Retirement

Immediate Annuity Calculator

See the level monthly income a lump sum can provide right away over a chosen number of years, while the balance keeps earning a return.

  • Free
  • No sign-up
  • Updated for 2026

Your annuity

$
%
yr

Enter your lump sum, return and years to see the monthly income.

Worked example

With these example inputs:

  • Lump sum$200,000
  • Expected annual return5%
  • Income period20 yr

Monthly income: $1,320

  • Starting amount$200,000
  • Monthly withdrawal$1,320
  • Total withdrawn$316,779
  • Interest earned$116,779

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What this immediate annuity calculator does

This calculator finds the monthly income from a lump sum. You enter the lump sum, a return, and a period. The tool then shows the income in your chosen currency. It also shows the interest earned over time. This is a quick retirement tool. Try a range of inputs to compare. The result helps you plan a steady income.

What an immediate annuity is

An immediate annuity turns a lump sum into regular income. You hand over a sum today. It pays you back month by month. The balance keeps earning a return as it pays. So the money lasts across the whole period. It uses the currency you pick.

How it is calculated

The tool takes your lump sum. It spreads it across the months you choose. The leftover balance still earns the return. So each payment is level and steady. The result is your monthly income. The calculator takes care of this for you.

What the result tells you

The result shows your monthly income. A two hundred thousand lump sum at five percent over twenty years pays about thirteen hundred a month. A bigger sum pays more. A higher return pays more too. So it shows the income you can draw. It is a clear monthly figure.

The lump sum

The lump sum is the money you put in. It is your starting pot. A larger pot pays a larger income. So the sum sets the scale of the payout. Every dollar added lifts the monthly cheque. So a bigger pot stretches further. Enter the amount you have.

The expected annual return

The expected annual return is the yearly growth. The balance keeps earning while it pays. A higher return means a higher income. So the rate lifts every payment. Use a realistic long-term figure. So do not assume the best case. Pick a return you can expect.

The income period

The income period is how long it pays. A longer period spreads the sum thinner. So each payment is smaller. A shorter period pays more each month. So the money runs out sooner. So match the period to your needs. Enter the years you want.

How to use it

Enter your lump sum first. Add the return and the period. Read the monthly income in your chosen currency. See the interest earned too. Then try different figures. Compare a few amounts. Use it to plan a steady income.

The limits of this calculator

It has a few clear limits. It assumes a steady return every year. Real returns rise and fall. It ignores fees, tax, and inflation. A real annuity may differ in terms. So treat it as an estimate. So use it thoughtfully.

Common mistakes to avoid

A common mistake is assuming a fixed return. Real markets are bumpy. Another is ignoring inflation. It eats into your income over time. Some forget fees and tax. Others pick too short a period. Seeing the full picture helps you avoid them.

A final tip

Use this to plan a steady income. Remember the balance keeps earning as it pays. Use a realistic return for the long run. Match the period to your needs. Keep some savings outside the annuity. Do not forget inflation and fees. A careful check guides your plan.

Frequently asked questions

What is an immediate annuity?

It converts a lump sum into income that starts straight away, paid for a set period. This tool estimates the level monthly amount a self-funded version would provide.

How is it different from a deferred annuity?

An immediate annuity pays out now, while a deferred annuity grows for years first and pays later. Use the deferred calculator for the growth phase.