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$400K Mortgage Payment (15-Year)

A $400K mortgage over 15 years costs about $3,484/month in principal and interest at a 6.5% rate. At 5.5% it is $3,268/mo; at 7.5% it is $3,708/mo. Over the full term you would pay about $227,197 in interest.

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Monthly payment by interest rate

Interest rate	Monthly payment (15-year)
5.5%	$3,268
6.0%	$3,375
6.5%	$3,484
7.0%	$3,595
7.5%	$3,708

Principal and interest only. Your full monthly payment also includes property tax, homeowners insurance, PMI (if you put less than 20% down), and any HOA dues — add those in the calculator.

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Frequently asked questions

How much is a $400K mortgage per month?

At 6.5% over 15 years, a $400K mortgage is about $3,484 per month in principal and interest. Over 30 years it is about $2,528 per month.

How much total interest on a $400K mortgage?

Over 15 years at 6.5%, you would pay about $227,197 in total interest, for about $627,197 in total payments on the $400K loan.