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$500K House Mortgage Calculator with 20% Down

A $500,000 home purchase with 20% down means a $400,000 loan — a common scenario in many U.S. markets where median home prices have risen above $400K. Understanding the full monthly cost helps you budget accurately and compare loan options.

With 20% down ($100,000) on a 30-year fixed at 6.5%, the principal-and-interest payment on the $400,000 loan is approximately $2,528/month. Add property taxes (~$417/month at 1% rate), insurance (~$150/month), and since you put 20% down, there's no PMI — bringing total PITI to about $3,095/month.

Use the calculator below to adjust the rate, term, and local tax rate. The amortization schedule shows how your balance declines over time and how much total interest you'll pay over the life of the loan.

Loan Details

?The purchase price of the home you're considering buying.
?The amount you plan to pay upfront when purchasing the home.
?The annual interest rate on your mortgage loan.
?The length of your mortgage in years. Common terms are 15 or 30 years.
?The annual property tax rate as a percentage of home value.
?Annual homeowners insurance premium.
?Monthly homeowners association (HOA) fees, if applicable.
End of inputs

Results

Monthly Payment
$3,103.27

Total / month

Loan Amount
$400,000.00

After down payment

Total Interest
$510,179.81

Over 30 years

Monthly Payment Breakdown
Amortization Schedule
Payment Schedule
MonthPrincipalInterestBalance

360 months · Showing 0 rows

Key Insights
Over the life of this loan you'll pay $510,179.81 in interest — more than the principal itself. A shorter loan term or biweekly payments could dramatically reduce this cost.
Making one extra payment per year (about $210.69/month) could save approximately $115,879.04 in interest and pay off your loan 5.8 years earlier.
Your interest rate of 6.50% is in line with recent market averages. Shopping around with at least three lenders could still save you thousands over the life of the loan.
Your down payment of 20% or more means you avoid Private Mortgage Insurance (PMI) entirely — a saving of hundreds of dollars per month.
Your down payment of 20.00% is strong, giving you immediate equity in your home and helping you secure better loan terms.

Frequently Asked Questions

What is the monthly payment on a $500K house with 20% down?

With 20% down ($100,000), the loan amount is $400,000. At 6.5% for 30 years, principal and interest is $2,528/month. Including property taxes (~$417/month at 1%), insurance (~$150/month), and no PMI (20% down), the total PITI is approximately $3,095/month. Your actual payment depends on your local tax rate and insurance premium.

How much income do I need for a $500K house?

Using the 28% housing ratio, a PITI of ~$3,095 requires a gross monthly income of about $11,054, or roughly $132,600/year. Using the 36% total debt ratio, if you have no other debt, you could qualify with about $103,000/year. Most lenders use the more conservative of the two ratios. A co-borrower's income can be combined to meet the threshold.

How much total interest will I pay on a $400K loan?

On a $400,000 loan at 6.5% for 30 years, you'll pay $510,080 in total interest over the life of the loan — more than the loan itself. This is why even small rate reductions or extra payments can save enormous amounts. A 15-year term at 6.5% cuts total interest to about $227,000 but raises the P&I payment to $3,487/month.

Should I choose a 15-year or 30-year term for a $500K house?

A 30-year term at 6.5% gives a P&I of $2,528/month; a 15-year at 6.0% gives $3,373/month. The 15-year saves about $283,000 in total interest but costs $845/month more. If you can afford the higher payment and want to build equity faster, the 15-year is excellent. If cash flow is a priority, take the 30-year and make extra payments when you can afford them.

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