Your DTI is the percentage of your gross monthly income that goes toward monthly debt payments.
That includes things like credit cards, car loans, student loans, personal loans, and your future house payment, but not everyday expenses like groceries or utilities.
Lenders typically look at:
Front-end DTI: just your housing costs (principal, interest, taxes, insurance).
Back-end DTI: housing plus all your other monthly debts.
Lenders use DTI as a quick snapshot of how easily you can handle a new mortgage payment on top of everything else you owe.
If your DTI is too high, it signals higher risk that you could struggle with payments, so you may be denied or approved only with less-favorable terms.
In general, many lenders like to see total DTI around 36% or lower, and often won’t go above about 43%–45%, depending on loan type and the rest of your financial picture.
Your DTI can impact:
Whether you’re approved at all for a mortgage.
How much house you qualify for (your maximum purchase price).
Your interest rate and which loan programs you’re eligible for—lower DTI can open more doors and better pricing.
For example, some conventional loans cap DTI around the mid-40% range, while certain government-backed loans may allow higher DTIs if you have strengths like good credit or extra savings.
Say you make 5,000 per month before taxes and your total monthly debts (car, credit cards, student loan, and proposed house payment) are 2,000.
You’d calculate DTI as 2,000 ÷ 5,000 = 0.40, or 40%—which is on the higher side, but still within the range some loan programs will allow.
Keeping your DTI in a healthy range gives you more control: you can often qualify more easily, have better loan choices, and feel less stretched once you’re in the home.
If you’re thinking about buying soon, paying down high-interest debts, avoiding new loans, and knowing your numbers before you shop can all help your DTI—and your overall homebuying experience.