Effective gross income is a borrower's normal annual income, used by mortgage and other lenders as the primary measure of earnings when qualifying a loan application. Salary is usually its principal component, but other income sources can be included if the lender determines they are regular, stable and likely to continue.
The definition matters because it determines how much income a lender will actually count toward a borrower's debt-to-income ratio, which in turn determines how large a loan the borrower can qualify for — income that cannot be documented as stable is typically excluded or only partially counted.
Effective gross income in plain terms
Not every dollar a borrower earns necessarily counts toward qualifying for a loan. A base salary almost always counts in full, but a one-time bonus, irregular freelance income, or overtime that is not contractually guaranteed may be discounted or excluded entirely, because lenders want to be confident the income used to qualify a loan will actually continue to be received in the future.
This is why two borrowers with the same total annual earnings can qualify for very different loan amounts, if one borrower's income is mostly stable salary and the other's is mostly irregular commission or bonus income.
What is typically included
Base salary and wages are almost always included in full; regular, documented overtime or commission with a consistent two-year history is often included, typically averaged over that history rather than taken at a recent peak; and guaranteed income sources such as pensions or certain government benefits are generally counted as well.
What is typically excluded or discounted
Irregular bonuses without a clear pattern, income from a side activity without a documented track record, and overtime not guaranteed to continue are commonly excluded or heavily discounted, since lenders are specifically assessing the reliability of future income, not simply total past earnings.
Effective gross income and loan qualification
Lenders apply their debt-to-income ratio thresholds against effective gross income to determine the maximum loan payment a borrower can qualify for, making the definition of what counts as effective gross income directly consequential for how much house, car or other financed purchase a borrower is approved to buy.
Documentation requirements for counted income
Lenders generally require at least two years of consistent documentation, such as tax returns or employer verification letters, before counting variable income like overtime, commission or bonus pay toward effective gross income, and a sudden recent increase in such income, even if genuine, may still be discounted until it has built up a longer track record on paper.
Effective gross income for self-employed borrowers
Self-employed applicants typically have their effective gross income calculated from net business income shown on tax returns rather than gross business revenue, after lenders add back certain non-cash deductions such as depreciation, a process that can meaningfully differ from how the borrower's own accountant might describe their take-home income for tax-minimization purposes.
Effective gross income and co-borrower income
When a loan application includes more than one borrower, lenders generally combine each qualifying borrower's own effective gross income before applying debt-to-income thresholds, though every borrower listed on the application typically also becomes personally liable for the full loan, a tradeoff worth understanding before adding a co-borrower purely to boost the combined qualifying income figure.
Effective gross income and rental property income
Lenders evaluating a borrower who owns rental property generally count only a portion of the gross rental income toward effective gross income, commonly applying a standard vacancy and expense discount such as 75 percent of gross rents, reflecting the reality that rental income is inherently less certain than a stable salary from ongoing employment.