Finance

Instant, private, and free

Immediate Annuity Calculator.

Estimate level payments and payout for an ordinary immediate annuity.

On-device calculationNo signup
01

Set your values

Results update as you type.

Payment per period: $106.07

Payment per period

$0.00
Total payout: $12,727.86

Total payout

$0.00
Total interest: $2,727.86

Total interest

$0.00

FAQs

How does the immediate annuity calculator work?

Enter the requested values to see a deterministic result. Assumptions are explicit and no live market or tax data is fetched.

Use Cases

Retirement Income Planning

Estimate how much annual income you can expect from a lump-sum investment in an immediate annuity, helping you plan for retirement cash flow.

Example: If you invest $200,000 at 4% for 20 years, your estimated annual payment is about $14,700.

Comparing Annuity Options

Use the calculator to compare different principal amounts, terms, and rates to see how they affect your level payments, aiding in decision-making.

Example: Compare a 10-year term vs. a 20-year term at the same rate to see the trade-off between payment size and duration.

Frequently Asked Questions

What is an immediate ordinary annuity?
An immediate ordinary annuity is a financial product where you make a lump-sum payment and, in return, receive a series of level payments starting one period from the purchase date. Payments are typically made at the end of each period (e.g., annually).
How does this calculator estimate payments?
This calculator uses the standard present value formula for an ordinary annuity. Given your principal (lump sum), the term (number of periods), and the interest rate, it computes the level payment amount that would exactly amortize the principal over the term.
What inputs do I need to use this calculator?
You need to provide the principal amount (the lump sum you invest), the term (how long the annuity will pay out, in years or periods), and the interest rate (the expected annual return). The calculator then outputs the estimated level payment per period.

Tips & Common Mistakes

Tips

  • Ensure the interest rate you enter is realistic and consistent with the payment frequency (e.g., annual rate for annual payments).
  • Remember that this calculator provides an estimate; actual annuity payments may vary based on fees, taxes, and insurer terms.
  • Consider the impact of inflation on your fixed payments over time—level payments may lose purchasing power.
  • Use the calculator to explore how a longer term reduces your annual payment but provides income for more years.

Common Mistakes to Avoid

  • Using a nominal annual rate when payments are more frequent than annually, without adjusting the rate and term accordingly.
  • Forgetting that an ordinary annuity pays at the end of each period, not at the beginning—this affects the payment amount.
  • Assuming the estimated payment is guaranteed; it's an estimate based on inputs, not a quote from an insurance company.

Last updated: August 13, 2026