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Biweekly Mortgage Calculator: Save on Interest

Written by Calcida Team
Reviewed for accuracy and clarity
Last updated: April 2026

Compare biweekly vs monthly mortgage payments. See how making a payment every two weeks can shorten your loan term and save you thousands in interest.

This calculator is useful for borrowers deciding between monthly and biweekly mortgage payments. You will typically enter Loan amount, Interest rate, Loan term, Payment frequency.

The result represents payoff time and interest savings for biweekly vs. monthly. If you are browsing similar tools, start with Mortgage Calculators or view the full calculators directory.

Also useful: Mortgage Payment Calculator with Taxes and Insurance, Mortgage Amortization Calculator & Schedule.

Enter purchase price before closing costs.

20% down avoids PMI in many cases.

Shorter terms increase payment but cut total interest.

Taxes & Fees

If percent, we estimate based on home price.

Biweekly means 26 payments per year.

Estimated Bi-Weekly Payment

$1,261
Standard Monthly: $2,523
You save $93,073 in interest!
You will pay off your mortgage 30 years and 0 months sooner.

Payment Breakdown

Detailed Costs (Monthly Avg)

Principal & Interest$2,023
Property Tax$400
Home Insurance$100
HOA Fees$0
Total Monthly$2,523

Key Insights

  • Over the life of this 30-year loan, you will pay a total of $408,142 in interest.
  • Your loan-to-value (LTV) ratio is 80.0%. Great job! With a down payment of 20% or more, you avoid PMI costs.
  • By paying bi-weekly, you are effectively making 13 full payments per year instead of 12, which accelerates your payoff.

Compare biweekly vs extra payments

Understand which strategy saves you the most.

Extra Payment Calc →
AmortizationRefinance Check

How This Calculator Works

By paying biweekly, you effectively make 13 full payments a year instead of 12. This extra payment goes directly toward the principal, saving you interest and shortening your loan term.

Formula

Biweekly payments = (Monthly payment × 12) / 26
Where:
  • Monthly payment = standard monthly amortized payment
Biweekly schedules usually create one extra monthly payment per year, reducing interest and payoff time.

Example Calculation

Monthly payment$1,800
Biweekly payment
≈ $831
This is equivalent to making 13 monthly payments per year.

Why Biweekly Mortgage Payments Work

Paying biweekly means you pay half of 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 monthly payments.

Frequently Asked Questions

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