How Mortgage Affordability is Calculated
Mortgage affordability is determined by several factors including your income, existing debts, down payment, and current interest rates. Lenders typically use the 28/36 rule:
- 28% Rule: Your monthly mortgage payment should not exceed 28% of your gross monthly income.
- 36% Rule: Your total monthly debt payments (including mortgage) should not exceed 36% of your gross monthly income.
Our calculator uses these guidelines to determine how much house you can comfortably afford while accounting for property taxes, insurance, and other location-based factors.
Frequently Asked Questions
What is PMI and when do I need it?
Private Mortgage Insurance (PMI) is required when your down payment is less than 20% of the home's value. It protects the lender in case you default on the loan. PMI typically costs 0.5% to 1% of your loan amount annually.
How does location affect affordability?
Location significantly impacts property taxes and insurance costs. Urban areas typically have higher property taxes and insurance rates than rural areas. Some states also have higher average property tax rates.
What's the difference between pre-qualification and pre-approval?
Pre-qualification is a preliminary assessment of your borrowing ability based on self-reported information. Pre-approval is a more thorough process where a lender verifies your financial information and commits to lending you a specific amount.
Should I choose a fixed or adjustable-rate mortgage?
Fixed-rate mortgages offer stable payments for the entire loan term, while adjustable-rate mortgages (ARMs) start with lower rates that can increase over time. Fixed rates are generally better if you plan to stay in the home long-term.
How much should I save for closing costs?
Closing costs typically range from 2% to 5% of the home's purchase price. These include loan origination fees, appraisal fees, title insurance, and other expenses. Be sure to budget for these in addition to your down payment.