Financial Mathematics

Simple Interest Calculator (US)

Instantly compute linear simple interest and total payoff for loans, promissory notes, and short-term debt.

Total Repayment / Future Value -
$10,000
$
7.5%
%
3 Years
Yrs
Total Repayment (Principal + Interest)
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Principal: - | Interest: -
Principal
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Simple Interest
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Total Future Amount

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Total Simple Interest

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Monthly Interest

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Linear Interest Accrual Curve

Total Repayment Balance vs Principal

Year-by-Year Simple Interest Schedule

Year Opening Principal Annual Interest Cumulative Interest Total Balance