Use the right ratio
Debt-to-income ratio, or DTI, compares monthly debt obligations with gross monthly income. It is different from loan-to-value, which compares mortgage borrowing with property value. “Loan-to-debt” is not the standard name for the mortgage affordability measure.
To make a preliminary DTI calculation, divide counted monthly debt payments by gross monthly income and express the result as a percentage. The lender must determine which payments and income qualify under the selected program. CFPB: Debt-to-income ratio.
Build the debt side carefully
Start with the proposed housing obligation, including the applicable taxes, insurance, mortgage insurance and association charges. Add the debts required by the program, such as credit-card payments, installment loans and other obligations. Use required monthly payments rather than adding entire outstanding balances.
Student loans, deferred obligations, support payments, debts paid by another person and a departing residence may have specific treatment. Tell the lender about them even if they are absent from a consumer credit app. An omitted payment can change the review late in the process.
Gross pay is not always qualifying income
A salary is relatively simple to identify, but bonuses, overtime, commission, self-employment, rental income and recently started work need program-specific analysis. A new side job does not immediately become usable mortgage income merely because money has arrived in the bank.
Ask what history and documentation the lender needs and which income it has accepted. For a joint application, make sure the income and obligations correspond to the actual borrowers. Comparing debts from one person with income from someone outside the loan can produce a misleading estimate.
A limit is not the whole decision
There is no universal DTI ceiling that applies to all conventional, FHA, VA or USDA loans and every underwriting method. Program rules, automated findings, lender requirements and the broader file affect the result. Ask for the rule relevant to the proposed loan rather than relying on a generic approval chart.
A ratio that qualifies can still leave a household short of cash. DTI uses gross income and does not capture every living expense. Build a separate after-tax budget for childcare, transportation, food, health costs, maintenance and savings. CFPB: Qualification and affordability.
Improve the plan without draining reserves
Review a less expensive property, a different available term or debt repayment with the loan professional. Before paying down an account, confirm how it changes the counted payment and what documentation is needed. Keep enough verified funds for closing and reserves.
Avoid new obligations during the application without discussing the effect. A proposed furniture payment or vehicle loan can matter even if the first payment is deferred. ECHL can help identify the questions for underwriting and compare financing choices; the lender makes the final determination.
Sources & further reading
- Consumer Financial Protection Bureau — what is a debt to income ratio en 1791
- Consumer Financial Protection Bureau — what is a mortgage en 99
This article is maintained by Equity Capital Home Loans. Program rules can change. Confirm the requirements for your property and loan before making a decision.