Starting your home buying journey comes with lots of questions—but the most important one is often: “How much house can I afford?” Luckily, there are straightforward guidelines that can help you set a realistic budget and confidently begin your house hunt.
What Makes a Home Affordable?
A home is considered affordable when you can comfortably cover your mortgage and other home-related expenses while still managing your other debts, like credit cards or student loans.
The 28/36 Rule
Lenders often use the 28/36 rule as a simple measure of affordability:
✅ Housing Costs: Your total monthly housing expenses should not exceed 28% of your gross monthly income.
✅ Total Debt: All monthly debt payments (including housing) should stay below 36% of your gross monthly income.
Example:
If your monthly income before taxes is $5,000:
- Housing costs should remain under $1,400 (28% of $5,000)
- Total debt payments should stay below $1,800 (36% of $5,000)
How Lenders Determine What You Can Afford
Lenders consider several factors when calculating your home affordability:
- Income: Your housing expenses (mortgage, property taxes, insurance) should generally stay at or below 28% of your gross monthly income.
- Existing Debt: Lenders prefer a debt-to-income ratio under 36%, including your mortgage and other obligations like car loans or credit cards.
- Credit Score: Better credit scores mean lower interest rates and potentially higher borrowing power:
- 740+ : Best rates
- 680–739 : Good rates
- 620–679 : Higher rates
- Under 620 : Financing may be tougher, but specialized programs can help
- Down Payment: The larger your down payment, the less you borrow, which reduces monthly payments and may eliminate private mortgage insurance (PMI).
- Interest Rates: Even a 1% increase can significantly raise monthly payments, so staying informed on rates is key.
Estimating Your Monthly Mortgage Payment
Understanding your likely monthly payment helps you set a realistic budget.
Components of a Mortgage Payment:
- Principal and Interest: The principal is your loan amount, and interest is the cost of borrowing. Over time, more of your payment goes toward the principal.
- Property Taxes: Typically 1–2% of your home’s value annually (varies by location).
- Homeowners Insurance: Required to protect your home and belongings.
- Private Mortgage Insurance (PMI): Required if your down payment is under 20%; usually 0.3–1.5% of the loan amount per year.
Mortgage Payment Formula:
If you’d like to calculate it manually: M=Pr(1+r)n(1+r)n−1M = P \frac{r(1 + r)^n}{(1 + r)^n – 1}M=P(1+r)n−1r(1+r)n
Where:
- M = Monthly payment
- P = Loan amount
- r = Monthly interest rate (annual ÷ 12)
- n = Total number of payments (loan term × 12)
(Alternatively, use a mortgage calculator for faster estimates.)
Tips to Improve Your Affordability
Want to afford a larger home? Consider these strategies:
- Boost Your Credit Score: Pay down existing debts, make timely payments, avoid new credit, and correct any errors on your credit report.
- Save for a Bigger Down Payment: A larger down payment reduces monthly payments and could remove the need for PMI.
Bottom Line
Buying your first home can feel daunting, but you’re not alone. Start by figuring out “How much house can I afford?” and work with a trusted real estate professional to guide you through every step of the process.