Mortgage Payoff Calculator

See how much interest you can save and how quickly you can pay off your mortgage with extra payments or biweekly payments.

Known Remaining Term I know my remaining loan term
Unknown Remaining Term I only know my balance & payment
Current Loan Details
Payoff Strategy
Added to your regular monthly payment
One additional payment per year
Applied immediately to principal
Pay half your monthly payment every 2 weeks (26 payments = 13 monthly payments/year)
Total Interest Savings
$45,230
Pay off 5 years 3 months earlier!
Metric Original Plan New Plan Difference
Payoff Date Jan 2054 Oct 2048 5y 3m sooner
Monthly Payment $1,896 $2,096 +$200
Total Payments $682,633 $547,403 -$135,230
Total Interest $382,633 $247,403 -$135,230
Remaining Payments 336 273 63 fewer

Interest Comparison

Balance Over Time

Amortization Schedule (With Extra Payments)

Year Principal Paid Interest Paid Extra Paid End Balance
Current Loan Info
Your current remaining balance
Principal & interest only (exclude taxes/insurance)
Payoff Strategy
Total Interest Savings
$45,230
Pay off 5 years 3 months earlier!
Metric Original Plan New Plan Difference

Interest Comparison

Balance Over Time

How Mortgage Payoff Works

Every mortgage payment consists of two parts: principal (the amount borrowed) and interest (the cost of borrowing). In the early years of a mortgage, the majority of each payment goes toward interest. As the loan matures, more of each payment is applied to principal.

Making extra payments allows you to pay down principal faster, which reduces the amount of interest charged on future payments. This creates a snowball effect: as your balance decreases faster, you save even more on interest.

Principal and Interest Breakdown

Consider a $300,000 mortgage at 6.5% for 30 years. The monthly payment is $1,896. In the first month:

  • Interest: $300,000 x (6.5% / 12) = $1,625
  • Principal: $1,896 - $1,625 = $271

That's 85% going to interest! But by year 15, the split is closer to 50/50, and by year 25, about 80% goes to principal.

Extra Payment Strategies

1. Extra Monthly Payments

Adding even a small amount to each monthly payment can have a dramatic effect:

Extra/Month Interest Saved Time Saved
$100 $62,840 5.5 years
$200 $102,660 9 years
$300 $130,485 11.5 years
$500 $165,890 15 years

Based on $300,000 loan at 6.5% for 30 years

2. Biweekly Payments

Instead of 12 monthly payments, you make 26 half-payments (every two weeks). This equals 13 full monthly payments per year - one extra payment without feeling the pinch.

Biweekly Benefits: On a $300,000 mortgage at 6.5%, biweekly payments save approximately $76,000 in interest and pay off the loan 5 years early - without changing your monthly budget significantly.

3. Yearly Lump Sum

Using your tax refund, bonus, or other windfall to make an annual extra payment can accelerate your payoff. A $3,000 yearly payment on the same mortgage saves over $100,000 in interest.

4. One-Time Principal Payment

Received an inheritance or large sum? Applying it to your mortgage immediately reduces your balance and saves interest for the remaining term.

Refinancing vs. Extra Payments

When interest rates drop, you might wonder whether to refinance or simply make extra payments. Consider:

Factor Refinancing Extra Payments
Upfront Costs 2-5% of loan (closing costs) None
Rate Reduction Yes - new lower rate No - keeps current rate
Flexibility New fixed payment Pay extra when you can
Best When Rates drop 0.75%+ and you'll stay 5+ years You have extra cash flow

Prepayment Penalties

Some mortgages include prepayment penalties that charge you for paying off the loan early. Before making extra payments:

  • Check your loan documents for prepayment penalty clauses
  • Most penalties expire after 3-5 years
  • FHA and VA loans typically don't have prepayment penalties
  • Penalties are often 2-6 months of interest
Important: Even with a prepayment penalty, paying off your mortgage early often still saves money. Calculate the penalty vs. interest savings to make the right decision.

Opportunity Cost Consideration

Before aggressively paying down your mortgage, consider whether your money could work harder elsewhere:

When Extra Payments Make Sense:

  • Your mortgage rate is higher than investment returns (6%+ in most markets)
  • You value the peace of mind of being debt-free
  • You have no higher-interest debt (credit cards, personal loans)
  • Your emergency fund is fully funded (3-6 months expenses)
  • You're maximizing employer 401(k) match

When Investing May Be Better:

  • Your mortgage rate is low (under 4-5%)
  • You expect higher investment returns (historically 7-10% in stocks)
  • You have decades until retirement
  • You value liquidity (investments can be sold; home equity requires refinancing)

Real-World Examples

Example 1: Christine's Extra $200/Month

Christine has a $250,000 mortgage at 6% for 30 years. She decides to pay an extra $200 per month.

  • Original payoff: 30 years, $289,595 total interest
  • With $200 extra: 21 years, $181,420 total interest
  • Savings: $108,175 and 9 years earlier

Example 2: Bob's Biweekly Strategy

Bob switches his $350,000 mortgage (7%, 30 years) to biweekly payments.

  • Original payoff: 30 years, $488,281 total interest
  • With biweekly: 25 years, $380,442 total interest
  • Savings: $107,839 and 5 years earlier

Example 3: Charles' Inheritance

Charles receives $50,000 inheritance 5 years into his $200,000 mortgage (5.5%, 30 years).

  • Without lump sum: 25 years remaining, $156,017 remaining interest
  • With $50,000 applied: 16 years remaining, $73,845 remaining interest
  • Savings: $82,172 and 9 years earlier
All Calculators