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Finance · Investing

Future Value Calculator

Find out what a lump sum plus regular contributions will be worth in the future at a given rate of return. Drag the sliders and the numbers update instantly.

$10,000
$200
6.0%
15 yr
Future value
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Total invested
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Total growth
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Growth multiple
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Invested vs growth over time

What is future value?

Flat illustration of a small coin growing into a taller stack with a forward-pointing arrow — representing money invested today growing into a larger future value.
Money invested earlier compounds longer, so early contributions do the most work.

Future value (FV) is what a sum of money invested today will be worth at a later date once it earns a rate of return. It answers the core planning question: if I invest this amount and add to it regularly, how much will I have when I need it? The core formula for a lump sum is FV = PV × (1 + r)n, extended here to include recurring contributions.

Lump sum plus contributions

This calculator combines two engines: it grows your initial lump sum and separately grows each monthly contribution from the day it's added. Money invested earlier compounds longer, so the first few years of contributions often end up contributing the most to your final balance.

Tip: Compare future value against present value to decide whether to take money now or later — the right discount or growth rate is the deciding factor.

Why the rate assumption matters

Future value is only as reliable as the return you assume. Historically the S&P 500 has returned roughly 10% before inflation and about 7% after, while bonds and cash return less. Running the calculator at a few different rates shows you a realistic range.

Frequently asked questions

What is the future value formula?
For a lump sum, FV = PV × (1 + r)ⁿ, where PV is the present value, r is the periodic rate, and n is the number of periods. With regular contributions, the future value of those payments is added on top.
How is future value different from present value?
Future value tells you what money invested today will be worth later. Present value does the reverse — it discounts a future amount back to what it's worth today. Both rely on an assumed rate of return.
What rate of return should I use?
Use a rate that matches your investment mix. Around 7% (after inflation) is a common assumption for a diversified stock portfolio, while savings and bonds are lower. Try several rates to see a realistic range.
Does future value account for inflation?
This calculator shows nominal future value. To see purchasing power, use an inflation-adjusted (real) rate of return — for example, subtract expected inflation from your nominal rate before entering it.
How often does this calculator compound?
Contributions compound monthly in this tool, which matches how most investment and savings accounts credit growth. Monthly compounding produces a slightly higher result than annual compounding at the same rate.

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Written & reviewed by Chase Bennett, President of CalcHeadquarters
Every calculator is built from published formulas and authoritative sources, then independently checked for accuracy before it goes live. Last updated July 2026. Read our editorial policy & methodology.