Required Salary to Afford a Home

You found a house you like and the listing says $350,000. The question that follows is not what the payment would be, it is whether a lender would take you seriously at your current pay. That is what this page answers: it starts from the house and works back to the salary.

The rule lenders actually apply

Underwriting begins with the front-end DTI (Debt-to-Income) ratio, also called the housing ratio. It compares your total monthly housing cost against your gross monthly income, before tax, and the conventional ceiling is 28%. Rearranged, that is the whole calculation here:

Required gross monthly income = Monthly housing cost ÷ 0.28

The part people get wrong is what counts as housing cost. It is not the loan payment. It is PITI: Principal, Interest, Taxes and Insurance, all four, plus any homeowners association dues. Property tax on a $350,000 house at 1.2% is $350 a month before a cent of the mortgage is paid, and it counts against the ratio in full.

The loan payment

M = L × [ r(1 + r)^n ] ÷ [ (1 + r)^n − 1 ]

L is the loan (price minus down payment), r is the monthly rate (annual rate divided by 12), and n is the number of monthly payments.

Worked example

A $350,000 house, 20% down, 6.5% over 30 years, property tax 1.2%, insurance quoted at $145 a month.

• Loan: $280,000
• Mortgage payment: $1,769.79
• Property tax: $350.00
• Insurance: $145.00
• Total housing: $2,264.79 a month
• Required gross monthly: $2,264.79 ÷ 0.28 = $8,089
• Required salary: about $97,060 a year

Notice how little of that is the house. Change the interest rate to 8% and the same house needs roughly $110,000. Rates move the required salary more than the price does, which is why the affordability conversation shifts so violently between years.

Three things this deliberately does not know

Your other debts. Lenders also apply a back-end ratio of 36%, covering housing plus the car loan, student loans and minimum credit card payments together. If you carry $600 a month of those, the 28% front-end figure stops being the binding constraint and the 36% one takes over. The income to mortgage calculator runs both ratios and works in the opposite direction, from a salary you already have to the house it supports.

PMI (Private Mortgage Insurance). Below 20% down, most conventional loans add it, commonly 0.4% to 1.5% of the loan a year. On a $315,000 loan that is another $105 to $394 a month, and it lands inside the 28% ratio like everything else. The calculator flags this rather than guessing a rate for you.

And the 28% itself is a guideline, not a statute. Lenders approve above it every day for borrowers with strong credit, large reserves or a long history in the same job, and Federal Housing Administration loans routinely run higher. Treat the number here as the salary at which nobody has to make an exception for you.