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Free Mortgage Payoff Calculator (+ Guide)

A free mortgage payoff calculator that shows the new payoff date and the interest saved with extra monthly or one-off payments.

Navid Moazzezby Navid Moazzez·Updated 2 de out. de 2026·4 min read·
How soon can it be yours?
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See how much sooner your mortgage is paid off, and how much interest you save, with extra payments.

1

Your mortgage today

Use principal and interest only, from your statement, without tax and insurance.

2

Pay it off sooner

3

Your result

Enter the balance you owe and your monthly payment.

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This free mortgage payoff calculator shows how much sooner your mortgage is paid off with extra payments, and how much interest you keep. Enter your balance, rate and payment, then add an extra amount each month or a one-off payment.

I built it because extra payments feel small and the savings are huge. $250 a month can take years off a mortgage, and you can see exactly how many before you decide.

Here's how paying extra works, how much each amount saves, and how to weigh it against investing the money.

key_takeaways.mdTL;DR

Key takeaways

On $280,000 at 6.5% with a $1,950 payment, $250 extra a month pays the mortgage off 62 months sooner and saves $66,761 of interest.
$1,000 extra a month cuts 145 months, more than 12 years, and saves $148,764.
A one-off $10,000 payment today saves $32,301 and 22 months.
Extra payments go straight to what you owe, so every one cuts all the interest that balance would have cost.
Paying off early beats investing only when your rate is higher than what you'd earn after tax.

What is a mortgage payoff calculator?

A mortgage payoff calculator shows how extra payments change your payoff date and the interest you pay. It runs your mortgage month by month twice: as it is, and with your extra payments.

Every extra dollar goes straight to the balance. A smaller balance means less interest every month after, so the loan shrinks faster and faster.

How to use the mortgage payoff calculator

You need three numbers from your latest mortgage statement.

Pay your mortgage off sooner0/6

Leave tax and insurance out of the payment, since they don't pay down the loan.

A worked example

Here's the example the calculator loads when you press Try an example.

You owe $280,000 at 6.5%, and you pay $1,950 a month for principal and interest. At that payment, the mortgage is paid off in 279 months, a little over 23 years, with $262,934 of interest.

Add $250 a month and it's paid off in 217 months instead. That's 62 months sooner, more than 5 years, and you pay $196,174 of interest, saving $66,761.

How much each extra amount saves

Here's the same mortgage with different extra payments a month.

$0
Months to go
279
Interest saved
$0
Sooner by
0 months
$100
Months to go
250
Interest saved
$31,975
Sooner by
29 months
$250
Months to go
217
Interest saved
$66,761
Sooner by
62 months
$500
Months to go
179
Interest saved
$105,238
Sooner by
100 months
$1,000
Months to go
134
Interest saved
$148,764
Sooner by
145 months

Even $100 a month takes almost 2.5 years off. Pick an amount you can keep paying, since a steady extra beats a big one you stop.

A one-off $10,000 today saves $32,301 and 22 months. Lump sums work best early, when the balance and the interest are highest.

Pay off the mortgage or invest?

It's a real choice, and the answer depends on your numbers.

Compare your rate with your return

Paying off a 6.5% mortgage earns a sure 6.5% on every extra dollar. Investing only wins if you'd earn more than that after tax, and that return isn't promised.

Keep cash for emergencies first

Money in your home is hard to get back out. Keep a cash buffer before you send extra to the mortgage.

Think about how you want to feel

A paid-off home lowers what you need each month, which makes every other plan easier. The retirement calculator shows what that does to your target.

@thenavidm

Money can't buy freedom, but a lack of it will take your freedom away.

Run both paths: this calculator for the mortgage, and the compound interest calculator for investing the same amount.

Before you pay extra

Check these with your lender first, so your extra money does what you want.

  • Paying extra without checking for a fee on paying early
  • Letting the lender put the extra toward next month's payment instead of the balance
  • Using your emergency fund to pay down the mortgage
  • Paying extra on the mortgage while carrying expensive card debt

Ask your lender how to mark a payment as principal only, and check your next statement.

Who is the mortgage payoff calculator for?

It's for homeowners with a mortgage who want it gone sooner, and these tools help with the plan.

Try a few extra amounts here, and pick the one you can keep paying every month.

More money calculators

Your currency and scene come with you to each one.

CalculatorWhat it answers
Mortgage calculatorWhat will a home really cost?
Compound interest calculatorWhat if I invest instead?
Net worth calculatorWhere do I stand today?
Debt payoff calculatorWhich debt should go first?

Clear the expensive debts first, then send the extra to your mortgage.

Plan your money with your AI

Take your numbers further in

Mortgage Payoff Calculator FAQs

Questions about the mortgage payoff calculator? Here's what to know.

A mortgage payoff calculator shows how extra payments change your payoff date and the interest you pay.

This free one adds one-off payments and the year by year balance.

On $280,000 at 6.5% with a $1,950 payment, it saves $66,761 of interest and 62 months.

Put in your own balance, rate and payment to see yours.

Both cut interest, and earlier is better for either.

A steady monthly extra adds up to more over the years, and a lump sum early saves the most per dollar.

Enter principal and interest only, from your statement.

Tax and insurance don't pay down the loan.

Paying it off earns a sure return equal to your rate.

Investing wins only if you'd earn more after tax, and that return isn't promised.

No, it usually keeps the payment the same and ends the loan sooner.

Ask your lender about a recast if you want a lower payment instead.

Some loans have them, so check your loan documents or ask your lender.

The calculator doesn't add any fee.

Ask your lender how to mark a payment as principal only.

Then check the next statement to see the balance drop by that amount.

Yes, download every month as a CSV, or save the plan as a page or a PDF.

Yes, it's free with no login.

I did.

I'm Navid Moazzez, and I made the mortgage payoff calculator as one of my free tools on navid.me.

More about me.

Navid Moazzez

AI business strategist & AI OS builder

Navid Moazzez helps creators and founders master AI and build their own AI Operating System (AI OS) to automate their business and life.

Navid.me is reader-supported. When you buy through links on this site, I may earn an affiliate commission. Learn more.

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