Debt to Income Ratio:
The debt to income ratio will vary based on your own financial situation. The debt to income ratio calculator is for guidance only.
Table of Contents
Debt-to-income, in one sentence
Debt-to-income (DTI) ratio is the percentage of your gross monthly income that goes toward recurring debt payments — it's the single biggest number underwriters look at when deciding whether you qualify for a mortgage, personal loan, or refinance.
How DTI is calculated
The formula is simple division, but the inputs matter:
DTI = (Total Monthly Debt Payments ÷ Gross Monthly Income) × 100
- Gross monthly income — pre-tax income from salary, wages, self-employment, alimony, child support, Social Security, pensions, and verified investment income.
- Total monthly debt payments — rent or mortgage (PITI: principal, interest, taxes, insurance), car loans, student loans, minimum credit card payments, personal loans, alimony, child support.
- Not included — utilities, groceries, gas, health insurance premiums (unless escrowed), cell phone, streaming services, daycare, savings contributions.
Worked example using the calculator's defaults ($60,000 salary, $1,800 rent, $80 utilities, $200 transportation):
- Gross monthly income = 60,000 ÷ 12 = $5,000
- Qualifying debt payments = $1,800 rent (utilities and transportation aren't debt obligations and lenders don't count them in DTI)
- DTI = (1,800 ÷ 5,000) × 100 = 36%
That's right at the conservative lender benchmark. The calculator's default scenario reflects a household that could qualify for most mortgages but has limited room to take on new debt.
DTI thresholds — what lenders look for
| DTI range | Lender view | What it means for you |
|---|---|---|
| Under 20% | Excellent | Best rates available; ample room for new debt. |
| 20% – 35% | Healthy | Most loans approved at competitive rates. |
| 36% – 43% | Acceptable | Conforming mortgages usually OK; rates may be slightly higher. |
| 43% – 50% | Stretched | Conforming QM loans typically denied; FHA possible with compensating factors. |
| Over 50% | High risk | Few mainstream lenders will approve; signs of financial stress. |
The 43% cap on conforming mortgages comes from the federal qualified mortgage (QM) rule established under Dodd-Frank, designed to limit the kind of overextension that fueled the 2008 housing crisis.
Front-end vs back-end DTI — the 28/36 rule
Mortgage underwriters look at two DTI numbers:
- Front-end DTI (housing ratio). Monthly housing costs (PITI) divided by gross income. Conservative benchmark: under 28%.
- Back-end DTI (total DTI). All monthly debt payments (housing + everything else) divided by gross income. Conservative benchmark: under 36%; federal QM cap: 43%.
The "28/36 rule" is the conservative lender guideline: keep front-end under 28% and back-end under 36%. Different loan programs use different caps:
| Loan type | Typical front-end | Typical back-end |
|---|---|---|
| Conventional / conforming | 28% | 36% (up to 45% with good credit) |
| FHA | 31% | 43% (up to 50% with compensating factors) |
| VA | No strict cap (residual income test) | 41% benchmark |
| USDA | 29% | 41% |
| Jumbo (non-QM) | Varies | 43–45% |
How to lower your DTI before applying for a loan
You have two levers: shrink debts or grow income. In rough order of impact and speed:
- Pay off small revolving balances entirely. Closing a $1,500 credit card balance eliminates the $30–$45 minimum payment from your DTI — bigger numerator impact than the dollar amount suggests.
- Avoid new credit applications. Each new account adds a minimum payment to your DTI and a hard inquiry to your credit report. Stop applying 6–12 months before a mortgage application.
- Refinance high-rate debt to a longer term. Lowers the monthly payment (good for DTI) but increases total interest paid (bad long-term).
- Document side income. 1099 income, rental income, alimony, child support — if you have a 2-year history, underwriters can count it. Get the documentation in order before applying.
- Pay down auto loans. Paying off a car loan that has fewer than 10 monthly payments left can often be excluded from DTI by underwriters — ask your lender's underwriting guidelines.
- Add a co-borrower. A spouse or family member with strong income and low debt can pull your combined DTI down dramatically.
Limitations of this calculator
- This calculator's DTI definition is broader than lender DTI. The form asks for utilities, insurance, and other recurring expenses, which lenders don't count in DTI. The output is closer to a total-expenses-to-income ratio than a strict underwriter DTI. For mortgage qualification, use the 36% benchmark against only your debt obligations (housing + loans + credit cards + child support/alimony).
- Pre-tax income. DTI uses gross income, not take-home. Households with high tax burdens (high state tax, large 401(k) contributions, ACA insurance premiums) may have less cash flow than their DTI suggests.
- Self-employment averaging. Underwriters typically average 2 years of 1099 or self-employment income. A high recent year alone won't qualify.
- Doesn't model future obligations. The DTI you calculate today doesn't include the new mortgage payment you're applying for — lenders will recompute with the new payment included.
Sources & references
- Consumer Financial Protection Bureau — What is a debt-to-income ratio? — official CFPB consumer guidance.
- CFPB Regulation Z (12 CFR §1026.43) — qualified mortgage rule, including the 43% back-end DTI cap.
- HUD — FHA Single Family Housing Policy Handbook — FHA underwriting guidelines including DTI thresholds.
- VA — Lender's Handbook — VA loan underwriting standards including residual income tests.
- US Federal Reserve — Consumer Credit (G.19) — current US household debt trends.
FAQs
DTI = (Total Monthly Debt Payments ÷ Gross Monthly Income) × 100. Gross income is pre-tax. Monthly debt payments include rent or mortgage (including taxes and insurance for a mortgage), car loans, student loans, minimum credit card payments, child support, and alimony. They do not include utilities, groceries, insurance premiums (other than escrowed homeowners insurance), or other discretionary expenses.
Front-end DTI (also called the housing ratio) is just your housing costs divided by gross monthly income — lenders typically want this under 28%. Back-end DTI is total debt payments (housing plus all other recurring debt) divided by gross income, with a typical cap of 36–43%. Mortgage underwriters look at both; the 28/36 rule is the conservative benchmark, while qualified mortgage (QM) rules cap back-end DTI at 43% for most conforming loans.
Yes, significantly. Under federal qualified mortgage (QM) rules, conforming loans generally cap back-end DTI at 43%. FHA loans allow up to about 50% with compensating factors (high credit score, reserves). VA loans use a residual income test in addition to DTI. Higher DTI doesn't just mean denial — it can also push you into higher interest rates, larger down payment requirements, or private mortgage insurance.
Two levers: shrink the numerator (debts) or grow the denominator (income). Fastest wins: pay off small revolving balances entirely (frees up the minimum payment), avoid new credit applications for 6+ months before you apply, and ask for documentation of any side income (1099s, rental income, alimony) that underwriters will count. Refinancing high-rate debt to a longer term lowers the monthly payment and DTI but raises total interest cost — a tradeoff.
No — DTI is not used directly in FICO or VantageScore calculations because lenders don't report your income to the credit bureaus. However, the behaviors that improve DTI (paying down balances, especially revolving credit cards) also improve your credit utilization ratio, which is a major scoring factor. So DTI and credit score tend to move in the same direction even though they're computed differently.