Whether you're thinking about paying off a car loan, personal loan, or student loan early, you need to know your exact payoff amount. This guide covers the formulas, the gotchas, and the tools to calculate it accurately.
Your loan balance is the amount of principal you still owe as of your last statement date. But interest accrues daily between payments. The payoff amount includes:
Remaining principal — what you still owe on the loan itself.
Accrued interest — interest that has accumulated since your last payment.
Fees — any prepayment penalties or payoff processing fees (not all loans have these).
So if your balance is $15,000 and you're 20 days past your last payment at 8% APR, your payoff amount is $15,000 + $66 in accrued interest = $15,066. This is why your payoff quote is always slightly higher than your statement balance.
Loan: $18,500 remaining balance
Rate: 6.5% APR
Last payment: 15 days ago
Prepayment penalty: None
Daily interest: ($18,500 × 0.065) ÷ 365 = $3.29/day
Accrued interest: $3.29 × 15 days = $49.36
Payoff amount: $18,500 + $49.36 = $18,549.36
If you wait another 10 days, add $32.90 more. Pay off promptly to minimize interest.
To calculate interest savings from early payoff, find the total you'd pay by continuing monthly payments, then subtract the payoff amount:
| Loan Type | Remaining Balance | Months Left | Total If You Continue | Interest Saved |
|---|---|---|---|---|
| Personal Loan | $8,000 | 24 | $9,200 | $1,200 |
| Auto Loan | $15,000 | 36 | $17,600 | $2,600 |
| Student Loan | $25,000 | 60 | $30,500 | $5,500 |
| Mortgage | $250,000 | 240 | $430,000 | $180,000 |
Estimated savings. Actual amounts depend on your rate and payment.
Most installment loans use amortization — each payment covers accrued interest plus some principal. Early in the loan, most of your payment goes to interest. Later, most goes to principal.
An amortization schedule breaks down every payment showing exactly how much goes to interest vs. principal. This helps you see how much interest remains and what an early payoff saves.
Mortgages: Rarely have prepayment penalties. Payoff quotes are standard and lenders are used to providing them.
Auto loans: Check for precomputed interest (where total interest is front-loaded). Most modern auto loans use simple interest, making early payoff beneficial.
Personal loans: Some charge a prepayment penalty of 1-5% of the payoff amount. Read your loan agreement carefully.
Student loans: No prepayment penalties on federal or private student loans. Any extra payment reduces principal immediately.
Call your lender or log into your account portal. Request a 'payoff quote' or 'payoff statement.' This shows the exact amount needed to pay off your loan as of a specific date, including accrued interest and fees.
No. Your balance doesn't include interest accrued since your last payment. The payoff amount is your balance plus accrued interest and any fees.
Multiply your principal by your annual rate, then divide by 365 (or 360 for some loans). That gives daily interest. Multiply by days since your last payment.
Most personal and auto loans can be paid off early. Check for prepayment penalties in your loan agreement. Mortgages rarely have penalties, but some auto and personal loans do.
Yes, unless there's a prepayment penalty. You save all remaining interest. On a $20,000 loan at 10% with 3 years left, paying it off now saves roughly $3,000 in interest.