Introduction
Paying off a loan early can save you a lot of money in interest. This early payoff calculator shows you exactly how much you save when you make extra payments on your mortgage, auto loan, student loan, or personal loan. Just enter your remaining balance, interest rate, and loan term, then add the extra amount you want to pay each month, each year, or as a one-time lump sum.
The calculator builds two full amortization schedules side by side — one with your normal payments and one with your extra payments. You will see how much interest you save, how many months you cut off your loan, and your new payoff date. It also supports bi-weekly payments, which add one full extra payment per year automatically. Use the results to decide the best way to become debt-free faster.
How to Use Our Early Payoff Calculator
Enter your loan details and any extra payments you plan to make. The calculator will show you how much interest you save, how many months you cut off your loan, and your new payoff date.
Loan Type: Pick the type of loan you have — mortgage, auto, student, or personal. This fills in common starting values, but you can change them.
Remaining Balance: Enter the amount you still owe on your loan right now. This is not the original loan amount — it is what is left to pay.
Annual Interest Rate: Enter your loan's yearly interest rate as a percentage. You can find this on your loan statement. Type the number only — the percent sign is already there. If you are unsure of the difference between your note rate and APR, our APR calculator can help clarify.
Remaining Term: Enter how many years and months are left on your loan. For example, if you have 5 years left, type 5 in the years box and 0 in the months box.
Monthly Payment: This is your regular monthly principal and interest payment. By default, the calculator figures this out for you. Turn off the auto-calculate switch if you want to type in your own exact payment amount.
Bi-Weekly Payment Mode: Turn this on if you want to pay half your monthly payment every two weeks instead of once a month. This adds up to one full extra payment each year. For mortgage-specific bi-weekly analysis, see our biweekly mortgage calculator.
Extra Monthly Payment: Enter any extra money you plan to add to your payment each month. This amount goes straight toward your loan balance.
Extra Annual Payment: Enter a lump sum you want to pay once a year, like a tax refund or work bonus. Use the dropdown to pick which month you will make this payment.
One-Time Extra Payment: Enter a single extra payment you want to make just once. Then type the month number from now when you plan to pay it. For example, type 6 if you will pay it six months from today.
Click Calculate to see your results. The calculator updates automatically as you change any input. Click Reset to go back to the default values. You can also open the full amortization schedule at the bottom to see a month-by-month breakdown of both your standard and accelerated payoff plans.
What Is an Early Payoff Calculator?
An early payoff calculator shows you how much time and money you can save by paying extra on a loan. When you make your normal monthly payment, part of it goes toward interest (the fee the lender charges you) and part goes toward the principal (the actual amount you owe). Any extra money you pay goes straight to the principal, which shrinks your balance faster. A smaller balance means less interest builds up each month, so you save money and finish paying off your loan sooner. You can explore exactly how interest and principal split each month using our amortization calculator.
How Extra Payments Save You Money
Interest on most loans is calculated on your remaining balance. The higher your balance, the more interest you pay each month. When you add extra payments — even small ones — your balance drops faster. That means every future month charges you less interest. Over time, this adds up to big savings. For example, adding just $100 a month to a 30-year mortgage can cut years off your loan and save you tens of thousands of dollars in interest. Our mortgage extra payment calculator lets you see this effect in detail for home loans specifically.
Types of Extra Payments
There are several ways to pay extra on a loan:
- Extra monthly payments — A fixed extra amount you add every single month on top of your regular payment.
- Extra annual payments — A lump sum you pay once a year, such as a tax refund or work bonus.
- One-time payments — A single large payment applied at a specific point during the loan, like money from selling something or receiving a gift.
- Bi-weekly payments — Instead of paying once a month, you pay half your monthly payment every two weeks. Since there are 52 weeks in a year, you end up making 26 half-payments, which equals 13 full payments instead of 12. That one extra payment each year goes directly to your principal.
Why Paying Off a Loan Early Matters
Debt costs you money every day it exists. The longer you carry a loan, the more interest you pay the lender. Paying off a loan early means you keep more of your money. It also frees up your monthly budget sooner, giving you cash you can save, invest, or spend on other goals. If you are juggling multiple debts, a debt snowball calculator or debt avalanche calculator can help you decide which loan to target first. Even if you can only afford a small extra payment each month, it makes a real difference over the life of the loan.
Things to Check Before Paying Extra
Before you start making extra payments, check your loan agreement for a prepayment penalty. Some lenders charge a fee if you pay off the loan too early. Most modern mortgages, auto loans, student loans, and personal loans do not have this penalty, but it is always smart to confirm. Also, make sure your lender applies extra payments to principal and not to future payments. You may need to tell them directly how to apply the extra money. If your interest rate is especially high, you might also want to explore whether refinancing or debt consolidation could lower your rate before you start accelerating payments.