The QBI Deduction (Section 199A) for 2026 — How the 20% Pass-Through Deduction Works and Who Qualifies
- Tax Wealth Consultant
- 3 days ago
- 9 min read
The QBI deduction — short for Qualified Business Income deduction, codified in Internal Revenue Code Section 199A — is one of the most valuable tax breaks available to business owners today. It allows eligible owners of pass-through businesses to deduct up to 20% of their qualified business income on their personal tax return. For a high-bracket owner, the QBI deduction can lower the effective top federal rate on business income from 37% to roughly 29.6%.
For years, the QBI deduction came with an expiration date — the Tax Cuts and Jobs Act of 2017 created it with a scheduled sunset after December 31, 2025. That changed in 2025. This guide walks through how the 20% pass-through deduction works for 2026, the income thresholds that determine who qualifies for QBI, the SSTB rules and the QBI phase-out that limit the deduction for certain professional service businesses, the W-2 wage limitation that applies to higher earners, and how to claim the deduction on Form 8995. We also cover the S-Corp QBI deduction calculation, since the S-Corp QBI deduction depends heavily on the W-2 wages the S-Corp pays its owners. Understanding who qualifies for QBI — and where the QBI phase-out begins — is the highest-leverage tax conversation a pass-through business owner can have each year, and it is exactly the kind of analysis a tax planning firm Irvine business owners trust runs annually. Every fact below comes directly from IRC §199A, IRS Revenue Procedure 2025-32 (2026 inflation-adjusted amounts), the One Big Beautiful Bill Act (OBBBA), and the Section 199A Treasury Regulations. As a tax planning firm Irvine professionals rely on for entity and deduction planning, our team at Tax Wealth Consultant treats the QBI phase-out analysis as a recurring annual review, not a one-time calculation.
What Is the QBI Deduction?
The QBI deduction allows owners of pass-through businesses to deduct up to 20% of their qualified business income from their taxable income. "Pass-through businesses" are entities that do not pay tax at the entity level — sole proprietorships (Schedule C), partnerships, S corporations, and most LLCs. The income passes through to the owners, who report it on their personal returns. The 20% pass-through deduction under Section 199A is taken on the owner's individual Form 1040 (source: IRC §199A; IRS, About Form 8995).
Qualified business income is generally the net income from a qualified trade or business — gross income minus deductible business expenses. Certain items are specifically EXCLUDED from qualified business income: capital gains and losses, dividend income, interest income not properly allocable to a trade or business, and reasonable compensation paid to an S-Corp shareholder-employee (the W-2 wages are not QBI; only the remaining pass-through profit is). Income from a C corporation does NOT qualify for the QBI deduction, and neither does W-2 wage income from employment (source: IRC §199A(c); Treas. Reg. §1.199A-3).
In its simplest form, for an owner below the income thresholds (covered in Section 3), the QBI deduction equals the lesser of: (a) 20% of qualified business income, or (b) 20% of the owner's taxable income minus net capital gains. Below the threshold, there is no W-2 wage test and no SSTB restriction — the calculation is nearly mechanical. The 20% pass-through deduction in the simple case is exactly that: 20% of the business income, capped only by 20% of overall taxable income.
OBBBA Made the QBI Deduction Permanent — And Expanded It
The single biggest QBI deduction 2026 development is permanence. Section 199A was originally scheduled to expire after December 31, 2025, under the Tax Cuts and Jobs Act of 2017. The One Big Beautiful Bill Act (OBBBA), signed into law July 4, 2025, removed the sunset through Section 70105 of the Act. The QBI deduction is now a permanent part of the tax code. Business owners can plan entity structure, compensation, and ownership transitions knowing the 20% pass-through deduction will remain available indefinitely (source: OBBBA §70105; IRC §199A).
THREE OBBBA CHANGES TO THE QBI DEDUCTION FOR 2026
PERMANENCE — the sunset that would have ended Section 199A after 2025 is gone; the deduction continues indefinitely
WIDER PHASE-IN RANGES — the phase-in range above the income threshold increased from $50,000 to $75,000 for single filers, and from $100,000 to $150,000 for joint filers (covered in Section 3)
NEW $400 MINIMUM DEDUCTION — starting 2026, if your aggregate QBI from active qualified trades or businesses is at least $1,000 and you materially participate, you receive a minimum deduction of $400 (indexed for inflation).
