TrueAffordHouse Affordability Calculator
What a house actually costs you every month
A mortgage payment is not the cost of owning a house. This calculator adds the piece almost everyone forgets — a maintenance reserve — on top of principal, interest, tax, insurance, and PMI, so the number you see is the number you'll actually pay.
Your result
Comfortable — up to $267,424
A lender would likely approve up to
$335,507
You can actually sustain up to
$462,699
Your budget can support at least as much as a lender's generous debt-to-income ceiling — the DTI limit isn't what's holding you back here.
Monthly cost at $267,424
- Principal & interest
- $1,495
- Property tax
- $363
- Homeowner's insurance
- $319
- PMI (drops at month 79)
- $63
- HOA dues
- $0
- Lender-counted payment (P&I + tax + insurance + PMI + HOA)
- $2,240
- Maintenance reserve (1%/yr) ?
- $223
- True monthly cost
- $2,463
Left over each month after this payment, other debts, and real-life expenses
$2,037
What's driving this
- Your $1,300/mo in childcare, healthcare, groceries, and other real-life expenses doesn't affect what a lender will approve, but it directly reduces what's left over each month.
- Texas property tax at 1.63% is costing you roughly $141/mo more than the national average would suggest.
- Homeowner's insurance in Texas is costing you roughly $141/mo more than the national average would suggest.
What would change this ?
Interest rate ±1 point
$284,431 · $267,424 · $253,639
Max affordable price a point lower, at today's rate, and a point higher.
If income dropped 20%
Comfortable → Risky
At $6,400/mo gross, holding this home price constant.
If adding a child
Comfortable → Comfortable
Assumes +$1,200/mo in childcare, a national-average illustrative figure.
With $20,000 more down
$2,463 → $2,269/mo
PMI: $63 → $0/mo
Frequently asked questions
Why is there a maintenance line I didn't ask for?
Because it's a real, unavoidable cost of owning a house, and most calculators quietly drop it to make the number look smaller. This one budgets 1% of home value per year by default — roofs, water heaters, and HVAC systems don't wait for a convenient time to fail.
When does PMI go away?
Private mortgage insurance is required whenever your down payment is under 20%. By federal law, it automatically cancels once your loan balance amortizes down to 78% of the home's original value — this calculator shows you the actual month that happens, rather than pretending PMI is a permanent cost or a non-existent one.
Is a 15-year or 30-year term cheaper?
A 15-year term carries a lower interest rate and builds equity far faster, but the monthly payment is meaningfully higher for the same loan amount. Toggle the loan term in the calculator to see both the monthly payment and the total cost difference for your specific numbers.
What if I put down less than 20%?
You'll pay PMI until you cross the 78% loan-to-value line, which this calculator itemizes as its own line in the monthly breakdown — along with what an additional down payment would need to be to skip it entirely.
How much house affordability do I need before I buy a house?
Before you buy a house, run your numbers here first, not at the lender's desk. House affordability isn't just the price a lender will approve — it's the price that still leaves room in your budget after tax, insurance, PMI, and maintenance. This calculator shows both figures so you're negotiating from your own number, not theirs.
Related: Home affordability calculator · Mortgage calculator · Methodology