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Mortgage Payoff Calculator

This mortgage payoff calculator helps evaluate how adding extra payments or bi-weekly payments can save on interest and shorten mortgage term.

If you know the remaining loan term

Use this calculator if the term length of the remaining loan is known and there is information on the original loan – good for new loans or preexisting loans that have never been supplemented with any external payments.

Original loan amount
Original loan term years
Interest rate %
Remaining term years
months
Repayment options:
per month
per year
one time
Payoff in 17 years and 3 months

The remaining balance is $372,217.43. By paying extra $500.00 per month starting now, the loan will be paid off in 17 years and 3 months. It is 7 years and 9 months earlier. This results in savings of $122,306 in interest.

Interest savings
$122,306
Original: $463,353
With payoff: $341,047
Pay 26% less on interest
Time savings
7 years and 9 months
Original: 25 yrs
With payoff: 17 yrs, 3 mos
Payoff 31% faster
Original With payoff
Monthly pay $2,398.20 $2,898.20
Total payments $863,352.76 $741,046.55
Total interest $463,352.76 $341,046.55
Remaining payments $719,460.63 $597,154.42
Remaining interest $347,243.20 $224,937.00
Payoff in 25 yrs 17 yrs, 3 mos
View Amortization Table

If you don't know the remaining loan term

Use this calculator if the term length of the remaining loan is not known. The unpaid principal balance, interest rate, and monthly payment values can be found in the monthly or quarterly mortgage statement.

Unpaid principal balance
Monthly payment
Interest rate %
Repayment options:
per month
per year
one time
Payoff in 14 years and 4 months

The remaining term of the loan is 24 years and 4 months. By paying extra $500.00 per month starting now, the loan will be paid off in 14 years and 4 months. It is 10 years earlier. This results in savings of $94,554.73 in interest.

Interest savings
$94,555
Original: $207,677
With payoff: $113,123
Pay 46% less on interest
Time savings
10 years
Original: 24 yrs, 4 mos
With payoff: 14 yrs, 4 mos
Payoff 41% faster
Original With payoff
Remaining term 24 yrs, 4 mos 14 yrs, 4 mos
Total payments $437,677.36 $343,122.63
Total interest $207,677.36 $113,122.63
View Amortization Table

Fraction Arithmetic & Co-Borrower Equity Solver

Calculate exact fraction addition, subtraction, multiplication, and division for co-borrower equity shares, down-payment ratios, and split mortgage ownership.

Fraction Result: 5/6
Decimal Result: 0.8333
(1×3 + 1×2) / (2×3) = 5/6 (≈ 0.8333)

How Accelerating Your Mortgage Payoff Saves Thousands

When you finance real estate through a conventional fixed-rate mortgage, payments in the opening years are heavily front-loaded with interest charges. Because monthly compounding applies to your remaining outstanding loan balance, chipping away at principal early eliminates the compounded finance charge over the entire remaining term.

Biweekly vs. Extra Monthly Mortgage Payments

There are two primary methods homeowners leverage to accelerate amortization: dedicated extra monthly principal installments and biweekly payment schedules. In a true biweekly program, you remit half your monthly payment every two weeks. With 52 weeks in a calendar year, you complete 26 half-payments, which equates to 13 full monthly payments annually—painlessly retiring 4 to 6 years off a 30-year amortization schedule.

Frequently Asked Questions (FAQ)

Every additional dollar sent above your required principal-and-interest installment directly reduces your unpaid loan principal balance. Because mortgage interest is calculated monthly on the remaining balance, a smaller principal immediately suppresses future accrued interest charges, enabling subsequent payments to pay down debt even faster.
A standard monthly schedule consists of 12 payments per year. A biweekly mortgage schedule divides your monthly payment in half and pays every two weeks, resulting in 26 half-payments (equivalent to 13 full payments per year). That extra full payment per year can shorten a 30-year mortgage by 4 to 6 years without feeling burdensome.
Yes. Always verify with your mortgage servicer that extra payments are credited directly toward the principal balance rather than applied toward next month's scheduled installment or held in an unallocated escrow suspense account.