Note: this minimum does NOT rescue an SSTB owner whose income is above the upper threshold, because SSTB income is fully excluded at that level
If you have read older tax guides referencing a "2025 sunset" or "expiration" of the QBI deduction, that information is now outdated. OBBBA made the QBI deduction 2026 and beyond a permanent fixture, and the wider phase-in ranges mean some pass-through owners who did not previously qualify may now qualify, and some may receive a larger deduction than under prior law.
The QBI Income Threshold — The Most Important Number in Section 199A
The QBI income threshold is the single most important figure in Section 199A planning. It determines which of three regimes applies to your deduction. The 2026 thresholds, set by IRS Revenue Procedure 2025-32, are based on your taxable income (before the QBI deduction):
2026 QBI INCOME THRESHOLD (Rev. Proc. 2025-32)
Lower threshold: $201,750 (single) / $403,500 (married filing jointly)
Phase-in range above the threshold: $75,000 (single) / $150,000 (MFJ) — widened by OBBBA
Upper threshold (full phase-out for SSTBs): $276,750 (single) / $553,500 (MFJ)
All thresholds are indexed annually for inflation
THE THREE REGIMES
BELOW the lower threshold: Full 20% pass-through deduction with no W-2 wage test and no SSTB restriction. The simple calculation applies to everyone — SSTB or not
WITHIN the phase-in range: A partial deduction applies. For non-service businesses, the W-2 wage limitation phases in. For SSTBs, the deduction itself phases out
ABOVE the upper threshold: For non-service businesses, the W-2 wage / property limitation fully applies. For SSTBs, the QBI deduction is reduced to zero (with limited exceptions on REIT dividends and PTP income)
The QBI income threshold matters because of what happens above it. Below it, almost every pass-through owner gets the full 20%. Above it, the rules split sharply depending on whether the business is a Specified Service Trade or Business (SSTB) — covered in the next section — and on the W-2 wages the business pays. This is why the QBI income threshold is the central planning number for business owners around the $200,000 (single) and $400,000 (joint) income levels.
SSTB Rules — Why Some Professionals Lose the QBI Deduction
The SSTB rules are the most consequential limitation in Section 199A. A "Specified Service Trade or Business" (SSTB) is a business where the principal asset is the reputation or skill of its owners or employees. The SSTB rules matter because once taxable income rises above the upper threshold ($276,750 single / $553,500 MFJ for 2026), an SSTB owner's QBI deduction is reduced to ZERO (source: IRC §199A(d)(2); Treas. Reg. §1.199A-5).
BUSINESSES THAT ARE SSTBs (QBI deduction phases out above the threshold)
Health — physicians, dentists, nurses, and other medical professionals
Law — attorneys and law firms
Accounting — CPAs, Enrolled Agents, bookkeepers
Consulting — providing advice and counsel
Financial services — financial advisors, wealth managers
Brokerage services, investing and investment management
Performing arts and athletics
Any business where the principal asset is the reputation or skill of one or more owners/employees
BUSINESSES THAT ARE NOT SSTBs (carve-outs and exclusions)
Engineering and architecture — specifically CARVED OUT by statute; they are NOT SSTBs even though they are skill-based
Most product and manufacturing businesses
Construction and the trades
Real estate (when it rises to a trade or business)
Retail, restaurants, most operating businesses
An SSTB owner with taxable income BELOW the lower threshold still gets the full 20% deduction — the SSTB restriction only applies above the threshold. Between the thresholds, an SSTB's deduction phases out proportionally. Above the upper threshold, the SSTB deduction is gone entirely. This is why the SSTB rules create some of the highest marginal tax rates in the entire code for professional service owners inside the phase-out window (source: Treas. Reg. §1.199A-5).
The W-2 Wage Limitation — How Non-Service Businesses Are Limited
For NON-SSTB businesses (manufacturing, construction, retail, real estate, and other qualified trades) above the income threshold, the deduction does not phase out the way it does for SSTBs. Instead, a different limitation applies — the W-2 wage and property limitation under IRC §199A(b)(2). Above the threshold, the QBI deduction for a non-service business is limited to the GREATER of:
50% of the W-2 wages paid by the business, OR
25% of the W-2 wages paid PLUS 2.5% of the unadjusted basis immediately after acquisition (UBIA) of qualified property
The practical effect of the W-2 wage limitation: a non-service business that pays significant W-2 wages OR owns significant qualified property (equipment, real estate, machinery) can preserve a large portion of its QBI deduction above the threshold. A business with little payroll and few assets — for example, a sole proprietor consultant with no employees — may find the deduction limited. This is why the W-2 wage limitation interacts with entity structure and compensation planning. An S-Corp QBI deduction calculation, for instance, depends heavily on the W-2 wages the S-Corp pays its shareholder-employees, because those wages count toward the 50% W-2 limitation (source: IRC §199A(b)(2); Treas. Reg. §1.199A-2).
