Monthly Payment on a $600,000 Mortgage

Reading a $600,000 mortgage payment

The figures above are principal and interest (P&I) only — the part of the payment that pays down the loan plus the lender’s interest. Your real monthly cost also includes property tax, homeowners insurance, any HOA dues, and PMI if your down payment is under 20%. Use the full calculator to add those and see your total.

A lower rate or a shorter term changes the number a lot. A 15-year term has a higher monthly payment than a 30-year, but far less total interest over the life of the loan.

Sizing income for a $600,000 loan

Underwriters size a mortgage against gross income, and the 28/36 rule is the convention quoted most often: housing costs at or under 28% of gross monthly income, all debt payments together at or under 36%. Run backwards, the $3,792.41 principal-and-interest payment at 6.5% over 30 years implies a gross income of about $162,532 a year — $13,544 a month — for this payment alone to sit at the 28% mark.

Read the two conventions together: at $126,414 of income this payment uses the entire 36% debt allowance by itself, while at $162,532 it takes 28% and leaves the remainder for everything else. An actual approval also counts property tax and insurance inside the housing figure, which pushes the implied income higher than the principal-and-interest arithmetic here.

The house prices a $600,000 loan reaches

A loan amount is not a listing price — the down payment stands between them. A $600,000 loan matches roughly a $750,000 purchase with 20% down ($150,000 in cash), a $666,667 purchase with 10% down ($66,667), or a $631,579 purchase with 5% down ($31,579).

Below 20% down, lenders typically add private mortgage insurance to the bill until your equity grows past that line, so the smaller-cash routes above carry a recurring cost the loan arithmetic alone does not show.

$600,000 over 15 years versus 30

At 6.5%, the 30-year schedule runs $3,792.41 a month and accumulates $765,267 of interest by the final payment. The 15-year schedule runs $5,226.64 — $1,434.23 more each month — and accumulates $340,796, a difference of $424,471 over the life of the loan.

Neither schedule is free money: the 15-year term trades a permanently higher required payment for a shorter interest clock. What the comparison prices is the choice of spreading $600,000 across twice as many payments.

What $500.00 more a month does to $600,000

Take the 30-year schedule at 6.5% and add $500.00 to every payment — one percent of the loan per year, spread monthly. The loan retires in 262 months instead of 360: 8 years and 2 months sooner, and $240,673.87 less interest paid ($524,593 instead of $765,267).

Scaled the other way, the extra adds up to $6,000 a year against a $600,000 balance, yet clears 8 years and 2 months from the calendar. The leverage comes from compounding in reverse: every dollar of early principal cancels the interest it would have carried in each remaining month.

Rate-shopping a $600,000 loan in dollars

In the middle of the range these pages cover, rate-shopping starts to pay for the effort in real dollars. Between 6.5% and 6.25% — a quarter point — the payment on $600,000 moves from $3,792.41 to $3,694.30. That is $98.11 a month, or about $35,320 across 360 payments.

The same quarter point matters more here than on a smaller loan and less than on a larger one, because rate differences scale with the balance. The pages for nearby amounts run the identical arithmetic if your quote lands on a different loan size.

Frequently asked questions about a $600,000 mortgage