What Determines How Much Home You Can Afford?
Buying a home is one of the greatest financial decisions you’ll ever make—and one of the most personal. But how do you know what price range is realistic for you?
While your dream home may come with a price tag, your affordability is determined by a combination of factors like income, debt, credit, down payment, and even location. Here’s what really impacts how much home you can afford and how to confidently shop within your budget.
1. Your Gross Monthly Income
Lenders start by looking at your gross income—your total earnings before taxes and deductions. This helps determine what monthly mortgage payment you can reasonably handle.
While many lenders suggest that your housing costs ideally stay under 28% of your gross income, it’s not a hard limit. Some borrowers may qualify with a higher housing ratio, especially if they have strong credit, low debt, or substantial savings. Your housing cost includes principal, interest, property taxes, homeowners insurance, and any HOA fees. Working with a loan officer is the best way to determine your personal maximum housing ratio based on your entire financial profile and mortgage program options.
For Example: If your gross monthly income is $8,000, your housing costs should ideally be no more than $2,240 (28%). This represents an optimum target used by many lenders, but it’s possible to qualify for more depending on your full financial profile.
2. Your Debt-to-Income Ratio (DTI)
Your DTI ratio compares your monthly debt (student loans, car payments, credit cards, etc.) to your gross monthly income.
Most lenders want your total DTI—including your new mortgage payment—to be no more than 40%. Depending on the loan program and your credit profile, Revix allows DTI ratios from 45% to 50% based on your complete financial picture, including credit, reserves, and overall risk factors.
3. Your Credit Score
Credit plays a big role in determining your loan eligibility, interest rate, and even how much you can borrow.
- A higher credit score = better loan terms and lower monthly payments.
- A lower score may reduce your buying power or require a larger down payment.
FICO scores range from 300 to 850. A score over 720 is considered good, and 780+ is exceptional. Improving your credit prior to applying for a mortgage can significantly lower your interest rate and monthly payment.
Tip: For conventional loans, aim for a credit score of 700+ to get the best interest rates. Revix can work with scores as low as 620 on conventional loans, depending on your full profile. FHA loans do not adjust interest rates based on credit score and allow credit scores as low as 580 to qualify.
4. Your Down Payment
The size of your down payment affects your loan amount and whether you’ll need to pay mortgage insurance.
- A 20% down payment helps you avoid PMI (private mortgage insurance) on conventional loans. While 20% is ideal, it’s not required—many conventional loans allow down payments as low as 3%, especially for first-time buyers.
- FHA loans allow as little as 3.5% down, but MIP (mortgage insurance premium) applies.
More Down = Lower Monthly Payment
Example: A 20% down payment on a $550,000 home is $110,000, while a 3% down payment is $16,500. More money upfront means a smaller loan and less interest paid over time.
Try our Revix Affordability Calculator to get a more complete view of your homebuying budget.
5. Loan Program and Interest Rates
The type of mortgage you qualify for—conventional, FHA, VA, USDA—and your interest rate directly affect your monthly payment and how much home you can afford.
- Fixed-rate loans offer predictable payments.
- Adjustable-rate mortgages (ARMs) may have lower starting payments but could rise over time.
Even small differences in rates can change your budget by hundreds of dollars per month. For example, a 30-year loan of $500,000 at 6.75% would cost $3,242/month (excluding taxes and insurance), while the same loan at 6.45% would cost $3,144/month.
Check out today’s rates here to get a clearer picture of your homebuying power.
6. Local Property Taxes and Homeowners Insurance
Don’t forget to factor in the cost of property taxes and insurance. These vary by location and can add hundreds to your monthly payment.
In Texas and Florida, for example, property tax rates can range from 0.89% to over 2% of your home’s assessed value. Florida’s average homeowners insurance rate is 1.894%. If your home is valued at $350,000, this could add up to over $800/month in taxes and insurance combined.
While many borrowers choose to escrow these costs—meaning a portion is collected each month with your mortgage payment and held until due—you may have the option to waive escrows depending on your loan program. This typically comes with a fee paid to the lender.
Pro Tip: Ask your lender or real estate agent for estimates in your area when budgeting.
7. Your Lifestyle and Spending Habits
Just because a lender says you can afford a certain home doesn’t mean you should borrow the maximum amount. Be honest about your lifestyle, savings goals, and future plans.
- Do you want to travel?
- Are you saving for college or retirement?
- Will you need a new car or plan to start a family?
Building a budget that reflects your life—not just your loan eligibility—can protect you from being house poor.
Affordability in Action: A Real-World Example
Jasmine from Orlando, Florida, earns $7,000/month and has $800 in car and credit card payments. She’s pre-approved for a 30-year fixed mortgage and has saved $40,000 for a down payment.
Using the 36% DTI rule, she can afford up to $2,520/month in total housing costs. Based on the average Florida property tax rate of 0.89% and average homeowners insurance rate of 1.894%, Jasmine estimates her property taxes at about $260/month and homeowners insurance around $552/month on a $350,000 home—totaling roughly $812/month for taxes and insurance.
After accounting for these costs, she targets a mortgage payment of roughly $1,708/month for principal and interest. That translates to a home price of around $325,000–$350,000, depending on the loan program, rate, and other variables.
This example highlights how working with a loan advisor can help buyers model accurate numbers using local cost factors and personal financial data.
FAQs: What Buyers Often Ask About Affordability
How do lenders calculate how much house I can afford?
Lenders look at your income, debts, credit, and down payment to determine your maximum monthly housing payment, usually using guidelines like the 28/36 rule.
Do I have to follow the 28/36 rule exactly?
Not necessarily. It’s a guideline, and some buyers may qualify for higher ratios depending on credit, income, and savings.
Does my credit score impact how much I can afford?
Yes—a higher score can qualify you for lower rates, reducing your payment and increasing your buying power.
What costs do buyers often forget?
Property taxes, homeowners insurance, HOA fees, and maintenance—these can add hundreds to your monthly payment.
Should I rely on online calculators or get pre-approved?
Online calculators are a good start, but pre-approval gives you real numbers based on your full financial situation.
Can I spend the maximum I’m pre-approved for?
You can, but you don’t have to. Choose a budget that matches your lifestyle and long-term goals, not just what a lender says you can afford.
The Bottom Line
Figuring out how much home you can afford gives you a clear, confident starting point. Focus on what fits your budget—not just what you qualify for.
Before house hunting, get pre-approved with Revix to see your actual buying power. Our expert advisors will guide you through the process and help you find a mortgage that fits your life.
Start your home search with clarity. Get pre-approved with Revix today.
