Lump sum amount invested today.
Expected annual return on investment.
Investment time horizon.
Regular yearly contributions (0 = lump sum only).
Future Value
$21,589.25
Total Invested
$10,000.00
Total Growth
$11,589.25
Money Multiplier
2.16
Estimate only — not financial advice; lender terms, fees, and taxes vary. Read the full disclaimer ↓
How the balance builds each year. Contributions/Invested is the total you have put in by that year; Value is what it has grown to, including compounding.
| Year | Contributions/Invested | Value |
|---|---|---|
| Year 1 | $10,000 | $10,800 |
| Year 2 | $10,000 | $11,664 |
| Year 3 | $10,000 | $12,597 |
| Year 4 | $10,000 | $13,605 |
| Year 5 | $10,000 | $14,693 |
| Year 6 | $10,000 | $15,869 |
| Year 7 | $10,000 | $17,138 |
| Year 8 | $10,000 | $18,509 |
| Year 9 | $10,000 | $19,990 |
| Year 10 | $10,000 | $21,589 |
Lump sum future value: FV = PV × (1+r)^t.
$10,000 lump sum at 8% for 10 years.
Present Value
$10,000
Annual Rate
8%
Years
10
Future Value
$21,589.25
Total Growth
$11,589.25
Money Multiplier
2.16×
$10,000 at 8% annual return doubles in about 9 years (Rule of 72: 72÷8=9) — you’d have $21,589 after 10 years.
Future value is what an amount of money will be worth at a later date once it has earned a return. It turns a present sum into a projected total, given a rate and a time horizon.
The idea rests on the time value of money: a dollar today can be invested to become more than a dollar tomorrow. Future value puts a number on that growth so you can plan around it.
This calculator models two things at once. A lump sum is an amount you invest today that compounds for the entire period. Regular contributions are equal amounts you add each year, treated here as end-of-year payments.
You can use either piece on its own or combine them. A starting balance with no contributions shows pure lump-sum growth, while a starting balance of zero with yearly payments shows how steady saving alone can accumulate.
Two levers drive future value: the rate of return and the length of time. The rate sets how fast the balance grows each period, and because growth compounds, even modest differences in rate widen the gap over many years.
Time is the quieter but more powerful lever. The longer money stays invested, the more each year of growth is calculated on a larger base. This is why starting early often matters more than the exact rate you earn.
The table on this page breaks the projection into yearly steps. One column tracks the total you have put in, and the other tracks what the balance has grown to, so the difference between them is the compounding effect.
Watching the two columns separate over time makes the math concrete. Early on they sit close together; later, the value column pulls well ahead as returns build on prior returns.
The result here is a nominal figure, meaning it is not adjusted for inflation. A large number decades from now will not buy as much as the same number today, because prices tend to rise over time.
To think in real terms, you can use a lower rate that reflects returns after inflation, or simply keep in mind that future purchasing power is lower than the headline total suggests. This keeps long-range plans grounded.
Future value helps with retirement planning, saving toward a goal, and comparing investment options on equal footing. It answers practical questions like how much a balance might grow or whether a savings rate is on track.
It is also a building block for other calculations. Concepts such as present value and compound interest are the same idea viewed from different angles, so understanding future value makes those easier to follow.
The projection assumes a single, constant rate and annual compounding, while real returns move up and down and accounts may compound monthly. Treat the output as a smooth estimate, not a prediction of any particular year.
It also leaves out taxes, fees, and inflation unless you adjust the rate yourself. Testing a range of rates, rather than relying on one, gives a more honest picture of the possible outcomes.
Divide 72 by your annual rate to estimate how long money takes to double. At 8% return, money doubles in about 9 years (72 / 8 = 9). At 6% it takes roughly 12 years. It is a quick mental shortcut, most accurate for rates in the mid single digits.
Present value is what money is worth today; future value is what it grows to later. The future value formula answers a forward-looking question: if I invest a certain amount today, and perhaps add to it each year, at a given rate for a given time, how much will I have at the end?
Yes. The present value field grows as a single lump sum, while the optional annual payment field is treated as a recurring end-of-year contribution. The result adds both pieces together, so you can model a starting balance, ongoing savings, or a combination of the two.
A lump sum is a single amount invested once that compounds for the whole period. An annuity is a series of equal payments made over time, here once per year. Because later contributions have fewer years to grow, a stream of payments usually finishes lower than the same total invested upfront.
Future value grows exponentially, not in a straight line, because each year’s growth is calculated on a larger balance. Over long periods even one extra percentage point compounds on itself repeatedly, which is why the gap between, say, 6% and 8% widens dramatically the further out you look.
No. The figure shown is a nominal amount, meaning it is not adjusted for rising prices. To estimate what the result is worth in today’s purchasing power, you can use a lower, inflation-adjusted rate or compare the nominal total against expected inflation separately.
There is no single correct number, since real returns vary year to year and are never guaranteed. Many people use a conservative long-run estimate for diversified investments and then test a range of rates to see how sensitive the outcome is. Lower assumptions give a more cautious plan.
This calculator assumes end-of-year contributions, so each payment misses a year of growth compared with paying at the start of the year. It also uses annual compounding. Real accounts that contribute monthly or compound more often will grow somewhat faster than the annual figure shown here.
Figures on this page are checked against primary, authoritative sources. Links open in a new tab.
Investment disclaimer
Returns are assumptions, not guarantees. Actual results may vary because of market performance, taxes, fees, inflation, and timing. This is an educational projection, not investment advice.
Built and maintained by Calculator Matters, an independent calculator project. Method checked against published formulas and primary sources · Last reviewed 3 June 2026 · How we calculate · Found an error? corrections@calculatormatters.com