Updated July 20, 2026 ยท US & Canada ยท 100% Free

2026 Simple Interest vs Amortized Loan Calculator: Compare Costs

Compare simple interest and fully amortized auto loans side-by-side. See how much more interest you pay with simple interest loans, especially if you pay late or make partial payments.

Advertisement ยท VehCalc may earn a commission

Simple interest loans calculate interest based on the current outstanding principal balance each day, while amortized loans use a fixed monthly payment that includes both principal and interest. The key difference is that with simple interest, paying late means you pay more interest that month, and partial payments go to interest first. Amortized loans provide predictable monthly payments. Most auto loans today use simple interest, but understanding the difference can save you money.

Loan Details

Total amount being financed.
Interest rate for both loan types.
Loan duration for both loan types.
Late payments increase interest cost on simple interest loans.

Comparison Results

Simple Interest
$0
Total Interest
Amortized
$0
Total Interest
Simple Interest Payment
$0
Amortized Payment
$0
Interest Difference
+$0
Extra interest paid with simple interest due to late payments
Key Differences
Interest Calculation:Daily vs Monthly
Late Payment Impact:Higher interest
Payment Priority:Interest first
Advertisement

๐Ÿ” Compare related calculators on VehCalc โ†’