The QBI deduction, formally the Section 199A qualified business income deduction, lets eligible landlords deduct up to 20 percent of their net rental profit before they figure federal income tax. It applies only when your rental activity rises to a trade or business, and it sits on top of every other deduction you already take on your rental income.
In practice
Say your rental activity qualifies and, after rent, repairs, insurance, mortgage interest, and depreciation, your net profit on Schedule E for the year is $14,000. The QBI deduction is 20 percent of that qualified income, so 0.20 × $14,000 = $2,800. You still report the full $14,000 of rental profit, but the $2,800 reduces the income the IRS actually taxes. If your marginal federal rate is 24 percent, that single line is worth about $672 in tax (0.24 × $2,800), and you did nothing extra to earn it except keep clean books and clear the eligibility bar.
The catch is the eligibility bar. A landlord with one passive single-family rental and no other activity may not meet the trade-or-business standard, and the deduction shrinks to zero in a loss year because there is no positive qualified income to take 20 percent of.
Why it matters to a small landlord
The deduction is decided by how serious and regular your activity looks on paper, which is exactly the kind of thing a shoebox of receipts cannot prove. The IRS published a safe harbor that treats a rental enterprise as a trade or business when you log at least 250 hours of rental services in the year and keep separate books and contemporaneous records of the work. You do not have to use the safe harbor, but if you do, the records are the whole point, so a tidy Schedule E and an hours log matter more than any clever structure. For the line-by-line income and expense picture that feeds your qualified profit, see Schedule E for small landlords, and read the IRS guidance directly in the IRS facts about the qualified business income deduction.
Whether you qualify or not, the deduction rides on the same number every other metric does: net profit done right. Track your operating expenses honestly, watch how a passive activity loss can wipe out the qualified income in a given year, and file the Form 1099-NEC for the contractors whose 250 hours of work help your activity look like the business the deduction rewards.
These figures are estimates to help you organize your year for your CPA, not tax advice. Rental eligibility for the QBI deduction is nuanced, and the law changes, so confirm your situation against current IRS guidance and a professional before you file.