To you, income is income. To a lender, it's a much narrower thing — and one of the most common reasons a qualified-feeling borrower gets a surprising answer. The guidelines also genuinely vary from lender to lender, so it pays to understand how this works.
The three questions a lender asks
Before counting a single dollar of income, an underwriter is really asking three things: is it stable, is it documented, and is it likely to continue — usually for at least three years? Income that passes all three counts. Income that fails one gets reduced, or ignored.
What's commonly accepted
- W-2 wages and salary — the cleanest case.
- Self-employment income — usually with two years of tax returns, averaged.
- Bonus, overtime, and commission — typically need a history (often two years) and get averaged.
- Retirement, pension, Social Security, and disability — generally countable, and sometimes "grossed up" since part may be untaxed.
- Rental income — with the right documentation (leases, tax returns).
- Child support and alimony — if it's likely to continue (more on that in its own piece).
The income that gets tricky
A brand-new job, a recent graduate's first role, gig and 1099 work without history, seasonal income, restricted stock, or foreign income can all need more history or documentation — or get discounted — before a lender will lean on it.
The disclaimer that actually matters here
Not all lenders follow the same guidelines. The agencies — Fannie Mae, Freddie Mac, FHA, VA — set a baseline, but individual lenders layer their own overlays on top, and portfolio lenders write their own rules entirely. The practical result: two lenders can count the exact same income differently. A "we can't use that" from one lender is not a universal verdict.
The move
Document everything you can, ask your loan officer specifically how they'll treat each type of income you have, and if one lender won't count income you know is stable, get a second opinion. The variation between lenders is real, and it can be the difference between approved and declined.
Income guidelines vary by loan program and by individual lender overlays, and they change over time — confirm how your specific income will be treated with your loan officer.