Annuity Payout Calculator

Calculate regular monthly income payouts generated by an immediate or annuitized lump sum investment.

Calculator Inputs

$
Total amount annuitized.
yrs
Length of income stream.
%
Credited interest during payout.

Calculated Results

Guaranteed Monthly Income
$1,319.91 / month
Total Lifetime Payouts $316,778.40
Total Interest Generated in Payout $116,778.40
Payout Horizon 20 Years (240 Monthly Checks)
Values calculate live as you adjust inputs.

About Annuity Payout Calculator

Calculates guaranteed periodic monthly annuity disbursements from an immediate annuity lump sum.

What is Annuity Payout Calculator?

Calculates guaranteed periodic monthly annuity disbursements from an immediate annuity lump sum.

How to Use This Calculator

  1. Enter starting lump sum balance.
  2. Choose payout duration in years.
  3. Set credited interest rate.
  4. View regular monthly payout and total cumulative income.

The Mathematical Formula & Variables

Monthly Payout = Principal * [ (r/12) / (1 - (1 + r/12)^(-12*years)) ]

Step-by-Step Worked Example

Scenario: $200,000 annuitized over 20 years at 5% interest.

  1. r/12 = 0.05 / 12 = 0.004167.
  2. Denominator = 1 - (1.004167)^-240 = 0.6310.
  3. PMT = 200,000 * (0.004167 / 0.6310) = $1,319.91 / month.

Result: $1,319.91 / month

Frequently Asked Questions

What is the difference between period certain and lifetime annuity?

Period certain pays for a fixed number of years (e.g. 20 years), while lifetime annuity guarantees income until death regardless of lifespan.