Mortgage Payoff Calculator

How this result is built

See how a lump sum and a higher monthly payment change the date and the interest left on a mortgage.

Payoff math starts from the balance you have today, not the original loan. A lump sum comes off first. The scheduled payment and any extra principal then run forward until the balance is gone.

What the opening example is for

The comparison line keeps the interest you would pay if you only made the scheduled payment. That difference is the cost of waiting, stated in dollars rather than in a slogan.

The walkthrough below uses the numbers already sitting in Mortgage Payoff Calculator. Press Calculate and the headline should match this page. Then put your own figures in. The math does not run until you press the button, and Clear hides the result.

What each field is doing

The “Current balance” line on Mortgage Payoff Calculator starts at $280,000.00. A round example is useful for learning the page. It is a poor substitute for the number on your own paperwork, so replace it and run the form again.

Mortgage Payoff Calculator treats “Interest rate” as its own entry, and the form opens with 6.10%. The other fields stay put while you change this one. That is the clean way to see what this line is doing inside the result.

Before you replace it, “Scheduled monthly payment” reads $1,900.00 on Mortgage Payoff Calculator. If the label is a rate, type the annual figure the contract uses. If it is money, type the amount that will actually move, not a rounded hope.

The remaining fields

Look at “Extra principal each month” first if you are checking Mortgage Payoff Calculator: the filled value is $200.00. Leave that figure only when it matches the statement, the quote, or the plan you are testing. Press Calculate after the edit so the chart and the schedule move with it.

The “Lump sum paid now” line on Mortgage Payoff Calculator starts at $10,000.00. A round example is useful for learning the page. It is a poor substitute for the number on your own paperwork, so replace it and run the form again.

The opening result, line by line

Press Calculate on the opening form and Payoff time is 17 years 6 months. That is the number the rest of this section is talking about.

Balance after lump sum is $270,000.00 when you run the opening figures on Mortgage Payoff Calculator. That line is part of the same calculation as the headline. It is not a second balance you can spend on top of the result. Change one input and press Calculate if you want to see whether this line moves.

On this opening pass, interest still due is $169,046.36. That line is part of the same calculation as the headline. It is not a second balance you can spend on top of the result. Change one input and press Calculate if you want to see whether this line moves.

Mortgage Payoff Calculator reports that interest without the extra plan is $238,160.33. That line is part of the same calculation as the headline. It is not a second balance you can spend on top of the result. Change one input and press Calculate if you want to see whether this line moves.

How those lines were produced

Interest saved is $69,113.97 when you run the opening figures on Mortgage Payoff Calculator. That line is part of the same calculation as the headline. It is not a second balance you can spend on top of the result. Change one input and press Calculate if you want to see whether this line moves.

The lump sum is applied before the monthly extra payments begin.

A second pass changes only “Current balance”, from $280,000.00 to $308,000.00. Payoff time moves from 17 years 6 months to 21 years 1 month. Nothing else on the form was edited, so the gap between those two results is the effect of that one field on Mortgage Payoff Calculator. If the gap is tiny, this page is not very sensitive to that entry. If the gap is large, get that entry from a document before you plan around the result.

What this page will not claim

Mortgage Payoff Calculator does not know your credit score, the county’s tax bill, or what an appraiser will say. Type the price, the loan, and the escrow you were quoted. Compare the payment with the loan estimate, and treat a small rounding difference as normal.

Mortgage Payoff Calculator stops at its own formula. When the next question is different, open Amortization Calculator (A schedule that shows where each payment goes.); Extra Payment Calculator (One extra amount, every month, on any fixed loan.); Biweekly Mortgage Calculator (Thirteen monthly payments a year, without the slogan.). Do not add those results to this one as if they were the same kind of dollar.

Check the result before you use it

Start on Mortgage Payoff Calculator by reading the labels, not the headline. The opening labels are Current balance ($280,000.00), Interest rate (6.10%), Scheduled monthly payment ($1,900.00), Extra principal each month ($200.00), Lump sum paid now ($10,000.00). If a label is not the fact you have, the result cannot turn into that fact later. The illustration on the form lands on 17 years 6 months. When you press Calculate and see that same figure, the button and this explanation are using one formula.

Change one field at a time. Write down the headline, edit a single line, and press Calculate again. A large jump means that line carries the result. A line that does not move is a line the formula ignores, which is a reason to confirm you opened the right page. Mortgage Payoff Calculator is built for one job: Lump sum plus extra monthly principal. The description on the page says the same thing in a sentence: See how a lump sum and a higher monthly payment change the date and the interest left on a mortgage.

When the paperwork disagrees

Then hold the headline next to a source outside the site. That source might be a loan estimate, an account statement, a pay stub, or the public limit named in the methodology. A few cents of difference on a long schedule is ordinary rounding. A different rate, a fee you never typed, or a tax the form does not ask for is not rounding. Correct the input. Do not average the page with the paperwork.

When the outside source still disagrees, Mortgage Payoff Calculator has reached the edge of what it will claim. It will not phone a lender, pull a county record, or apply a credit you left blank. Send the calculator name, every input, and the result you expected through the contact page if you think the formula itself is wrong. Until that is settled, read 17 years 6 months as the output of the fields above and nothing else.

FAQs