When people think about qualifying for a mortgage, credit scores usually get all the attention. While credit is important, there’s another detail that often plays an even bigger role in how much home you can actually afford, and many buyers don’t think about it early enough.

That detail is your Debt-to-Income ratio, commonly called DTI.

Understanding how DTI works (and how it’s calculated) can make a meaningful difference in your home-buying journey.

What Is Debt-to-Income Ratio (DTI)?

Your DTI measures how much of your gross monthly income goes toward recurring monthly debt payments. This includes things like:

  • Car loans
  • Credit cards
  • Student loans
  • Personal loans
  • Minimum debt payments
  • Your estimated new housing payment (mortgage, property taxes, homeowners’ insurance, HOA dues, and mortgage insurance if applicable)

DTI is expressed as a percentage and helps lenders determine whether taking on a mortgage payment is financially sustainable.

In most cases, allowable DTI ranges from 45% to 49.99%, though some loan programs may allow up to 55% under certain conditions.

It’s also important to know that credit score and DTI work together:

  • A higher credit score can sometimes allow more flexibility with DTI.
  • A lower credit score may require tighter DTI limits.

This is why two buyers with similar incomes can qualify for very different loan amounts.

Why DTI Matters for Your Mortgage

A higher DTI can:

  • Limit the loan amount you qualify for
  • Reduce your loan program options
  • Lower your chances of approval

Here’s a simple example:

If your gross monthly income is $6,000 and your total monthly debts (including the estimated new housing payment) add up to $2,100, your DTI would be 35%.

That percentage helps lenders decide how much additional debt—like a mortgage—you can reasonably take on.

A Commonly Overlooked Factor: Property Taxes

One part of the housing payment that can be tricky to estimate early on is property taxes.

Here’s why they matter:

  • Property taxes are often based on what the current homeowner is paying.
  • Someone who has owned a home for 30–40 years may be paying significantly less in taxes than a recent buyer.
  • When a home is sold, taxes can be reset based on the new purchase price.
  • This reset can increase the monthly payment and, in turn, your DTI.

Lenders typically use the current tax amount when setting up the loan, but it’s smart to plan ahead especially if your budget or qualification numbers are tight so future increases don’t come as a surprise.

Ways to Improve Your DTI

If you’re preparing to buy a home, here are some strategies many buyers focus on before applying:

  • Pay down revolving balances

Lowering credit card balances can reduce your monthly minimum payments, even if the accounts stay open.

  • Avoid new monthly obligations

New cars, furniture financing, or personal loans can quickly increase your DTI.

  • Review installment loans strategically

Sometimes paying a loan down to a certain balance or paying it off entirely can reduce or eliminate the payment used in DTI calculations.

  • Increase documentable income

Overtime, bonuses, or similar, may count if they meet lender guidelines.

  • Refinance or restructure existing debt

Lower monthly payments can improve DTI, though timing and loan type matter.

  • Get guidance before making changes

Small financial moves can have big impacts, and the right strategy isn’t always obvious without looking at the full picture.

Thinking About Buying a Home?

Getting your DTI in a healthy range before you apply for a mortgage is one of the smartest steps you can take. A little planning can open up more options, reduce stress, and help you shop with confidence.

If you’re unsure where you stand, a quick review of your numbers can bring clarity and help you understand what’s realistic for your budget and goals.

The more informed you are upfront, the smoother the journey tends to be!

Lynn Marie Oates
Mortgage Loan Officer NMLS #1495433
(248) 875-1029
lynnoates@goforwardmortgage.com

I know firsthand how overwhelming securing a mortgage can feel — and that’s exactly why I’m here. With my experience and a heart for helping people, my goal is to guide you through every step with clarity, patience, and care.

I take a personalized, relationship-first approach, offering full support and clear communication so you never feel rushed or unsure. I take the time to understand your goals, explain your options, and help you put your strongest offer forward when it matters most.

Helping people feel confident, prepared, and excited about homeownership isn’t just part of my job — it’s what I truly love to do!

Posted in Lynns Blogs