Ask the internet what percent of your income should go to housing and you will get one tidy answer: 28%. It is a fine starting point and a terrible stopping point. The honest answer is that there are two numbers in play, the one a lender will approve you for and the one you can actually live with, and they are almost never the same. Confusing the two is how people end up house rich and life poor.
The classic guideline is the 28/36 rule. It says no more than 28% of your gross monthly income should go to your housing payment, the front-end ratio, and no more than 36% should go to all your debt combined, the back-end ratio. Gross means before taxes and before anything comes out for retirement or insurance. On a household earning $8,000 a month, 28% is about $2,240 for the full housing payment and 36% is about $2,880 for housing plus car loans, student loans, and minimum credit card payments.
It is a useful sanity check. The problem is that almost nobody actually gets a loan at 28%. Modern loan programs routinely approve housing ratios well into the 40s and total-debt ratios near 50% when the rest of the file is strong. So if you lean only on the lender's maximum, the 28% rule will feel hopelessly out of date. That is the trap.
A lender's job is to decide the most you can borrow without defaulting. That maximum says nothing about the life you want to keep living inside that payment. The lender does not see:
None of that shows up on a credit report, so none of it is in the calculation. The approval marks the outer edge of what the math allows, with no margin built in for the way you actually live.
Instead of starting from what a bank will allow, start from your own budget. Add up what you genuinely spend in a normal month:
Subtract that from your take-home pay. Jeb and Josh's working guidance from years of running these numbers on the show: for a lot of people it comes out somewhere in the high 20s to mid 30s as a percent of gross income, but yours might be lower or higher depending on whether you have a car payment, student loans, or kids.
What is left is roughly what you can move toward housing without resenting the house.
One more wrinkle that the percentage hides: not all of a mortgage payment is gone for good. The principal portion is forced savings, buying you equity every month. So a housing payment that looks aggressive on paper is not identical to rent of the same size, because part of it is moving from one pocket of yours to another. That does not make a too-big payment safe, but it is worth understanding when you weigh buying against renting.
The housing ratio counts principal, interest, taxes, and insurance, and HOA dues if you have them. It does not count the rest of what owning a home costs. Maintenance, repairs, a water heater that dies in February, higher utility bills than your apartment had. A reasonable habit is to keep some margin below your maximum specifically for those surprises, plus a cash reserve after closing so that a normal emergency is an inconvenience and not a crisis. The percentage on a spreadsheet is clean. Homeownership is not.
Use 28% as a gut check, not a verdict. Treat the lender's approval as the absolute ceiling, then deliberately choose a payment below it that protects the parts of your life you are not willing to give up. The goal is a payment that lets you own the home and still recognize your life inside it. A good first step is the free two-minute quiz, which shows you where you stand before you run a single number.
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Get my readiness score →It is a budgeting guideline that suggests keeping your housing payment under 28% of your gross monthly income and your total debt payments under 36%. Gross income is before taxes and deductions. It is a helpful starting benchmark, though most loan programs will approve ratios higher than this.
Yes, and most buyers do. Loan programs frequently approve housing ratios well into the 40s when credit, income, and reserves are strong. The real question is not whether a lender will allow it but whether the payment still leaves room for the rest of your life and your savings.
Lenders calculate ratios from gross income, before taxes. For your own budgeting, it is smarter to work from net, your actual take-home pay, since that is the money you live on. Comparing both is useful: the gross ratio tells you what you can qualify for, the net budget tells you what you can comfortably afford.
Not entirely. The interest, taxes, and insurance are costs, but the principal portion builds your equity, so it is effectively forced savings moving from one of your pockets to another. That is one reason a mortgage payment is not a perfect apples-to-apples comparison with rent of the same amount.
It covers principal, interest, taxes, insurance, and HOA dues, but not maintenance, repairs, or the generally higher utility bills of a home versus an apartment. Smart buyers keep a margin below their maximum payment and a cash reserve after closing to absorb those expenses.