Compare Mortgage Terms (15 / 20 / 30 yr)

See how loan length changes your payment, and how much interest you pay over the life of the loan.

Your numbers

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Your payments

30-year payment
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Assumes a fixed rate. Shorter terms mean higher payments but far less total interest.
About this calculator

Compare Mortgage Terms (15 / 20 / 30 yr)

A mortgage term comparison calculator shows side by side what a 15-, 20-, and 30-year loan would cost, both the monthly payment and the total interest over the life of the loan.

Payment flexibility vs. total cost

A shorter term trades a higher monthly payment for dramatically less interest and faster equity, a 15-year loan often costs more per month but can save well into six figures over its life. A 30-year keeps the required payment low and your budget flexible. The right choice depends on whether you value cash-flow room or total savings more.

The middle path: a long loan, paid fast

You don't have to choose permanently. Taking a 30-year loan and voluntarily paying it like a 15- or 20-year captures much of the interest savings while leaving you free to drop back to the lower required payment in a tight month. The catch is discipline, the savings only materialize if you actually make the extra payments.

How to use it

  1. Enter the loan amount and interest rate.
  2. Compare the monthly payment for each term.
  3. Compare total interest across the three terms.
  4. See how much a 15-year loan saves over a 30-year.

Frequently asked questions

Is a 15-year or 30-year mortgage better?

A 15-year loan has a higher payment but can save six figures in interest and builds equity faster. A 30-year keeps payments lower and more flexible. It depends on your budget and goals.

How much does a shorter term save?

Often more than half the total interest, since you borrow for half as long at a similar rate. The comparison shows exact figures for your loan.

Can I just pay a 30-year loan faster?

Yes, a 30-year loan with extra principal payments gives flexibility with much of the interest savings. See our extra-payments calculator.

See the exact formula and a worked example on our methodology page.

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