Money & Finance

Biweekly Mortgage Calculator

Compare a standard monthly mortgage schedule with an accelerated biweekly payment approach.

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Biweekly Mortgage Calculator

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Mortgage Payments & Amortization

Mortgage payment formulas, amortization schedules, extra principal and worked loan-payment scenarios.

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How to use this biweekly mortgage calculator

Enter the values requested above and select Calculate. Change any input to compare another scenario. The calculation runs locally in your browser and does not require an account.

Formula and method

A common accelerated plan pays half the monthly payment every two weeks, producing 26 half-payments—or 13 full monthly payments—per year.

Example

If the normal payment is $1,800, a biweekly plan uses $900 every two weeks, which totals $23,400 per year instead of $21,600.

What this calculator is useful for

Compare a standard monthly mortgage schedule with an accelerated biweekly payment approach. The result is intended for quick estimates, checking arithmetic and comparing scenarios. When a result affects a contract, tax filing, medical decision, building-code requirement or other high-stakes situation, verify the result with the appropriate professional or authoritative source.

Why 26 half-payments make a difference

A biweekly schedule with 26 payments of half the regular monthly payment is equivalent to 13 standard monthly payments each year, rather than 12. Compare the payoff time and interest against monthly payments on a $280,000 mortgage at 5.75%.

What to check: Ask your lender whether it applies each half-payment as received or holds funds until a full payment is available. Escrow, service fees, prepayment rules, and the timing of principal application affect real savings.

Compare with the Mortgage Payoff calculator when that better matches the question you are trying to answer.

Frequently asked questions

What does the Biweekly Mortgage Calculator calculate?

Compare a standard monthly mortgage schedule with an accelerated biweekly payment approach.

How does the Biweekly Mortgage Calculator work?

A common accelerated plan pays half the monthly payment every two weeks, producing 26 half-payments—or 13 full monthly payments—per year.

Is the Biweekly Mortgage Calculator free to use?

Yes. ERICH Calculators is free to use and does not require an account.

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Method, assumptions & corrections

See how formulas, sources and limitations are handled across ERICH Calculators.