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Annuity Calculator

Find the lump sum needed today to generate a fixed monthly payment.

Inputs

%
%

years
years

Saved Scenarios

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Lump Sum Needed Today

$303,051

Spark says

How it's calculated

Formula

PV=PMT×1−(1+r)−nrPV = PMT \times \dfrac{1 - (1+r)^{-n}}{r}
PMT
— Monthly payment
r
— Monthly rate of return
n
— Number of monthly payments

What is the Annuity Calculator?

An annuity's present value is the lump sum you'd need today, invested at a given rate, to fund a fixed series of future payments.

How to use it

  1. 1 Enter the monthly payment you want.
  2. 2 Enter the expected annual rate of return.
  3. 3 Enter how many years the payments should last.

Worked examples

$2,000/month for 20 years at 5%

Needs about $304,000 today.

Try it

Frequently asked questions

How is this different from the Retirement Savings calculator?

Retirement Savings projects the FUTURE value of contributions you make over time. This calculator does the reverse — it finds the present lump sum needed to fund future payments.