Present value calculator: discount a future sum or stream of payments to today's value using your own interest rate. Free, private, editable rates, no signup.
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Every figure above is calculated locally in your browser from the assumptions shown. No inputs are sent anywhere. See the methodology section below for the formulas used.
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Present value calculator: discount a future sum or stream of payments to today's value using your own interest rate. Free, private, editable rates, no signup.
Monthly compounding discounts the same 25,000 dollars to 18,534.30 today.
Transparent methodology
How this calculator works
Reviewed August 2026 · BoringToolsKit Editorial Team
BoringToolsKit. “Present Value Calculator.” boringtoolskit.com/present-value-calculator/ (reviewed August 2026). Free to reference in articles, syllabi, and answer posts with a link.
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Worked example: 25,000 dollars five years out
Suppose a contract pays you a single 25,000 dollar settlement in 5 years, and you discount it at 6 percent compounded monthly. The monthly rate is 0.06 / 12 = 0.005, and the number of compounding periods is 12 x 5 = 60. The growth factor is 1.005 to the 60th power, which equals 1.348850.
Present value is therefore 25,000 / 1.348850 = 18,534.30 dollars, and the discount is 25,000 - 18,534.30 = 6,465.70 dollars. In other words, an investor who can earn 6 percent would need only 18,534.30 dollars today to end up with the same 25,000 dollars.
Compounding frequency matters even at the same nominal rate. Switch the same 25,000 dollar example to annual compounding and the divisor becomes 1.06 to the 5th = 1.338226, giving a present value of 18,681.45 dollars. Monthly compounding makes the future dollar arrive 'cheaper' by 147.15 dollars because interest accrues more often along the way.
Where a single discount rate breaks down
The formula assumes one flat rate for the entire horizon, but real markets use a yield curve. At the start of 2026, 1-year Treasury yields sat near 3.6 percent while 10-year yields were closer to 4.1 percent, so discounting a payment 10 years out at the 1-year rate overstates its present value. A 25,000 dollar payment due in 10 years at a flat 3.6 percent is worth 17,472 dollars; at 4.1 percent it is worth 16,765 dollars, a 707 dollar gap on identical cash flow.
It also ignores risk and liquidity. A promised payment from a shaky counterparty is not risk-free, so pricing it with a Treasury rate is flattering; distressed receivables trade far below their computed present value for exactly this reason. Inflation is a separate wedge: at 2.5 percent inflation, the 18,534 dollar figure from the example above corresponds to roughly 16,300 dollars of purchasing power in today's goods, so treat the output as a nominal-dollar estimate, not a real one.
