Simple Interest Calculator
Simple interest is calculated only on your original amount — no compounding. Enter the principal, rate and time to see the interest and final total.
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Final amount
$0
Principal
$0
Interest earned
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Interest
Show year-by-year breakdown
| Period | Added | Interest | Balance |
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How simple interest works
Simple interest is charged or earned only on the original principal, never on accumulated interest. It’s common on short-term loans, car loans and some bonds. The formula is straightforward and linear.