Mortgages & Housing: How Much House Your Salary Actually Supports
Lenders do not start with the house — they start with your gross pay. Under the common 28/36 rule, an $80,000 salary supports a housing budget of $1,866.67 a month, and at the October 22, 2026 average rate that points to a home price of about $255,970 with 20% down.
The 28/36 rule caps housing at 28% of gross monthly income and all debt payments at 36%. On an $80,000 salary that is $1,866.67 a month for housing. After allowing $460 a month for property tax and insurance, the remaining $1,406.67 of principal and interest supports a loan of about $204,776 at 7.32% — a home price of about $255,970 with 20% down.
"How much house can I afford?" is really two questions. The first is what a lender will approve, which is a ratio test run on your gross income and your existing debts. The second is what the payment buys at today's rate, which changes every week. This hub works both questions on one salary, with every assumption stated, so you can rerun the same steps with your own numbers.
How does the 28/36 rule turn a salary into a housing budget?
It starts with gross monthly pay, before taxes. An $80,000 salary is $6,666.67 a month gross. The first ratio allows 28% of that for housing: $1,866.67 a month. The second ratio allows 36% of gross pay — $2,400 a month — for all recurring debt payments combined, housing included. That second cap is why a car payment or card minimums shrink the mortgage you qualify for: they consume room inside the same $2,400 ceiling.
From the housing budget, subtract the costs that ride along with the loan. In this worked example we allow $460 a month for property tax and homeowner's insurance — an assumption, stated openly, because those costs vary widely by location. That leaves $1,406.67 a month for principal and interest. At 7.32%, the Freddie Mac Primary Mortgage Market Survey average for a 30-year fixed loan in the week of October 22, 2026, that payment supports a loan of about $204,776. Add a 20% down payment of $51,194 and the supportable home price is about $255,970. A useful benchmark from the same math: every $100,000 borrowed at 7.32% over 30 years costs $686.93 a month in principal and interest.
Rates move — rerun this with yours. Mortgage rates change weekly, and the 7.32% figure above is a snapshot from the week of October 22, 2026, not a quote and not a promise. Before you shop, take a current rate and repeat the steps on this page. Our how we calculate page sets out the method so the arithmetic is checkable.
What do lenders count in the 28%?
Lenders count the full monthly housing cost, not just the loan payment. That means principal and interest, plus property taxes and homeowner's insurance — the four parts often shortened to PITI. If the home has homeowners association dues, those count too. And if your down payment is below 20%, mortgage insurance is added on top, which is why a smaller down payment does not stretch as far as buyers expect: the insurance premium eats into the same 28% budget that was supposed to buy more house.
This is also where optimistic estimates go wrong. A payment quoted as principal and interest only can look comfortably inside the budget while the true PITI figure sits well above it. When you compare homes, compare the full housing cost against the $1,866.67-style figure for your salary — not the loan payment alone.
Why does the rate matter more than the price tag?
Because you do not actually pay the price tag monthly — you pay for the loan, month after month, and the rate decides how that payment splits between interest and principal. At a higher rate, a much larger share of every payment is consumed by interest, so the same budget supports a smaller loan and therefore a smaller price. At a lower rate, the same budget suddenly carries more house without your income changing at all.
That is why two buyers with identical salaries, shopping in different rate environments, get very different answers to "how much house" — and why a price that was out of reach can come into reach on rate movement alone, or slip away the same way. The price tag is fixed at closing. The rate determines what that price costs you across the life of the loan, which is the number that actually lives in your budget.
Guides in this topic
Full guides for this hub are in production. The questions below are planned topics, listed as plain text until each guide is published with its own worked numbers.
- How much does a 1% difference in mortgage rate cost over 30 years?Planned guide — the same loan at two rates, compared payment by payment and in total.
- How much house can I afford on a $60,000 / $100,000 / $120,000 salary?Planned guide — the 28/36 method from this page, worked at three more salaries.
- What happens if you pay extra on your mortgage principal?Planned guide — how extra principal changes the payoff date and the total interest.
- 15-year vs 30-year mortgage: total interest side by sidePlanned guide — the payment gap and the interest gap, on the same borrowed amount.
- Is renting throwing money away?Planned guide — what rent buys, what ownership costs beyond the payment, and how to compare honestly.
Frequently asked questions
What is the 28% rule?
It is the front half of the 28/36 benchmark lenders commonly use: your total monthly housing cost should stay at or below 28% of your gross monthly income, and all of your debt payments together should stay at or below 36%.
How much should my down payment be?
As a general rule, putting 20% down avoids private mortgage insurance, which is an extra monthly cost that protects the lender, not you. Smaller down payments are possible on many loans, but the insurance cost then has to fit inside the same housing budget.
Is the salary-times-three shortcut accurate?
Only as a rough starting guess. It ignores the interest rate, property taxes, insurance, and your other debts — and as the worked example on this page shows, the rate alone can move the supportable price a long way in either direction.
If rates fall, how does my affordability change?
A lower rate means each dollar of monthly payment supports a larger loan, because less of the payment is consumed by interest. The budget set by the 28/36 rule stays the same — what changes is how much principal that budget can carry.
See the math on video
We break down housing and rate math on the Dollar Doctrine YouTube channel, with the assumptions on screen.
Watch on YouTubeEducational content only — not financial advice. The worked example assumes $460 a month for property tax and insurance and uses the Freddie Mac PMMS average 30-year fixed rate of 7.32% for the week of October 22, 2026; rates change weekly and your figures will differ. See our disclaimer.