Section 199A also provides a 20% deduction on qualified REIT dividends and qualified publicly traded partnership (PTP) income — with NO W-2 wage limit and NO SSTB exclusion. For high-earning SSTB owners who have lost their business QBI deduction entirely above the threshold, this REIT/PTP component remains an available deduction lane on the investment side.
How to Claim the QBI Deduction — Form 8995 and Form 8995-A
The QBI deduction is claimed on the owner's individual Form 1040 using one of two forms, depending on income level:
Form 8995 (Simplified Computation): used when taxable income is at or below the threshold ($201,750 single / $403,500 MFJ for 2026). The simple 20% calculation with no W-2 wage test
Form 8995-A (the long form): used when taxable income is above the threshold, requiring the SSTB analysis, the W-2 wage / UBIA limitation, and the phase-in calculations
Business owners with multiple qualified trades or businesses may be able to AGGREGATE them under Treasury Regulation §1.199A-4, combining QBI, W-2 wages, and UBIA across the aggregated businesses. Aggregation can help a business owner who has one entity with high income but low wages and another with the opposite profile — combining them can preserve more of the deduction. The aggregation election has specific requirements and, once made, generally must be maintained consistently in future years (source: Treas. Reg. §1.199A-4).
Because the QBI deduction is computed on the individual return but depends on business-level data (qualified business income, W-2 wages paid, qualified property basis), accurate books and clean separation of qualified vs. non-qualified income are prerequisites for claiming who qualifies for QBI correctly. For owners above the threshold, the Form 8995-A calculation is where most QBI errors occur — and where most missed deduction value is found.
What This Guide Does Not Cover
This guide explains how the QBI deduction works under federal law for 2026. It does NOT cover: (1) the specific dollar value of the deduction for your situation — that requires personal calculation based on your income, entity, wages, and property; (2) entity-choice planning to optimize the QBI deduction (S-Corp election, reasonable compensation level, aggregation strategy) — that requires personal analysis; (3) whether your specific business is an SSTB when it has mixed activities — the SSTB determination can be fact-intensive for businesses with both service and non-service lines; (4) the interaction of QBI with retirement plan contributions, self-employment tax deductions, and the half-SE-tax adjustment, all of which reduce QBI; (5) state treatment — California does not conform to Section 199A, so the deduction is a federal-only benefit; (6) the rental real estate safe harbor under Rev. Proc. 2019-38 and the trade-or-business determination for rental activities. Each of these requires personal analysis.
Where to Go From Here
The QBI deduction is one of the highest-value, most-overlooked tax benefits available to pass-through business owners — and now that OBBBA has made it permanent, it rewards thoughtful, recurring planning every year. If your taxable income is near the $201,750 (single) or $403,500 (joint) threshold, if you operate an SSTB and are losing the deduction as your income grows, or if you simply are not certain you are claiming the full deduction you are entitled to, the calculation is worth a professional review. Tax Wealth Consultant is an Enrolled Agent tax planning firm Irvine based, serving business owners across Orange County and California. Our team reviews your qualified business income, evaluates SSTB status, models the W-2 wage limitation and aggregation options, and coordinates the entity and compensation structure that supports the largest defensible Section 199A deduction for your specific facts.
Related:
Sources cited in this article: • Internal Revenue Code §199A — Qualified Business Income deduction • Internal Revenue Code §199A(b)(2) — W-2 wage and UBIA limitation • Internal Revenue Code §199A(c) — Qualified business income defined • Internal Revenue Code §199A(d)(2) — Specified Service Trade or Business defined • Treasury Regulation §1.199A-1 — Operational rules • Treasury Regulation §1.199A-2 — W-2 wages and UBIA • Treasury Regulation §1.199A-3 — Qualified business income • Treasury Regulation §1.199A-4 — Aggregation • Treasury Regulation §1.199A-5 — Specified service trades or businesses • IRS Revenue Procedure 2025-32 — 2026 inflation-adjusted QBI thresholds ($201,750 / $403,500) • One Big Beautiful Bill Act (OBBBA), Section 70105 — Permanent extension of Section 199A; expanded phase-in ranges; $400 minimum deduction • IRS Form 8995 — Qualified Business Income Deduction Simplified Computation • IRS Form 8995-A — Qualified Business Income Deduction • Revenue Procedure 2019-38 — Rental real estate safe harbor |
Are You Claiming the Full QBI Deduction You're Entitled To?
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