Mortgage Payoff Calculator

This calculator compares your current mortgage payoff timeline against extra monthly payments or a biweekly payment schedule, showing exactly how many months sooner you'd finish and how much interest each approach actually saves.

For personal planning only — not financial advice.

Reviewed by CalculatorDrive Finance Editorial Board · Last updated

Find values in your monthly statement.

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Your Payoff Analysis

Enter your mortgage details to see when you'll pay it off and how much you can save.

The short answer

On a $230,000 balance at 6.5% with a $1,500 monthly payment, normal repayment takes 329 months (27.4 years) and costs $262,933.38 in interest. Add $200 extra a month and it drops to 245 months, saving $77,559.84. Switch to biweekly payments instead and it drops to 270 months, saving $55,164.80 — extra payments beat biweekly here, but both beat doing nothing.

Key takeaways

  • $230,000 at 6.5%, $1,500/month: 329 months to payoff, $262,933.38 in total interest at the normal pace.
  • $200/month extra: payoff in 245 months (84 months sooner), saving $77,559.84 in interest.
  • Biweekly payments (13 effective payments/year): payoff in 270 months (59 months sooner), saving $55,164.80.
  • Extra payments shorten the loan and cut interest but do not lower your required monthly payment unless the loan is formally recast.

What $200 a month actually buys you

Normal +$200/month
Payoff time329 months245 months
Total interest$262,933.38$185,373.54

Because the extra $200 applies straight to principal, it shrinks the balance that every future month's interest is calculated on — the savings compound. Over roughly 245 months, $200/month totals about $49,000 in extra payments, but it returns $77,559.84 in interest saved — a better-than-dollar-for-dollar trade, and one with no market risk involved.

Biweekly payments: a quieter version of the same trick

26 half-payments/year = 13 full monthly payments (vs 12 normally)

Payoff: 270 months (vs 329) — 59 months sooner

Interest saved: $55,164.80

Biweekly payment plans work because 52 weeks divided into two-week chunks is 26 payments, not the 24 you'd get by simply halving 12 monthly payments — that extra pair of half-payments equals one additional full payment every year, applied automatically without having to remember it. In this example it saves less than the deliberate $200/month plan, but it requires no ongoing decision once set up, which matters for anyone who wouldn't otherwise stick to manual extra payments.

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Frequently Asked Questions

How do extra mortgage payments save money?

Extra payments apply directly to principal, reducing the balance that accrues interest each month. On a $230,000 balance at 6.5% with a $1,500 payment, adding $200 extra a month cuts the payoff from 329 months to 245 — 84 months (7 years) sooner — and reduces total interest from $262,933.38 to $185,373.54, a savings of $77,559.84.

What are biweekly mortgage payments?

Biweekly payments mean paying half your monthly amount every two weeks, resulting in 26 half-payments a year — equivalent to 13 full monthly payments. On the same $230,000, 6.5%, $1,500/month loan, switching to biweekly cuts the payoff from 329 to 270 months and saves $55,164.80 in interest.

Should I pay off my mortgage early or invest instead?

This depends on your mortgage rate versus expected investment returns, tax situation, and risk tolerance. Paying off a high-rate loan is a guaranteed return; investing may yield more over the long term but carries market risk. This is not personalized financial advice.

Do extra payments reduce my required monthly payment?

No. Extra payments shorten the loan term and reduce total interest but typically do not lower your required monthly payment unless you formally recast or modify the loan with your lender.

Which mode should I use if I already have a mortgage?

Use 'Don't Know Term' if you know your current balance and monthly payment but not how many payments remain. Use 'Know Remaining Term' for new loans or when you have the original amount and full term.

How do I use this mortgage payoff calculator?

Choose the tab that matches your situation, enter your loan details and interest rate, then add extra monthly, yearly, or one-time payments — or enable biweekly payments. Click Calculate to see your new payoff date and interest savings.

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