments because the principal is spread thinner. If you want lifetime income, consider a life-only or life-with-period-certain annuity rather than a fixed-period contract.
This is an immediate annuity: payouts begin right away on the full $200,000.00. Immediate annuities convert a lump sum into a guaranteed monthly income stream — useful at retirement when you need income now. You trade liquidity for lifetime (or fixed-period) income.
Your annual payout of $12,668.04 is 6.33% of principal — a moderate payout rate typical of 15–25 year fixed payouts. Compare to the 4% safe withdrawal rate used for invested portfolios: annuities can pay more because they consume principal, not just returns.
Your 4.00% credited rate is moderate — typical of fixed annuities. Shop around: MYGAs and indexed annuities can offer higher effective rates. Variable annuities have market-linked returns but no guaranteed rate.
No deferral period — payouts start immediately. Adding a deferral period would let the principal grow tax-deferred before payouts begin, increasing the eventual monthly payment. Consider deferral if you don't need income right away.

Guide

How to Use This Calculator

  1. 1Enter your principal — the lump sum you'll pay the insurer for the annuity.
  2. 2Set the annual interest rate. Fixed annuities typically credit 3%–5%; this rate applies during both deferral and payout.
  3. 3Choose the payout period. A 20–25 year payout is common; longer terms mean smaller monthly payments but more total income.
  4. 4Set the deferral period. 0 = immediate annuity (payouts start now); >0 = deferred annuity (principal grows first, then payouts begin).
  5. 5Review the monthly payment, annual payment, and total payout in the result panel. The balance chart shows growth during deferral and drawdown during payout.
  6. 6Compare principal vs balance at payout start to see how deferral compounds your money before payouts begin.
  7. 7Use the AI insights to assess payout adequacy, deferral benefit, rate competitiveness, and payout horizon fit.
Formula

How It's Calculated

Balance at payout start (after deferral):

  B = P × (1 + r)^startYears

  where P = principal, r = annual rate, startYears = deferral period.

Monthly payout (amortization over payout period):

  PMT = B × i / (1 − (1 + i)^−n)

  where i = r/12 (monthly rate), n = years × 12 (total payout months).

Total payout:

  Total = PMT × n

Example: $200,000 principal, 4% rate, 25-year payout, 10-year deferral.
- Balance at payout start = $200,000 × 1.04^10 ≈ $296,049
- Monthly payment = $296,049 × (0.04/12) / (1 − (1+0.04/12)^−300) ≈ $1,565
- Total payout over 25 years ≈ $469,500

For an immediate annuity (0 deferral), balance = principal and payouts
begin right away. Life-contingent annuities pay more than fixed-period
because mortality credits supplement the interest rate.
Glossary

Key Terms

FAQ

Frequently Asked Questions

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