Calculated result
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Simple interest formula
Interest = principal × annual rate × time. Ending amount = principal + interest.
Example: $10,000 at 5% simple interest for 3 years produces $1,500 in interest and a $11,500 ending amount.
No compounding
Simple interest is calculated only on the starting principal. It does not earn interest on prior interest and does not model payment timing, fees, taxes, or a changing rate.
Limits and interpretation
Time may include decimal years. Confirm the time convention and rate basis in any real agreement; actual products may use different day-count, payment, fee, or rounding rules.
This is a general mathematical estimate, not financial advice or an offer of credit or investment return.