Debt-to-Income (DTI) Ratio Calculator

DTI is the percentage of your gross monthly income that goes toward monthly debt payments. Lenders use it to assess your ability to take on additional debt. If you earn $7,500/month gross and your total debt payments are $2,250/month, your DTI is 30%. The lower the number, the more financially flexible you appear to lenders.

Below 36% is considered ideal. Up to 43% is acceptable for most conventional mortgages — that's the federal Qualified Mortgage threshold. FHA loans can sometimes go to 50% with compensating factors (high credit score, large reserves). Above 50% makes qualifying for most major loans difficult, and lenders may require you to pay down debt before approval.

It depends on which DTI: the front-end DTI (housing-only) includes just your housing payment; the back-end DTI (the one most lenders care about) includes ALL monthly debt — housing, auto, student loans, credit card minimums, personal loans, and child support or alimony. This calculator computes back-end DTI, which is the standard for mortgage qualification.

Required minimum monthly payments only. Include: mortgage or rent, auto loans, student loans, credit card minimums, personal loans, HELOCs, child support, alimony. Do NOT include: utilities, groceries, gas, insurance premiums (unless escrowed with mortgage), 401(k) contributions, taxes withheld, or subscription services. Discretionary spending doesn't count even if you regularly pay it.

Always gross (pre-tax) income. This is the standard lenders use because tax situations vary widely. If you're salaried at $90,000/year, your gross monthly income is $7,500. If you're self-employed, lenders typically average the last 2 years of tax-return income (line 31 of Schedule C or net business income). 1099 income usually requires 2+ years of history.

Two paths: increase income or decrease debt. Quick wins on the debt side: pay off credit cards or small personal loans entirely (eliminates the whole payment, not just reduces it), refinance high-rate debt into lower-rate debt, sell a financed car and replace with cash purchase. Income wins: ask for a raise, take on a second job (though lenders require 2 years of side income history to count it), or wait until your spouse can document their income.

Not as a federal rule, and this is the most common piece of outdated advice in the topic. The 43% limit came from the CFPB's original General Qualified Mortgage definition, but the General QM Final Rule removed it and replaced it with price-based thresholds that compare a loan's APR against the Average Prime Offer Rate. Since then, 43% has not been a federal line separating qualified from unqualified mortgages. What still applies are program-level standards — conventional, FHA, VA, USDA and jumbo each set their own limits — and lenders must still verify income, debts and either DTI or residual income.

HUD's handbook sets typical maximums of 31% for the housing ratio and 43% for total DTI, but borrowers with a credit score of 580 or above and compensating factors can be approved considerably higher — automated underwriting approvals commonly reach 50% and occasionally beyond. FHA is generally the most forgiving mainstream program on DTI, which is why it is often the route for borrowers whose ratio rules out conventional financing.

VA typically works to around 41%, but DTI is not the primary test — residual income is. VA underwriting checks whether enough money remains each month after all obligations, using regional tables that vary by family size and location, and a borrower with strong residual income can be approved well above 41%. USDA is stricter, working to roughly 29% front-end and 41% back-end through its automated system, with limited room for exceptions.

Front-end DTI counts only your housing payment against gross income. Back-end DTI counts every required monthly debt payment — housing, auto, student loans, credit card minimums, personal loans, child support and alimony. Back-end is the figure most lenders lead with, but FHA and USDA assess both, so a borrower can clear the back-end limit and still be declined on the housing ratio. This calculator shows both.

Lenders generally average the last two years of tax-return income rather than using gross receipts, so the figure they work from is usually lower than what you would consider your income. For a sole proprietor that means net business income from Schedule C; for 1099 contractors, two or more years of documented history is normally required. Certain deductions can be added back, depreciation being the common one, which is why an accountant-prepared return can materially change what you qualify for. If your income is variable, ask a lender to run the calculation before you rely on your own estimate.

Yes — when applying for a mortgage, the new housing payment (principal, interest, taxes, insurance, and HOA fees if any) replaces your current rent in the calculation. This is your projected post-purchase DTI. Lenders calculate both: current DTI to assess your existing situation, and post-purchase DTI to verify you can afford the new loan.

DTI itself doesn't appear on credit reports and doesn't directly affect your FICO or VantageScore. However, the components that drive a high DTI — large credit card balances, multiple loan accounts — DO affect your credit utilization and account mix, which together account for nearly 40% of your credit score. So lowering DTI usually improves credit score as a side effect.

Sometimes. With excellent credit (760+), substantial cash reserves (6+ months of payments saved), large down payment (20%+), or a stable long-term job, lenders may approve DTI up to 50%. FHA loans are most flexible — they go to 50% with manual underwriting. VA loans for eligible veterans can sometimes exceed 50%. Expect higher rates and stricter scrutiny when DTI is above 43%.