Affordability Calculator

Understanding Affordability

Lenders use two main ratios to determine how much you can borrow:

• Front-End Ratio (Housing Ratio): Your housing costs (mortgage, taxes, insurance, HOA) should not exceed 28% of your gross monthly income. On a $75,000 salary, that's $1,750/month maximum for housing.
• Back-End Ratio (Debt-to-Income): Your total debt (housing + car loans, student loans, credit cards) should not exceed 36% of your gross monthly income. Some FHA and VA loans allow up to 43-50%.

These ratios are guidelines, not hard caps. Some lenders allow higher DTIs for strong borrowers, but staying within these limits gives you the best rates and most flexibility.

Factors That Affect Affordability

• Income: Higher income means higher buying power. Include all stable income sources — salary, bonuses, freelance income, and investment income.
• Debt: Existing debt reduces how much you can borrow. Pay down car loans, student loans, and credit cards before applying for a mortgage.
• Down Payment: Larger down payment = more home you can afford. 20% down eliminates PMI and gives you the best terms.
• Interest Rate: Lower rates mean lower payments, increasing affordability. Even 0.5% difference changes your budget by tens of thousands.
• Credit Score: Better scores often qualify for better rates. A 760+ score gets the best conventional rates.

Common Mistakes When Determining Affordability

• Ignoring property taxes and insurance: In high-tax states, property taxes alone can add $500+/month to your payment. Insurance adds another $100-300/month.
• Forgetting HOA fees: If the home has an HOA, those fees ($100-$500/month) are part of your housing cost.
• Not accounting for maintenance: Budget 1-2% of your home's value annually for maintenance and repairs.
• Using gross income only: Remember, your mortgage is paid from after-tax income. A $75,000 salary doesn't mean $6,250/month in take-home pay.

How to Improve Your Affordability

• Pay down existing debt: Reducing your debt-to-income ratio is the fastest way to increase your qualifying amount.
• Save for a larger down payment: More down = lower loan amount = lower monthly payment = more home.
• Boost your credit score: Even 20-30 points can mean a better rate, which increases what you can afford.
• Consider a co-borrower: Adding a spouse or partner's income can significantly increase your qualifying amount.
• Look at different loan programs: FHA loans allow lower credit scores and higher DTIs. VA loans have no PMI and flexible qualifying.

Frequently Asked Questions

Does this calculator include property taxes? Yes. The calculator factors in estimated property taxes, homeowner's insurance, and PMI if applicable, giving you a complete picture of your monthly housing cost.

What if I'm self-employed? Lenders typically average your last two years of tax returns. Use your net income (after deductions), not gross. Self-employed borrowers may need to provide additional documentation.

Should I buy at my maximum affordability? No. Just because you qualify for a certain amount doesn't mean you should spend it all. A conservative approach is to aim for 25% of gross income on housing, leaving room for savings and unexpected expenses.

Related Calculators

• Mortgage Calculator — Calculate payments on a specific home price
• DTI Calculator — Check your debt-to-income ratio
• Down Payment Calculator — See how down payment affects your loan
• Compare Mortgages — Side-by-side scenario comparison