How to Calculate Debt to Income Ratio

Debt-to-Income (DTI) Ratio Calculator

Include salary, bonuses, and other consistent income sources.

Your DTI Ratio is:


Understanding the Debt-to-Income (DTI) Ratio

Your Debt-to-Income (DTI) ratio is a crucial financial metric used by lenders, especially mortgage providers, to determine your ability to manage monthly payments and repay debts. It compares your total monthly debt obligations to your gross monthly income.

How to Calculate Debt to Income Ratio

The math behind DTI is straightforward. You sum all your mandatory monthly debt payments and divide that total by your gross monthly income (your pay before taxes and deductions are taken out).

DTI = (Total Monthly Debt / Gross Monthly Income) x 100

A Realistic Example

Let's look at a typical scenario:

  • Gross Monthly Income: $6,000
  • Monthly Expenses:
    • Rent: $1,200
    • Car Loan: $350
    • Student Loan: $250
    • Credit Card Minimum: $100
  • Total Monthly Debt: $1,900

In this case, the calculation would be: ($1,900 รท $6,000) = 0.316, or 31.6% DTI.

What is a Good DTI Ratio?

Lenders generally categorize DTI ratios as follows:

  • 35% or Less (Excellent): You have a healthy balance between debt and income. Most lenders see you as low-risk.
  • 36% to 43% (Good/Acceptable): This is the standard range for most conventional mortgage approvals. You may still qualify for various loan products.
  • 44% to 50% (High Risk): You are approaching a level where financial flexibility is limited. Some specialized loans may still be available.
  • Above 50% (Struggling): More than half of your income goes to debt. It will be very difficult to secure new credit or handle unexpected expenses.
function calculateDTI() { var grossIncome = parseFloat(document.getElementById('grossIncome').value) || 0; var housing = parseFloat(document.getElementById('housingDebt').value) || 0; var car = parseFloat(document.getElementById('carDebt').value) || 0; var student = parseFloat(document.getElementById('studentDebt').value) || 0; var credit = parseFloat(document.getElementById('creditDebt').value) || 0; var other = parseFloat(document.getElementById('otherDebt').value) || 0; var resultDiv = document.getElementById('dtiResult'); var ratioValue = document.getElementById('ratioValue'); var dtiAnalysis = document.getElementById('dtiAnalysis'); if (grossIncome <= 0) { alert("Please enter a valid gross monthly income greater than zero."); return; } var totalDebt = housing + car + student + credit + other; var dtiRatio = (totalDebt / grossIncome) * 100; var formattedRatio = dtiRatio.toFixed(1) + "%"; ratioValue.innerHTML = formattedRatio; resultDiv.style.display = "block"; if (dtiRatio 35 && dtiRatio 43 && dtiRatio <= 50) { resultDiv.style.backgroundColor = "#fce4ec"; resultDiv.style.border = "1px solid #f8bbd0"; dtiAnalysis.style.color = "#c2185b"; dtiAnalysis.innerHTML = "High. You may find it difficult to qualify for certain loans. Consider paying down high-interest balances."; } else { resultDiv.style.backgroundColor = "#f8d7da"; resultDiv.style.border = "1px solid #f5c6cb"; dtiAnalysis.style.color = "#721c24"; dtiAnalysis.innerHTML = "Very High. Over half your income goes toward debt. Lenders may view this as high risk, and your financial flexibility is limited."; } }

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