Debt-to-Income Ratio Calculator (2026)
Divide your monthly debt payments by your gross monthly income to get the ratio lenders look at first.
Calculate Your Debt-to-Income Ratio
Your pay before taxes and deductions, including salary, bonuses, and regular side income.
Rent, or mortgage principal and interest plus property taxes, insurance, and HOA dues.
Auto loan or lease payment. Car insurance is not a debt payment, so leave it out.
The minimum payments across all cards, not your total balances.
Personal loans, child support, alimony, and any other recurring required debt payments.
Estimates only — not financial advice. Lenders also weigh your credit score, reserves, and employment history.
What Is a Debt-to-Income Ratio?
Your debt-to-income ratio, or DTI, is the share of your gross monthly income that goes toward required debt payments. Lenders use it as a quick test of whether you can take on a new payment without being stretched too thin. There are two versions: the front-end ratio covers housing only, and the back-end ratio covers all recurring debts. Most mortgage decisions rest mainly on the back-end ratio, while the front-end ratio is a secondary check.
The 28/36 Guideline
The classic lending guideline is 28/36: housing costs at most 28% of gross income, and total debt payments at most 36%. Hitting both numbers puts you in the preferred range for most conventional mortgages. Exceeding 36% does not automatically disqualify you, but it means lenders will look harder at compensating factors such as a strong credit score, cash reserves, or a long stable employment history.
The DTI Formula
The formula is simple division. Add up every required monthly debt payment, then divide by your gross monthly income and multiply by 100. For the front-end ratio, use only the housing payment in the numerator.
Back-end DTI = total monthly debt payments / gross monthly income x 100
Maximum housing at 36% back-end = gross monthly income x 0.36 minus other monthly debts
Worked Example: The Default Numbers
| Calculation | Amount | |
|---|---|---|
| Gross monthly income | $6,000 | |
| Housing payment | $1,800 | |
| Car payment | $350 | |
| Student loan payment | $150 | |
| Credit card minimums | $100 | |
| Other debt payments | $0 | |
| Total monthly debts | $1,800 + $350 + $150 + $100 + $0 | $2,400 |
| Front-end DTI | $1,800 / $6,000 x 100 | 30.0% |
| Back-end DTI | $2,400 / $6,000 x 100 | 40.0% |
| Maximum housing at 36% back-end | $6,000 x 0.36 − $600 | $1,560 |
The front-end ratio of 30.0% sits just above the 28% guideline, and the back-end ratio of 40.0% sits above the 36% preferred ceiling. To reach a 36% back-end ratio with the same $600 of non-housing debts, housing would need to fall to $1,560 a month, a cut of $240. Paying down a car loan or a credit card balance can have the same effect without moving house.
What Lenders Actually Accept in 2026
The old rule that a mortgage could never exceed a 43% DTI is outdated. The Consumer Financial Protection Bureau’s original Qualified Mortgage rule did use a 43% DTI cap, but the revised price-based General QM rule, effective March 1, 2021, removed the fixed 43% cap. Lenders must still consider and verify your DTI, but there is no longer a hard 43% ceiling under the General QM rule. That change is why you should not treat 43% as a current hard cap.
What matters now is the program and the compensating factors. Fannie Mae’s automated underwriting system accepts back-end ratios up to 50% when compensating factors are present, such as strong credit, substantial reserves, or minimal payment shock. For FHA loans, the standard manual underwriting guideline is 31% front-end and 43% back-end, although automated approvals can go higher with compensating factors. In practice, a ratio under 36% is preferred, 37% to 43% is commonly accepted, 44% to 50% is possible with strong compensating factors, and above 50% is difficult for most borrowers.
DTI Guideline Bands
| Back-end DTI | What it usually means |
|---|---|
| At most 36% | Preferred range. Meets the classic 28/36 guideline and the easiest approvals. |
| 37% to 43% | Acceptable with compensating factors such as good credit or solid reserves. |
| 44% to 50% | Possible with strong compensating factors, commonly through Fannie Mae automated approval. |
| Above 50% | Difficult. Most lenders will require exceptional compensating factors or a smaller loan. |
How to Lower Your DTI
- Pay down small debts first. Clearing a $100 minimum payment raises your borrowing room by exactly that amount, and it can be faster than paying down a large loan.
- Refinance or extend a loan. A lower rate or longer term cuts the monthly payment, which lowers the numerator of the ratio.
- Raise your documented income. A raise, a second job, or regular freelance income counts once it is documented and stable, and it lowers the ratio from the other side.
- Avoid new debts before applying. A new car payment or card balance right before a mortgage application raises your DTI at the worst possible moment.
- Do not count the wrong things. Groceries, utilities, subscriptions, and insurance premiums are living costs, not debts, and lenders do not include them in DTI.
