Find what today’s balance and a stream of monthly deposits could become. Future value is a mathematical estimate at a specified future date. It is useful for a savings goal, reserve or investment scenario, but it does not tell you what that future money will buy.
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Before you enter your numbers
Present value means the amount already available today. Monthly contributions are assumed to arrive at the end of each month. The annual input is a nominal rate divided into 12 monthly periods; an effective annual yield or APY requires conversion before it is used on this basis.
- Present value
- Annual interest or return rate
- Years
- Monthly contribution
Input reference
- Present value: The initial principal available at the start. Recurring deposits, if supported on this page, are entered separately. Do not multiply the principal by the number of years; the formula applies growth over the chosen term.
- Annual interest rate: An assumed nominal annual rate, divided by 12 in monthly projections. It is held constant. It is not a guaranteed yield, and the default should be replaced with an assumption suited to your scenario.
- Years: The duration of the calculation in years. Longer periods give growth or withdrawals more time to operate. This is a chosen modeling horizon, not a prediction of an investment term or your lifetime.
- Monthly contribution: New money added at the end of each month. Convert annual saving to a monthly amount by dividing by 12. This page does not schedule skipped months or one-time deposits automatically.
Formula and calculation method
The starting balance grows by (1 + i)^n. Deposits grow according to the ordinary-annuity factor [(1 + i)^n − 1] / i. Deposits made at the beginning of each month would have an additional month of growth and produce a different result.
Worked example
A single 10,000 balance at a 6% nominal annual rate compounded monthly becomes about 18,194 after ten years, with no added contributions. At zero return, adding 100 monthly instead raises the balance to 22,000 through contributions alone.
How to interpret the result
The result panel reports future value, growth earned and total contributions.
Compare future value with the future cost of the goal. A price quoted today can rise before the purchase date. To express a future balance in today’s purchasing power, divide it by (1 + annual inflation)^years. Do not compare an inflated goal with a real-return projection without reconciling the units.
Future value with and without contributions
With no recurring contribution, future value is the present value multiplied by the compound growth factor over the selected period. When monthly contributions are added, the calculator also values the stream of deposits using an ordinary-annuity formula.
That distinction matters because a 10,000 lump sum invested for ten years is not equivalent to contributing 1,000 at the end of each year. Each deposit has a different amount of time to compound.
Match the deposit date to the formula
A lump sum available now grows for the entire horizon. A deposit in the last month has almost no time to grow. This difference is why multiplying total deposits by a single full-period growth factor overstates the future value of a monthly savings plan.
To model an amount that arrives later, calculate the initial stage first, then add the new money and project the remaining period. This page has no dated lump-sum input. A staged calculation is more faithful than pretending every expected deposit is already available today.
Match the rate and compounding convention to the cash flow
Future value depends on whether the rate is annual, monthly or another periodic rate and on when contributions occur. A mathematically correct formula can still produce the wrong answer if an annual rate is treated as a monthly rate or deposits are assumed at the wrong point in each period.
Use the future value tool for a clean time-value-of-money question. Use the Investment Calculator when regular monthly contributions and a planning-oriented breakdown are more useful.
Use The Result In The Next Calculation
Use future value when you need one amount at a future date. If you also make regular deposits, compare the result with the investment or compound-interest calculator so contribution timing is modeled explicitly.
Retirement planning guides · Calculation methodology
Rules and limits can change. Use these primary sources to verify time-sensitive details.
Future Value Calculator FAQs
Why is my result different from annual compounding?+
This page compounds monthly. Annual compounding uses one interest period per year, so the same stated nominal percentage produces a different effective yield.
Where can I check the assumptions behind this result?+
Check the formula and limitations sections on the Future Value Calculator page for the assumptions specific to this tool. The methodology page explains conventions shared across calculators, and Investor.gov financial tools is the reference for any time-sensitive statutory or product rule mentioned here.
What does the Future Value Calculator result include?+
The result focuses on future value, growth earned and total contributions. It is calculated from the inputs shown on this page rather than from live account, market or government data. Read the formula and limitations section before transferring the result into another planning tool.
What should I change when testing another Future Value Calculator scenario?+
Change one major assumption at a time so you can see what drives the result. Useful inputs to test include Present value, Annual interest or return rate, Years, Monthly contribution. Use a conservative case alongside your central estimate rather than relying on only the most favorable combination.
Can the Future Value Calculator replace an official statement or professional advice?+
No. It is a planning calculator. The result assumes the rate you enter continues consistently. Real investment and interest rates can vary over time. Use official statements and current rules when an exact legal, tax, pension or account figure is required.