What is the compound interest formula?

Future value equals principal multiplied by one plus the periodic rate raised to the number of compounding periods.

Compound Interest Formula

Compound interest grows by adding earned interest back into the balance, so future interest is calculated on a larger amount.

Core formula

FV = P * (1 + r / n) ^ (n * t)

P is principal, r is annual rate, n is compounding periods per year, and t is years.

Answer summary

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