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How Much Home Can You Afford?

Free Affordability Calculator Based on the 28/36 DTI Rule

Enter your financial details below to calculate your maximum home price and see a full monthly payment breakdown. This tool uses the same front-end and back-end debt-to-income ratios that lenders evaluate.

Your Financial Details

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Your Results

Maximum Home Price
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Enter your details and click Calculate

Monthly Payment Breakdown

Principal & Interest$0
Property Taxes$0
Homeowner's Insurance$0
HOA Dues$0
Total Monthly Housing$0
Front-End DTI0%
Back-End DTI0%
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Understanding the Numbers

The 28/36 DTI Rule

Lenders use two debt-to-income ratios. The front-end ratio (28%) limits your total housing costs relative to gross income. The back-end ratio (36%) limits all debt payments combined. Our calculator uses the more restrictive of the two.

Down Payment Impact

A larger down payment directly increases your maximum home price because it reduces the loan amount and monthly payment. Putting 20% down also eliminates private mortgage insurance (PMI), saving you $100-$300/month.

Why Get Pre-Approved

Pre-approval gives you a verified borrowing limit backed by your actual credit and income. Sellers take pre-approved offers more seriously, and in competitive markets, it can make the difference between winning and losing a home.

Frequently Asked Questions

What is the 28/36 rule for home affordability?
The 28/36 rule is a guideline used by most lenders. It states that no more than 28% of your gross monthly income should go toward total housing costs (mortgage, taxes, insurance, HOA) and no more than 36% should go toward all monthly debt payments combined. Some loan programs, like FHA, allow higher ratios.
How much income do I need to buy a $300,000 home?
At a 6.75% interest rate with 10% down, you would need approximately $75,000-$85,000 in annual gross income, depending on your existing debts, local property tax rates, and insurance costs. Use the calculator above with your specific numbers for an accurate estimate.
Does a larger down payment increase how much home I can afford?
Yes. A larger down payment reduces the loan amount, which lowers your monthly principal and interest payment. This frees up room in your DTI ratio, allowing you to qualify for a higher purchase price. It also eliminates PMI at 20% down.
What debts are included in the DTI calculation?
Back-end DTI includes recurring minimum debt payments: car loans, student loans, credit card minimums, personal loans, child support, and alimony. It does not include utilities, groceries, subscriptions, cell phone bills, or other non-debt expenses.
Is this calculator the same as a pre-approval?
No. This calculator provides an estimate based on general industry guidelines. A pre-approval from a lender involves a credit check, income verification, and asset documentation, and gives you a firm commitment on your borrowing limit. We recommend getting pre-approved before you start house hunting.
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Ready to Get Pre-Approved?

This calculator is a great starting point, but a lender pre-approval gives you a verified borrowing limit that sellers trust. Connect with our preferred lending partner for a fast, no-obligation pre-approval.

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Or call us: (248) 716-6077

101 W Big Beaver Rd Suite 14, Troy MI 48307

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