Compound Interest Calculator
Find out how much your savings will grow over time with compound interest and regular monthly contributions.
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Formula: A = P(1 + r/n)nt + PMT × {[(1 + r/n)nt - 1] / (r/n)}
Where P = Principal, r = annual interest rate, n = compounds per year, t = years, PMT = monthly payment.
Where P = Principal, r = annual interest rate, n = compounds per year, t = years, PMT = monthly payment.
What is Compound Interest?
Compound interest is the addition of interest to the principal sum of a loan or deposit, or in other words, interest on interest. It is the result of reinvesting interest, rather than paying it out, so that interest in the next period is then earned on the principal sum plus previously accumulated interest.
How to Maximize Compound Interest
- Start Early: Time is the most critical variable. The longer your money has to compound, the more it will grow.
- Contribute Regularly: Adding small amounts monthly increases your total principal faster, scaling your interest earnings.
- Leave it Alone: Resist the urge to withdraw funds early. Let the exponential math work its magic over decades.
Future Value
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Total Contributions
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Total Interest Earned
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