Mortgage payment on a $100K house
$663 a month with 20% down at 7.11% — including property tax and insurance. You'd need an income of about $28,400.
On a $100,000 home with $20,000 (20%) down, you borrow $80,000. At 7.11% (30-year fixed, Freddie Mac average for the week of Nov 12, 2026), principal and interest come to $538 a month. Adding property tax at the U.S. average of 0.9% ($75) and insurance ($50) gives $663. Over 30 years you would pay $113,739 in interest.
Payment by down payment
Putting less than 20% down means a bigger loan and mortgage insurance, so the monthly payment rises:
| Down payment | Cash down | Loan | Principal + interest | PMI / MIP | Tax + insurance | Total / month | Income needed |
|---|---|---|---|---|---|---|---|
| 20% down | $20,000 | $80,000 | $538 | $0 | $125 | $663 | $28,400 |
| 10% down | $10,000 | $90,000 | $605 | $38 | $125 | $768 | $32,900 |
| 5% down | $5,000 | $95,000 | $639 | $40 | $125 | $804 | $34,400 |
| 3.5% down (FHA) | $3,500 | $98,189 | $661 | $44 | $125 | $830 | $35,600 |
Assumes a 30-year fixed loan at 7.11%, property tax of 0.9% of the home value a year, homeowners insurance of 0.6% a year, PMI of 0.5% of the loan a year when the down payment is under 20%, and FHA mortgage insurance of 0.55% a year plus a 1.75% upfront premium added to the loan. Your rate, taxes and insurance will differ.
Payment at different interest rates
| Rate | Principal + interest | Total / month | Total interest |
|---|---|---|---|
| 5.61% | $460 | $585 | $85,516 |
| 6.11% | $485 | $610 | $94,713 |
| 6.61% | $511 | $637 | $104,124 |
| 7.11% | $538 | $663 | $113,739 |
| 7.61% | $565 | $691 | $123,547 |
| 8.11% | $593 | $718 | $133,537 |
15 vs 20 vs 30-year mortgage
| Term | Principal + interest | Total / month | Total interest |
|---|---|---|---|
| 30 years at 7.11% | $538 | $663 | $113,739 |
| 20 years at 7.11% | $626 | $751 | $70,128 |
| 15 years at 6.45% | $695 | $820 | $45,044 |
A shorter loan costs more each month but saves a lot of interest — and 15-year loans carry a lower rate (6.45% this week).
Mortgage on a $100K house in each state
Property tax changes the payment a lot from state to state (20% down):
| State | Tax rate | Tax / month | Total / month | Income needed |
|---|---|---|---|---|
| Alabama | 0.38% | $32 | $620 | $26,600 |
| Alaska | 1.06% | $88 | $676 | $29,000 |
| Arizona | 0.44% | $37 | $625 | $26,800 |
| Arkansas | 0.5% | $42 | $630 | $27,000 |
| California | 0.72% | $60 | $648 | $27,800 |
| Colorado | 0.52% | $43 | $631 | $27,100 |
| Connecticut | 1.59% | $132 | $720 | $30,900 |
| Delaware | 0.49% | $41 | $629 | $26,900 |
| District of Columbia | 0.67% | $56 | $644 | $27,600 |
| Florida | 0.8% | $67 | $655 | $28,100 |
| Georgia | 0.77% | $64 | $653 | $28,000 |
| Hawaii | 0.26% | $22 | $610 | $26,200 |
| Idaho | 0.42% | $35 | $623 | $26,700 |
| Illinois | 1.92% | $160 | $748 | $32,100 |
| Indiana | 0.74% | $62 | $650 | $27,800 |
| Iowa | 1.27% | $106 | $694 | $29,700 |
| Kansas | 1.24% | $104 | $692 | $29,700 |
| Kentucky | 0.72% | $60 | $648 | $27,800 |
| Louisiana | 0.55% | $46 | $634 | $27,200 |
| Maine | 0.92% | $77 | $665 | $28,500 |
| Maryland | 0.98% | $82 | $670 | $28,700 |
| Massachusetts | 1.01% | $84 | $673 | $28,800 |
| Michigan | 1.17% | $98 | $686 | $29,400 |
| Minnesota | 1.04% | $87 | $675 | $28,900 |
| Mississippi | 0.65% | $54 | $642 | $27,500 |
| Missouri | 0.79% | $66 | $654 | $28,000 |
| Montana | 0.69% | $57 | $646 | $27,700 |
| Nebraska | 1.31% | $109 | $698 | $29,900 |
| Nevada | 0.47% | $39 | $628 | $26,900 |
| New Hampshire | 1.43% | $119 | $708 | $30,300 |
| New Jersey | 1.82% | $151 | $740 | $31,700 |
| New Mexico | 0.63% | $53 | $641 | $27,500 |
| New York | 1.42% | $119 | $707 | $30,300 |
| North Carolina | 0.64% | $53 | $641 | $27,500 |
| North Dakota | 0.92% | $77 | $665 | $28,500 |
| Ohio | 1.22% | $102 | $690 | $29,600 |
| Oklahoma | 0.76% | $63 | $652 | $27,900 |
| Oregon | 0.79% | $66 | $654 | $28,000 |
| Pennsylvania | 1.12% | $94 | $682 | $29,200 |
| Rhode Island | 1.02% | $85 | $673 | $28,900 |
| South Carolina | 0.45% | $37 | $625 | $26,800 |
| South Dakota | 1.04% | $86 | $674 | $28,900 |
| Tennessee | 0.46% | $38 | $626 | $26,800 |
| Texas | 1.32% | $110 | $698 | $29,900 |
| Utah | 0.5% | $42 | $630 | $27,000 |
| Vermont | 1.51% | $125 | $714 | $30,600 |
| Virginia | 0.71% | $59 | $647 | $27,700 |
| Washington | 0.81% | $68 | $656 | $28,100 |
| West Virginia | 0.51% | $43 | $631 | $27,000 |
| Wisconsin | 1.2% | $100 | $688 | $29,500 |
| Wyoming | 0.56% | $46 | $635 | $27,200 |
Other home prices
Frequently asked questions
What is the monthly payment on a $100K house?
With 20% down and a 30-year fixed rate of 7.11%, the payment on a $100,000 house is about $538 for principal and interest, or $663 including average property tax and insurance.
How much income do I need for a $100K house?
Lenders generally want housing costs under 28% of gross income. A $663 monthly payment needs about $28,400 a year, assuming no other large debts.
How much do I need to put down on a $100K house?
20% is $20,000 and avoids PMI. Conventional loans allow as little as 3–5% ($3,000–$5,000) and FHA loans 3.5% ($3,500), but the monthly payment is higher.