Debt-to-income questions

Debt-to-income (DTI) is the share of your gross monthly income that already goes to recurring debt. Lenders use it as a quick read on whether a new housing payment still leaves room to repay other obligations.

Front-end DTI (the housing ratio) is housing costs divided by gross monthly income. Back-end DTI (the total or backend ratio) adds other monthly debts — auto loans, student loans, credit card minimums, and similar obligations — on top of housing.

A conventional file is often discussed against a 28% front-end and 36% back-end guideline. FHA's published ratios are typically 31% and 43%. Many approvals land higher when credit, reserves, or automated underwriting support the file. DTICheck shows those bands; it does not underwrite a loan.

Use the proposed monthly housing payment: principal and interest, property taxes, homeowners insurance, mortgage insurance if any, and HOA or condo dues. Rent you will stop paying after closing is not added on top of the new payment.

Include installment loans, auto payments, student loans, credit card minimums, personal loans, and court-ordered support. Everyday living costs — groceries, utilities, cell phone, childcare that is not a debt — usually stay out of the DTI math even though they still matter to your budget.

Published mortgage DTI uses gross monthly income before taxes and most payroll deductions. That is why a ratio that looks manageable on paper can still feel tight against a paycheck.

Sometimes. Automated underwriting and compensating factors — stronger credit, cash reserves, residual income, or a larger down payment — can support a higher back-end DTI. There is no public guarantee. Only a lender can say what their program will accept.

Pay down revolving balances so the minimums drop, finish small installment loans, avoid new credit, and document stable extra income. Raising income or choosing a lower housing target also moves the ratio. See the How to lower DTI guide for a step-by-step list.

No. DTICheck is an educational calculator that runs in your browser. It does not pull credit, store your numbers on a server, or issue a pre-approval.

Lenders may treat student loans, business income, boarder income, or deferred obligations differently. They also verify paystubs, tax returns, and credit-report minimums. Treat DTICheck as a planning estimate, not underwriting.