Biweekly Mortgage Calculator
Half a payment every two weeks instead of one payment a month. It sounds like a gimmick. The math says otherwise. Here is exactly what it does to your loan.
Your loan
Strategy
Turn on one or both.
What you save
Each month a little more goes to principal and a little less to interest. See every month.
These figures come from the numbers you entered. They are an estimate, not a rate quote or an offer of credit.
Month by month, biweekly
| Month | Paid | To principal | To interest | Balance |
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I will send the schedule showing exactly when the loan clears and how the interest saving builds year by year, built from the exact figures you entered above. The first email lands within one business day.
It comes with a complimentary mortgage review: free, no obligation, and it does not start a loan application. No rate, approval, or saving is promised.
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Why half a payment every two weeks does so much
There are 52 weeks in a year, so paying every two weeks means 26 payments. Twenty six half payments is thirteen full payments. You have quietly made one extra mortgage payment a year without ever writing a check that felt bigger.
That thirteenth payment goes entirely to principal, and principal is where the leverage is. If the split between principal and interest is new to you, how a mortgage actually works explains it from the start. Every dollar you remove from the balance stops generating interest for the rest of the loan. Do that once a year, early, on a 30 year mortgage, and the effect compounds into something that genuinely surprises people the first time they see it.
The catch nobody mentions
Two things to check before you assume this works.
- Your servicer has to apply it correctly. Some will hold each half payment in a suspense account until a full monthly amount lands, or apply the extra once a year. You still keep most of the saving, but not all of it. Ask directly: will you apply biweekly payments as they arrive, and will the extra go to principal?
- Some servicers charge for a biweekly program. Do not pay a fee for this. If yours wants one, skip the program and simply add extra principal yourself each month. Turn off biweekly above, turn on extra principal, and you can size it to produce the same result, for free.
For the loan officers reading this
This is one of the highest trust conversations you can have with a client, precisely because it does not sell anything. You are showing them how to pay you less interest. Run it for them at the closing table and you will be the loan officer they call in five years, and the one they send their brother to.
Common questions
Does paying biweekly really save money?
Yes, provided your servicer applies the payments as they arrive. The saving comes from making the equivalent of one extra full payment a year, applied to principal. Run your own numbers above to see the specific figure for your loan.
Is biweekly better than just paying extra each month?
They are the same mechanism. Biweekly is a scheduling trick that produces an extra annual payment automatically. If you would rather control it yourself, add extra principal monthly. Turn either one on or off above to compare them, or turn on both to see what they do together.
Can I pay biweekly and add extra principal at the same time?
Yes. Turn on both above. The extra you enter per month is spread across your 26 biweekly payments, so the same dollars go to principal each year, and the result shows what each one saves alone and what both save together. Ask your servicer to apply the extra to principal as it arrives.
Should I pay off my mortgage early at all?
That depends on your rate and what else you would do with the money, and it is a genuine judgment call rather than a rule. A low rate mortgage is cheap debt. A high rate one is not. This calculator tells you what the payoff saves. It cannot tell you whether that beats the alternative use of the same dollars.