Use our free debt-to-income (DTI) calculator to find out if you qualify for a mortgage. DTI is the single biggest factor lenders use to decide whether to approve you, what loan amount you can carry, and what rate they will offer. We compute both your front-end (housing-only) and back-end (total debt) DTI in seconds and benchmark them against typical Conventional, FHA, and VA limits. See your number, learn what it means for a conventional loan, FHA loan, or VA loan, then run our home affordability calculator.
Total before taxes & deductions
Includes Principal, Interest, Taxes, Insurance & HOA
It includes only your minimum monthly debt payments - things like utilities, groceries, or car insurance are not included
Standard max is 45%, but strong credit/reserves can push it to 50%.
Very flexible - depending on the overall file, DTI can go as high as 57% with the right compensationg factors in place.
The standard guideline sits around 41%, but approvals can stretch up to 55% if theres strong residual income and the file runs through automated underwriting
Manual underwriting is more strict, typically capped at 29/41, though automated approvals can sometimes push slightly beyond that range
Calculators online only give you a rough idea. In reality, loan officers know how to structure a file - using bonus income correctly, applying program flexibility, and even rearranging debts - to help get you approved. Our complete pre-approval guide walks through the whole flow.
What may cause the lenders to deny your loan is if your Back-End DTI is getting close to that 50% range. The good news is there are ways to improve your ratio before you apply — and our breakdown on paying off debts during underwriting covers what helps and what backfires.
It is not about how much you owe - it is about what you pay monthly. For example, paying off a $5,000 car loan with a $400/month payment will improve your DTI much more than paying off $5,000 in student loans with a $50/month payment. Our mortgage payoff calculator shows how extra principal compounds over time.
Adding a spouse or even a co-borrower can make a big difference. Their income gets added into the equation, which helps offset the total debt and can significantly lower your overall DTI.
Buying down your rate - either out of pocket or negotiated through seller concessions - can reduce your monthly mortgage payment. This directly improves both your front-end and back-end ratios right away. Use our monthly payment calculator to compare scenarios. Investors with non-traditional income should look at the DSCR loan route.

Not sure what actually counts as income or debt? Thats where we come in - our team can walk you through it and break it down based on your exact situation
Compliance Note: This DTI calculator is meant to give you an estimate based on the information you input. Actual lender calculations may vary depending on underwriting guidelines, how income is calculated (including rental or variable income), and how debts are evaluated through automated systems. This is not a commitment to lend or a loan approval