A commonly used starting point is that your total housing payment should stay at or under roughly 28 percent of your gross monthly income, and your total debts including that payment should stay under roughly 36 to 43 percent depending on the loan program. But the honest answer is that affordability is not one formula. It is a combination of your income, your existing debts, your down payment, current rates, and just as importantly, the payment you are personally comfortable carrying every month.
The guideline lenders actually use
Most conventional guidelines allow total debt, including your new house payment, to reach up to 43 to 50 percent of your gross monthly income in some cases, though the specific limit varies by lender and loan program. FHA, VA, and USDA guidelines each have their own thresholds and their own flexibility. The number a lender approves you for and the number you are actually comfortable paying every month are frequently two different figures, and the second one matters just as much as the first.
A worked example
A household earning $9,000 a month gross, with $600 in existing monthly debt, might qualify for a total housing payment approaching $3,300 a month under standard guidelines. That could translate to a home in the $400,000 to $480,000 range depending on the down payment, current rates, and local property taxes. But if that household would rather keep their housing payment closer to $2,600 a month to preserve savings and flexibility, their comfortable range shifts to something closer to $340,000 to $390,000, even though the lender would approve significantly more.
What a lender approves and what you should actually spend are two different questions. I walk every buyer through both numbers, because the second one is the one you will actually live with every month.
The four inputs that shape your real number
- Gross income, including any bonus, commission, or self-employment income with an appropriate history behind it
- Existing monthly debts, including car payments, student loans, and minimum credit card payments
- Down payment amount, which directly changes your loan size and monthly payment
- Current interest rates, which move the payment on an identical loan amount up or down over time
Common mistakes people make estimating affordability
- Using a generic online calculator that ignores taxes and insurance. Many quick tools estimate principal and interest only, which understates the real payment.
- Maxing out what a lender approves without considering personal comfort. Approval and comfort are not the same number, and confusing them can lead to feeling house poor after closing.
- Not accounting for property taxes that vary significantly by county. The same home price can carry a meaningfully different total payment depending on where it sits.
Georgia considerations
Property tax rates and homestead exemptions vary by Georgia county and city, which means the same home price and loan amount can produce a noticeably different monthly payment depending on location. This is worth factoring into any affordability estimate before comparing homes across different counties.
Frequently asked questions
It remains a useful starting guideline, but actual lender guidelines often allow higher percentages depending on the loan program, your credit, and your overall financial picture. It is a starting point, not a hard rule.
It should. A complete affordability estimate always includes principal, interest, property taxes, homeowners insurance, and mortgage insurance if applicable, not just the loan payment alone.
Not necessarily. Many buyers are more comfortable choosing a home below their maximum approval to preserve savings, flexibility, and peace of mind. This is a personal decision as much as a financial one.
Want your real number instead of a rule of thumb? Send me your income and monthly debts, and I will show you both your maximum approval and a comfortable range to actually shop within.
This article is general education, not a commitment to lend or an offer of credit. Program availability, terms, rates, and qualification guidelines vary by lender and are subject to change; all loans are subject to underwriting and final approval. Market figures are approximate and change over time. For guidance specific to your situation, reach out directly. Garrett Potz, NMLS #631592 · Affinity Home Lending, Company NMLS #1181151 · Equal Housing Lender.