Buying your first home is one of the most important and exciting financial milestones of your life. But before you hit the streets with a realtor, you need to have a good sense of a realistic budget. Just how much can you afford to spend on a house? You can determine how much house you can afford by using three “rules”, or percentages of your monthly income.

The rule of 28: The golden rule in determining how much you can afford to spend on your home is that your monthly housing payments should not exceed 28% of your gross monthly income (e.g., your income before taxes are taken out). For example, if you and a spouse have a combined annual income of $80,000, your mortgage payment shouldn’t be more than $1,866.

The rule of 32: The next rule stipulates that your total housing payments (including the mortgage, insurance, association fees, and property taxes) should not exceed 32% of your gross monthly income. That means for the same couple, their total monthly housing payment cannot be more than $2,133 per month.

The rule of 40: Finally, your total debt payments (including credit cards, car payments, or student loans) should not exceed 40% of your gross monthly income. In this example, this leaves only $533 for things like car payments and minimum credit card payments. If your debt load is higher than this number (8%) of your gross monthly income, you should only take on a mortgage that will make your total debt load equal 40% or less of your monthly income.

Determine your mortgage amount: Your interest rate will determine the actual price range you can afford. You can, however, estimate your budget. Assuming an average 6% fixed interest rate on a 30 year loan, your mortgage payments will be about $55 for every $10,000 borrowed.

  • $1,866 / $65 = 28.71
  • 28.71 x $10,000 = $287,708 (Your maximum mortgage amount)

Factor in your down payment: Hopefully you have a down payment of at least 10% up to 20% of your future home’s purchase price. Add that amount to your maximum mortgage amount, and you have a good idea of the most you can spend on a home. Note: If you put less than 20% down, you will be required to pay private mortgage insurance (PMI), which will increase your non-mortgage housing expense and decrease how much house you can afford.

Ready to go house-hunting? Save time, money, and aggravation by lining up your financing first with a mortgage pre-approval. Read my post on how to get no-obligation mortgage quotes online.

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