If you run a sole proprietorship, partnership, S corporation, or most LLCs, the qualified business income (QBI) deduction under Section 199A can let you deduct up to 20% of your qualified business income on your personal tax return — before you even get to itemized or standard deductions. It's one of the biggest tax breaks available to self-employed people and small pass-through business owners, but it comes with income-based limits, and if you work in certain service fields, those limits can shrink or eliminate the deduction entirely at higher income levels.
This deduction has been the subject of major federal tax legislation — 2025's One Big Beautiful Bill Act made it permanent and adjusted some of its mechanics — so treat the general shape described here as reliable and confirm the current-year details, including any dollar thresholds, directly on irs.gov before you rely on them.
What the QBI deduction actually is
Section 199A lets eligible owners of "pass-through" businesses deduct up to 20% of their qualified business income. A pass-through business is one where the business itself doesn't pay federal income tax — instead, the profit "passes through" to the owner's personal return and is taxed at the owner's individual rate. That includes:
Sole proprietorships (Schedule C)
Partnerships
S corporations
Most LLCs — because an LLC has no federal tax classification of its own. A single-member LLC is taxed as a sole proprietorship by default, a multi-member LLC as a partnership, and either can elect S-corp or C-corp treatment instead. Which of those you are determines whether QBI applies to you.
Income earned through a C corporation does not qualify, and neither does W-2 wage income you earn as someone else's employee. The deduction is meant for business owners, not employees — so whether a worker is properly classified as an independent contractor or an employee matters here too, and that classification is a legal question based on the real working relationship, not a label in a contract.
The two things that limit the deduction
The headline rate is up to 20% of qualified business income, but two separate limits can cut that down as your income rises:
1. The wage and property limitation
Once your taxable income rises above a threshold that adjusts periodically, the deduction can be capped by how much the business pays in W-2 wages and/or the value of qualified business property it owns. Below that threshold, this limitation generally doesn't apply and the calculation is simpler. This is the main reason a very profitable business with few or no employees can see its deduction shrink at higher income — it has little wage base to measure against.
2. The "specified service trade or business" (SSTB) limitation
Certain service-based fields are treated differently. If your business is a "specified service trade or business," the deduction phases out — and can disappear entirely — once your taxable income passes a certain range, regardless of wages paid. Fields generally treated as specified service trades or businesses include:
Health (physicians, dentists, and similar direct patient-care providers)
Law
Accounting
Consulting
Financial services, investing, and investment management
Actuarial science
Performing arts and athletics
Businesses where the principal asset is the reputation or skill of one or more of the owners or employees
Notably excluded from the SSTB category (meaning they're treated like ordinary businesses) are engineering and architecture. Below the lower income threshold, an SSTB owner gets the full 20% deduction like anyone else; it's only at higher income that the SSTB label starts to matter. If your business falls near this line, this is exactly the kind of question worth taking to a CPA — the definitions have real edge cases.
Why you should verify the current numbers before you rely on them
Section 199A was originally scheduled to expire at the end of 2025, but the One Big Beautiful Bill Act, enacted in 2025, made the deduction permanent, widened the income ranges used in the wage/property and SSTB calculations, and added a new guaranteed minimum deduction for owners with at least a small amount of active qualified business income. Because the specific dollar figures are set by that legislation and then adjusted for inflation, the numbers move. So:
Do not treat any specific dollar income threshold you see in an older article (including this one) as current.
Confirm the current income thresholds, phase-in ranges, and the amount of the minimum deduction on irs.gov before you plan around them — 2025 legislation changed these, so figures from earlier years are out of date.
If you're close to a threshold, get your numbers checked by a CPA rather than estimating — a difference of a few thousand dollars in taxable income can matter a great deal here.
The IRS maintains an official overview of the deduction, along with links to the relevant forms and instructions, on irs.gov's qualified business income deduction page — that is the source to check, not a tax-prep blog or a search-engine summary.
What counts as qualified business income
QBI is generally the net amount of income, gain, deduction, and loss from your qualified trade or business, connected with a U.S. trade or business. It does not include:
Wages you pay yourself as an S-corp shareholder-employee (that's ordinary wage income, not QBI)
Capital gains or losses
Dividend income
Interest income not properly allocable to the business
Guaranteed payments to a partner for services
Separately, the deduction also covers up to 20% of qualified REIT dividends and qualified publicly traded partnership income, which follow their own rules.
What to do
Confirm your entity's tax classification. Know whether you're filing as a sole proprietor, a partnership, an S corporation, or something else — that determines how QBI flows to your personal return.
