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Future Value of a Growing Annuity Due

A growing annuity whose payments arrive at the beginning of each period, accumulated to a future date.

Compounding

FV of Growing Annuity Due

Future value of growing beginning-of-period payments.

When to use: Use when growing deposits are made at the start of each period.

Calculator

Formula

FVA=PMTkg×[(1+k)n(1+g)n]×(1+k)FVA = \frac{PMT}{k - g} \times \left[(1 + k)^n - (1 + g)^n\right] \times (1 + k)

Variables

SymbolNameDescriptionUnit
FVAFuture Value of AnnuityAccumulated value$
PMTFirst PaymentThe first payment amount$
kInterest RateRate of return%
gGrowth RatePayment growth rate%
nNumber of YearsNumber of periodsyears

Real-Life Examples

Example 1: Growing Savings Due

$4,000 first year, growing 2%/year, deposited at start of year, 7% return for 25 years.

Given

PMT = $4,000.00k = 7.0000%g = 2.0000%n = 25.00 years

Step-by-Step

1.First payment = 4000; 25 annual payments at the beginning of each year
2.Payment j = 4000 × (1 + 0.02)^j, for j = 0 through 24
3.Sum the future value of each payment; total value per unit of first payment ≈ 81.0380902171
4.FVA ≈ $324,152.36
Result:$324,152.36

For these inputs, Future Value of Annuity is $324,152.36 under the stated payment, compounding and accounting assumptions.

Example 2: Growing Rent Invested

Rental income starts at $18,000/year, grows 3%/year, invested at start of year at 9% for 15 years.

Given

PMT = $18,000.00k = 9.0000%g = 3.0000%n = 15.00 years

Step-by-Step

1.First payment = 18000; 15 annual payments at the beginning of each year
2.Payment j = 18000 × (1 + 0.03)^j, for j = 0 through 14
3.Sum the future value of each payment; total value per unit of first payment ≈ 37.8686899494
4.FVA ≈ $681,636.42
Result:$681,636.42

For these inputs, Future Value of Annuity is $681,636.42 under the stated payment, compounding and accounting assumptions.

Frequently Asked Questions

The annuity due version multiplies the result by (1 + k), reflecting the extra period of growth each beginning-of-period payment receives. This produces a higher future value compared to end-of-period payments.

Use it when you make increasing contributions at the start of each period — like beginning-of-year retirement deposits that grow annually with your salary. The formula captures both the payment growth and the early-deposit timing advantage.

The difference is the ordinary growing annuity FVA multiplied by the periodic rate. At typical rates (6-8%) over 20-30 years, beginning-of-period timing adds roughly 6-8% more to the final accumulated balance.