Finance
Loan and amortization calculator
Works for auto, personal, and other fixed-rate installment loans. Add extra principal to see how many months and how much interest you cut.
Results
Enter values to see results.
How this calculator works
Scheduled payment uses monthly compounding: interest each month is balance times rate/12. Extra principal is applied after that interest and reduces the balance faster. The table lists the first twelve payments plus the final payment after extra principal.
Estimate only. Fees, compounding conventions, and prepayment penalties are not modeled. Not financial advice.