What is a debt-to-income ratio?
Your DTI ratio is the percentage of your gross monthly income that goes toward paying debts. Lenders use it to assess how much additional debt you can handle. A lower DTI shows lenders you have a healthy balance between income and debt.
Front-end vs. back-end DTI
The front-end ratio (or housing ratio) includes only your housing costs — mortgage principal and interest, property taxes, homeowners insurance, and HOA fees. Most lenders want this below 28%. The back-end ratio includes all monthly debt obligations. Most lenders want this below 36–45%.
How to lower your DTI
The fastest ways are to pay off smaller debts entirely (which removes their monthly payment from your DTI), avoid taking on new debt before applying, or increase your income. You can also choose a less expensive home to reduce your housing payment. Our debt payoff calculator can help you prioritize which debts to eliminate first.
DTI and mortgage qualification
Your DTI is one of the most important factors in mortgage approval. Use this alongside our mortgage calculator and affordability calculator to find a home price that keeps your DTI in lender-friendly territory.
A real example
Say you earn $7,000/month gross, pay $1,800 in rent or mortgage plus $300 in taxes, insurance, and HOA (a $2,100 front-end), and carry a $350 car payment, $200 student loan, and $100 minimum credit card payment ($650 in other debt). Your front-end DTI is 30% ($2,100 ÷ $7,000) — just above the conventional 28% guideline — and your back-end DTI is 39% ($2,750 ÷ $7,000), which fits within conventional (45%) and FHA (57%) limits but is tighter for VA or USDA loans (41%). Paying off that $350 car loan alone would drop your back-end DTI to about 34%, moving you into excellent territory.
What counts as debt (and what doesn't)
Lenders count recurring, reported debt obligations: mortgage or rent, auto loans, student loans, minimum credit card payments, personal loans, and child support or alimony. They generally don't count everyday expenses like groceries, utilities, subscriptions, or most insurance premiums, and debts set to be paid off within about 10 months are often excluded too. That's why your DTI can feel disconnected from how tight your budget actually feels day to day — it's a lending metric, not a full household budget.