Future value annuity calculator
Project the future value of equal payments with ordinary-annuity or annuity-due timing.
What this calculator covers
Use this calculator to estimate what a stream of equal payments can grow into over a fixed number of periods.
Switch between ordinary-annuity and annuity-due timing to see how beginning-of-period deposits gain one extra period of growth.
Frequently asked questions
- What is the difference between an ordinary annuity and an annuity due?
- An ordinary annuity makes each payment at the end of the period — for example, a monthly contribution deposited on the last day of each month. An annuity due makes each payment at the beginning of the period. Because annuity-due payments land one period earlier, they each have one extra compounding period, producing a slightly higher future value for the same payment amount and rate.
- What should I enter as the rate per period?
- Enter the rate that matches your payment frequency. If you contribute monthly and the account grows at 6% per year, use 0.5% (6 ÷ 12) as the monthly rate per period. The calculator does not convert an annual rate automatically — the per-period rate must be entered directly.
- How does this differ from a compound interest calculator?
- A compound interest calculator grows a single lump sum over time. This annuity calculator focuses on a stream of equal recurring payments and computes how much that payment stream accumulates. The two can be combined: a starting balance plus recurring payments is what the future value calculator covers.
- Is the output affected by taxes or contribution limits?
- No. The result is a pre-tax mathematical projection with no account-type restrictions applied. Actual growth in a 401(k), IRA, or similar account depends on tax treatment, annual contribution limits, and plan rules that vary by account type and change periodically.
Tool
Run the calculation
Result
RESULT · ANNUITY FUTURE VALUE
â„–200
Primary result
$12,345.81
$300.00 contributed at the end of each period for 36 periods at 0.75% per period grows to $12,345.81.
- Future value
- $12,345.81
- Total contributions
- $10,800.00
- Growth earned
- $1,545.81
- Payment timing
- Ordinary annuity
Step-by-step solution
- 1.Use the selected end of each period timing so each contribution compounds for the correct number of remaining periods.
- 2.Apply the annuity future value factor to 36 payments at 0.75% per period.
- 3.Separate the $10,800.00 contributed cash from the $1,545.81 created by compounding.
Walkthrough
Visual walkthrough
An annuity future value stacks repeated payments and lets each one grow for however many periods remain after it is deposited.
01
Lock the payment stream
$300.00 × 36 payments
The periodic payment and the number of periods determine how much cash enters the annuity stream.
02
Apply the per-period growth rate
0.75% per period
The growth factor compounds each payment from its deposit date through the end of the horizon.
03
Read the ending balance
Annuity-due deposits land one period earlier, so they grow slightly more than ordinary-annuity deposits.
$12,345.81 future value