Household Income

When two earners apply together, lenders add both incomes and both debt loads to compute DTI. Dual-income qualification usually lifts buying power, since more income can support a larger payment. Only the earnings actually used to qualify count, so a non-applicant’s income may sit outside the calculation.

The tradeoff is fragility. A payment sized to two paychecks can become a strain if one income disappears through job loss, illness, or a career break. Childcare and commuting costs tied to the second job can also offset much of the income it adds. Sizing the payment so it remains manageable on a reduced income is a common way to build in resilience. What works depends on your situation.