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Calculating Your Monthly Debt-to-Income Ratio

  • Ryan Daly
  • Oct 15
  • 4 min read

Buying a home is an exciting journey, but it can also feel overwhelming. One of the key numbers lenders look at when you apply for a mortgage is your debt-to-income ratio, or DTI. Understanding your home loan DTI can help you know where you stand financially and what you can afford. I’m here to break it down for you in a friendly, straightforward way so you can feel confident moving forward.


What Is Home Loan DTI and Why Does It Matter?


Your home loan DTI is a simple calculation that compares your monthly debt payments to your gross monthly income. Lenders use this number to see if you can comfortably manage a mortgage payment along with your other debts. It’s a crucial part of the mortgage approval process.


Here’s how it works:


  • Monthly debts include things like credit card payments, car loans, student loans, and any other recurring debt.

  • Gross monthly income is the total amount you earn before taxes and deductions.


The formula looks like this:


```

Home Loan DTI = (Total Monthly Debt Payments ÷ Gross Monthly Income) × 100

```


For example, if your monthly debts add up to $1,500 and your gross income is $5,000, your DTI would be:


```

($1,500 ÷ $5,000) × 100 = 30%

```


This means 30% of your income goes toward paying debts.


Eye-level view of a calculator and financial documents on a desk
Calculating monthly debts and income for home loan DTI

Knowing your home loan DTI helps you understand how lenders see your financial health. It also guides you in making smart decisions about how much house you can afford without stretching your budget too thin.


How to Calculate Your Home Loan DTI Step-by-Step


Calculating your home loan DTI might sound complicated, but it’s really just a matter of gathering a few numbers and doing some simple math. Here’s a step-by-step guide:


  1. List all your monthly debt payments. Include:

  2. Credit card minimum payments

  3. Car loans

  4. Student loans

  5. Personal loans

  6. Alimony or child support payments

  7. Any other recurring debt obligations


  8. Add up your total monthly debt payments. This is the number you’ll use in the numerator of the formula.


  9. Determine your gross monthly income. This is your income before taxes and deductions. If you have multiple income sources, add them together.


  10. Divide your total monthly debt payments by your gross monthly income.


  11. Multiply the result by 100 to get a percentage.


Let’s say you have the following monthly debts:


  • Credit card: $200

  • Car loan: $350

  • Student loan: $150


Total monthly debts = $700


If your gross monthly income is $4,000, then:


```

($700 ÷ $4,000) × 100 = 17.5%

```


Your home loan DTI is 17.5%, which is a strong position when applying for a mortgage.


Close-up of a person writing numbers on a notepad with a laptop nearby
Calculating home loan DTI with simple math steps

If you want to get a quick estimate, you can also use online calculators, but I recommend doing it yourself to really understand your financial picture.


What Is a Good Monthly Debt-to-Income Ratio?


When it comes to home loans, lenders generally prefer a DTI below 43%, but the ideal number is often lower. Here’s a quick breakdown:


  • Below 36%: Excellent. You’re in a strong position to qualify for most loans.

  • 36% to 43%: Acceptable. You may still qualify, but lenders will look closely at your overall financial situation.

  • Above 43%: Riskier. You might face challenges getting approved or may need to improve your finances first.


Keep in mind, some loan programs have stricter limits, while others are more flexible. For example, FHA loans might allow a higher DTI if you have other strong financial factors.


High angle view of a chart showing different debt-to-income ratio ranges
Visual guide to good and bad home loan DTI percentages

If your DTI is higher than you’d like, don’t worry. There are ways to improve it, like paying down debt, increasing your income, or adjusting your homebuying budget.


Tips to Improve Your Home Loan DTI Before Applying


Improving your home loan DTI can increase your chances of mortgage approval and help you get better loan terms. Here are some practical tips:


  • Pay down credit card balances. Focus on reducing high-interest debt first.

  • Avoid taking on new debt. Hold off on big purchases or new loans before applying.

  • Increase your income. Consider side gigs, bonuses, or overtime if possible.

  • Refinance or consolidate loans. Lower monthly payments can reduce your DTI.

  • Check for errors on your credit report. Fixing mistakes can improve your credit score and financial profile.


By taking these steps, you’ll not only improve your DTI but also build a stronger financial foundation for homeownership.


Ready to Take the Next Step? Let’s Make It Easy


Understanding your monthly debt-to-income ratio is just the beginning. As a seasoned loan officer with over 20 years of experience, I’m here to guide you through every step of the mortgage process. Whether you’re a first-time buyer or moving up to your next home, I’ll help you close fast, save money, and feel confident.


If you’re ready to see what you qualify for or want personalized advice, don’t hesitate to reach out. Book now or Apply With Daly to get started on your homebuying journey today.


Your dream home in Charlotte is closer than you think!



 
 
 

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704-491-7902

Charlotte, NC 28207

Ryan A Daly

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