Check whether your work falls under a specified service trade or business. If you're a consultant, work in health, law, accounting, or financial services, or your income depends heavily on your personal reputation or skill, flag this for your preparer specifically.
Look up the current-year income thresholds on irs.gov rather than relying on a number you saw last year or in a general article. These figures are adjusted periodically and have also been changed by legislation.
Use the right form. Simpler QBI situations are reported on Form 8995; taxpayers above the income threshold, or with more complex facts, generally use Form 8995-A. The IRS instructions for those forms walk through the calculation step by step.
Keep clean books. Because the deduction depends on net qualified business income, and possibly on wages paid and property owned by the business, accurate bookkeeping throughout the year makes this calculation far easier at filing time.
Loop in a CPA if your income is near a threshold, you have multiple businesses, or you're in an SSTB field. The interaction between multiple businesses, aggregation elections, and the SSTB phase-out is one of the more technical corners of the tax code, and a qualified preparer can often find a legitimate approach you'd miss on your own.
A note on state taxes
Section 199A is a federal income tax deduction. Whether your state also gives you a QBI-equivalent break on your state return varies — some states start their calculation from federal taxable income (which can carry the benefit through automatically or with adjustments) and others do not conform to this part of the federal code at all. Check with your state tax agency or your preparer about how your state treats it; don't assume the federal break follows you to your state return.
Frequently asked questions
Do I need to itemize deductions to claim the QBI deduction?
No. The QBI deduction is available whether you take the standard deduction or itemize — it's calculated separately and doesn't compete with those choices.
I have a full-time job and a side business. Does my side business qualify?
Possibly, as long as the side activity rises to the level of a trade or business and the income isn't W-2 wages. Many freelancers and gig workers with self-employment income can qualify; the same income-level and SSTB rules apply regardless of whether the business is your only income source.
Does an S-corp owner's own salary count toward the 20% deduction?
No. Reasonable compensation an S-corp pays its owner-employee is wage income, not qualified business income, and is excluded from the QBI calculation. Only the business's remaining pass-through profit can be QBI.
I'm a consultant — am I automatically shut out of the deduction?
Not automatically. Consulting is generally treated as a specified service trade or business, but SSTB owners below the lower income threshold still get the full deduction. The phase-out only bites as taxable income rises into and above the higher range — confirm where those ranges currently sit on irs.gov.
Is the QBI deduction going away after 2025?
No. It had been scheduled to expire at the end of 2025, but 2025's One Big Beautiful Bill Act made it permanent, so it remains available going forward. The specific income thresholds and other figures still change over time, so confirm the current-year details on irs.gov.
Where do I find the official, current rules instead of a summary like this one?
Start with the IRS's own qualified business income deduction page on irs.gov, and the instructions for Forms 8995 and 8995-A, which are updated when the law or the inflation-adjusted figures change.
This article is general information, not legal, tax, or financial advice, and reading it does not create an attorney-client or accountant-client relationship.
Frequently asked questions
Do I need to itemize deductions to claim the QBI deduction?
No. The QBI deduction is available whether you take the standard deduction or itemize — it's calculated separately and doesn't compete with those choices.
I have a full-time job and a side business. Does my side business qualify?
Possibly, as long as the side activity rises to the level of a trade or business and the income isn't W-2 wages. Many freelancers and gig workers with self-employment income can qualify; the same income-level and SSTB rules apply regardless of whether the business is your only income source.
Does an S-corp owner's own salary count toward the 20% deduction?
No. Reasonable compensation an S-corp pays its owner-employee is wage income, not qualified business income, and is excluded from the QBI calculation. Only the business's remaining pass-through profit can be QBI.
I'm a consultant — am I automatically shut out of the deduction?
Not automatically. Consulting is generally treated as a specified service trade or business, but SSTB owners below the lower income threshold still get the full deduction. The phase-out only bites as taxable income rises into and above the higher range — confirm where those ranges currently sit on irs.gov.
Is the QBI deduction going away after 2025?
No. It had been scheduled to expire at the end of 2025, but 2025's One Big Beautiful Bill Act made it permanent, so it remains available going forward. The specific income thresholds and other figures still change over time, so confirm the current-year details on irs.gov.
Where do I find the official, current rules instead of a summary like this one?
Start with the IRS's own qualified business income deduction page on irs.gov, and the instructions for Forms 8995 and 8995-A, which are updated when the law or the inflation-adjusted figures change.
This article is general legal information, not legal advice, and may not reflect the most current law or the law in your jurisdiction. Laws vary by state and change over time. For advice about your specific situation, consult a licensed attorney.
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