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Simple Interest Calculator
Calculate flat linear interest charges, loan payoff amounts, and bond coupon earnings with the classic I = P × r × t formula.
Parameters
$10,000
$
5.0%
5 Years
Annual Accrual:$500/yr
Simple interest remains constant every single year (I = P × r × t) without exponential acceleration.
Principal
$10,000
Interest
$2,500
Total Payoff
$12,500
Principal: 80.0%Interest: 20.0%
Linear Trajectory
Simple BalancePrincipal
Year 5
Simple Balance:$12,500
Principal:$10,000
Interest:$2,500
Compounded Eq:$12,763
Annual Schedule Breakdown
Year-by-year linear interest accumulation compared with compounding benchmarks.
Values in $5 Years Horizon
| Yr | Ending Balance | Total Interest |
|---|
5-Step Educational Guide
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Frequently Asked Questions
Common questions about simple interest, rates, and linear growth.
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