Home Affordability Calculator
Your Estimated Home Budget
Estimated Monthly Payment: $0
Based on a 36% Debt-to-Income (DTI) ratio.
Understanding How Much House You Can Afford
Determining your home buying budget is the most critical step in the real estate journey. While a bank might pre-approve you for a high amount, understanding the relationship between your income, existing debts, and monthly expenses ensures you don't become "house poor."
The 28/36 Rule
Lenders typically follow the 28/36 rule to assess risk. This rule suggests that your mortgage payment (Principal, Interest, Taxes, and Insurance) should not exceed 28% of your gross monthly income, and your total debt obligations (including the new mortgage) should not exceed 36% of your gross income.
- Front-End Ratio: The percentage of income going toward housing costs.
- Back-End Ratio: The total percentage of income going toward all debts (car loans, student loans, credit cards).
Key Factors in the Calculation
Several variables impact your total purchasing power:
- Gross Annual Income: Your total earnings before taxes and deductions.
- Down Payment: The cash you pay upfront. A 20% down payment usually eliminates the need for Private Mortgage Insurance (PMI).
- Interest Rates: Even a 1% change in interest rates can swing your buying power by tens of thousands of dollars.
- Debt-to-Income (DTI): High existing debt reduces the amount a lender will provide for a home loan.
Realistic Calculation Example
If a household earns $75,000 annually, their monthly gross income is $6,250. Using a conservative 36% DTI ratio, their total monthly debt limit is $2,250. If they already pay $400 for a car loan, they have $1,850 available for their mortgage, taxes, and insurance.
With a 6.5% interest rate on a 30-year fixed loan and a $20,000 down payment, this household could likely afford a home priced around $255,000.