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How to use the Mortgage Calculator
- 1Enter the home price and your down payment (as a dollar amount or a percentage).
- 2Set the interest rate and loan term (30 or 15 years are most common).
- 3Add property tax, home insurance and HOA fees for a realistic total.
- 4Review the monthly breakdown and the amortization schedule below it.
Monthly payment on $450,000 by interest rate
Principal and interest only. Every quarter point matters: compare quotes from several lenders on the same day.
| Interest rate | 30-year payment | 30-year total interest | 15-year payment | 15-year total interest |
|---|---|---|---|---|
| 5.00% | $2,416 | $419,651 | $3,559 | $190,543 |
| 5.50% | $2,555 | $469,818 | $3,677 | $211,838 |
| 6.00% | $2,698 | $521,272 | $3,797 | $233,524 |
| 6.50% | $2,844 | $573,950 | $3,920 | $255,597 |
| 7.00% | $2,994 | $627,790 | $4,045 | $278,051 |
| 7.50% | $3,146 | $682,728 | $4,172 | $300,880 |
| 8.00% | $3,302 | $738,699 | $4,300 | $324,078 |
30-year vs 15-year
At 6.5% for 30 years you pay $2,844 a month and $573,950 in interest over the life of the loan. A 15-year loan usually comes with a lower rate (about 5.9% here): the payment rises to $3,773, but total interest falls to $229,156, saving $344,795.
Your full monthly housing cost
Lenders look at the whole payment, not just the loan. Buying a $562,500 home with 20% down (a $450,000 loan), a 1% property tax and $1,800 a year of insurance adds about $619 a month, for a total of about $3,463. Property tax varies a lot by state:
| State | Property tax rate | Tax per month | Total monthly payment |
|---|---|---|---|
| Texas | 1.4% | $656 | $3,651 |
| California | 0.7% | $328 | $3,322 |
| Florida | 0.78% | $366 | $3,360 |
| New York | 1.3% | $609 | $3,604 |
| Illinois | 1.88% | $881 | $3,876 |
| New Jersey | 1.88% | $881 | $3,876 |
| Colorado | 0.5% | $234 | $3,229 |
| Arizona | 0.48% | $225 | $3,219 |
Income needed for a $450,000 mortgage
Under the common 28% rule, your total housing payment should be no more than 28% of gross monthly income. A payment of about $3,463 works out to an income of about $148,417 a year ($12,368 a month). Lenders also cap all debts, including car and student loans, at around 36–43% of income, so existing debt raises the income you need.
Down payment and home price
The same loan amount lets you buy a different home price depending on your down payment. Below 20% down, conventional loans add private mortgage insurance (PMI) until you reach 20% equity.
| Down payment | Home price | Down payment amount |
|---|---|---|
| 20% | $562,500 | $112,500 |
| 10% | $500,000 | $50,000 |
| 5% | $473,684 | $23,684 |
| 3.5% | $466,321 | $16,321 |
How the balance goes down
Early payments are mostly interest. In the first year you pay $29,102 in interest and only $5,030 off the balance. Paying an extra $100 a month would clear the loan 2 years and 10 months sooner and save $64,959 in interest.
| After | Remaining balance | Paid off |
|---|---|---|
| 1 year | $444,970 | 1% |
| 5 years | $421,249 | 6% |
| 10 years | $381,493 | 15% |
| 15 years | $326,516 | 27% |
| 20 years | $250,494 | 44% |
| 25 years | $145,369 | 68% |
Sources & review
Figures last checked in October 2026 against the official sources below. Standard amortization formula; property tax uses each state's average effective rate from the Tax Foundation.
- Tax Foundation: Property Taxes by State and County, 2026
- Consumer Financial Protection Bureau: Buying a house
Results are estimates for general information, not financial, tax or legal advice. How we check our tools
Mortgage payments for other amounts
Frequently asked questions
What is the monthly payment on a $450,000 mortgage?
About $2,844 for principal and interest at 6.5% over 30 years. At 6% it is $2,698 and at 7% it is $2,994. Property tax, insurance and any PMI or HOA fees come on top.
How much income do I need for a $450k mortgage?
Roughly $148,417 a year if you have no other debts, based on keeping the full housing payment (about $3,463) under 28% of gross income.
How much interest will I pay on a $450,000 mortgage?
$573,950 over 30 years at 6.5%, about 1.3 times the amount you borrowed, if you never pay extra. A 15-year loan cuts that to about $229,156.
What price home can I buy with a $450,000 mortgage?
$562,500 with 20% down ($112,500), or $473,684 with 5% down.