What affordability really means
Affordability is not just about what payment a lender might approve. It is about how much housing cost fits inside the rest of your life. This calculator starts with the 28/36 rule because it is a useful qualification baseline, then converts that monthly budget into a home price after factoring in taxes, insurance, HOA dues, and your chosen down payment.
That matters because two households with the same income can have very different affordable prices. A buyer in a low-tax market with no HOA can support a larger mortgage than a buyer in a high-tax market with the same salary and the same interest rate.
Why debts change the result so much
Existing monthly obligations reduce the room available for housing. Car loans, student loans, minimum credit-card payments, and other recurring debt are part of the back-end ratio that lenders watch closely. Even a few hundred dollars per month in debt can trim tens of thousands from the affordable home price.
How to use the number well
- Use the result as an upper boundary, not a target you must hit.
- Model local taxes and realistic insurance costs, not generic guesses.
- Leave room for maintenance, repairs, utilities, and savings.
- Compare the result with your comfort level, not only lender rules.