Debt-to-Income Ratio Calculator
Calculate your debt-to-income ratio and see how lenders will evaluate your borrowing capacity.
Results
Visualization
How It Works
The Debt-to-Income Ratio Calculator helps you determine what percentage of your gross monthly income goes toward debt payments, which lenders use to evaluate your creditworthiness and borrowing capacity. A lower DTI ratio indicates you have more financial flexibility and are less risky to lenders, while a higher ratio may limit your ability to qualify for new loans or mortgages. This tool is designed for both quick estimates and detailed planning scenarios. Results update instantly as you adjust inputs, making it easy to compare different approaches and understand how each variable affects the outcome. For best accuracy, use precise measurements rather than rough estimates, and consider running multiple scenarios to establish a realistic range of expected results.
The Formula
Variables
- Gross Monthly Income — Your total monthly earnings before taxes and deductions. Include salary, wages, bonuses, rental income, or other regular income sources.
- Mortgage / Rent — Your monthly housing payment, whether you own (mortgage) or rent. This is typically your largest monthly debt obligation.
- Car Payment — Monthly payment on any vehicle loans or leases you're responsible for.
- Student Loan Payment — Monthly payment on federal or private student loans. Use your actual payment amount, even if in deferment.
- Credit Card Payments — Minimum monthly payments on all credit cards. If you pay in full each month, use your average monthly balance.
- Other Debt Payments — Monthly payments on personal loans, medical debt, child support, or any other recurring debt obligations.
Worked Example
Let's say you earn $5,000 gross monthly income. Your mortgage is $1,200, car payment is $350, student loan payment is $200, credit card minimum is $150, and you have a personal loan payment of $100. Your total monthly debt is $1,200 + $350 + $200 + $150 + $100 = $2,000. Your DTI ratio is ($2,000 / $5,000) × 100 = 40%. This means 40% of your gross income goes toward debt payments. Most lenders prefer a DTI below 36%, so at 40%, you may face challenges qualifying for additional credit and should focus on paying down existing debt before taking on new obligations.
Practical Tips
- Include all recurring debt payments in your calculation, even if sometimes paid automatically. People often forget about subscription services with auto-pay or small loan payments, which can quietly raise your DTI.
- Use your gross income (before taxes), not net income (after taxes). Lenders evaluate your ability to pay based on earnings before tax withholding, as taxes are already factored into their lending standards.
- If you're self-employed or have variable income, use an average of your last 2 years to get a more realistic picture. This protects you from overestimating your capacity during high-income months.
- Pay attention to the DTI rating output—this gives you context on how lenders will view your financial health. A ratio under 36% is considered excellent; 36-43% is acceptable but risky; above 43% will likely result in loan denial.
- Remember that your max recommended housing payment is calculated conservatively (typically 28% of gross income). If you're currently above this, prioritize paying down other debts first before purchasing a home.
Frequently Asked Questions
What is a good debt-to-income ratio?
Most lenders consider a DTI ratio below 36% as good and prefer it for mortgage approval. A ratio between 36-43% is acceptable but may result in higher interest rates or stricter loan terms. Above 43%, most traditional lenders will deny new credit applications. The lower your DTI, the more financial flexibility you have and the better loan terms you'll qualify for.
Do lenders count rent as debt in the DTI calculation?
Yes, lenders absolutely count rent payments as part of your monthly debt obligations. This is why renters often have lower DTI ratios than mortgage holders with similar incomes, since rent is typically lower than a mortgage payment for the same property. When you apply for a mortgage, lenders will factor in your current rent payment as debt to determine your borrowing capacity.
How can I lower my debt-to-income ratio quickly?
You have two levers: increase income or decrease debt. Increasing income through a raise or side gig directly lowers your DTI percentage. Paying down debt—especially high-balance items like credit cards and personal loans—reduces your total monthly obligations. Paying off your smallest debts first can give you psychological wins while aggressively paying larger balances reduces your DTI faster.
Will my student loan payments affect my ability to get a mortgage?
Yes, student loan payments significantly impact your DTI ratio and will reduce the mortgage amount you qualify for. If you're in deferment or forbearance, lenders typically still count an estimated payment based on your loan balance. As your student debt decreases over time, your DTI improves, making you eligible for larger mortgages or better interest rates.
Does closing paid-off credit cards help my DTI ratio?
Closing credit cards doesn't directly improve your DTI ratio since closed accounts with zero balance don't add to your monthly debt. However, keeping paid-off cards open can help your credit score by maintaining available credit lines, which may improve the interest rates offered to you. Focus on paying down active debts rather than closing accounts for DTI improvement.
Sources
- Federal Reserve: What You Should Know About Your Mortgage
- Consumer Financial Protection Bureau: Borrowing Money
- U.S. Department of Housing and Urban Development: Understanding Your Debt-to-Income Ratio