QBI Deduction Guide 2026

What Is Qualified Business Income

Per IRC §199A(c), qualified business income (QBI) is the net amount of qualified items of income, gain, deduction, and loss with respect to any qualified trade or business of the taxpayer. Three filters narrow what counts as QBI:

The qualified trade or business filter

The activity must rise to the level of a trade or business under IRC §162 (regular, continuous, profit-seeking activity), must be conducted within the United States, and must NOT be a service of the taxpayer as an employee. Hobby income, passive investment income, and W-2 wages are not QBI. Rental real estate qualifies only if it meets the §162 trade-or-business standard or the Rev. Proc. 2019-38 safe harbor.

Excluded income types

Even within a qualified trade or business, several income types are excluded from QBI:

• Wages, salaries, and reasonable compensation (S-corp shareholder W-2 income, partner guaranteed payments under §707(c))
• Capital gain or loss (long-term or short-term)
• Dividends (ordinary or qualified)
• Interest income (other than interest properly allocable to the business itself, e.g., a working capital line of credit)
• Foreign currency gain or loss
• Net items from notional principal contracts (interest rate swaps, currency swaps)
• Income from annuities that are not received in connection with the trade or business

Required reductions to QBI

Per Reg. §1.199A-3(b)(1)(vi), QBI is reduced by three above-the-line adjustments attributable to the trade or business:

• Deductible portion of self-employment tax (Schedule 1 line 15, half of SE tax under §164(f))
• Self-employed health insurance deduction (Schedule 1 line 17, §162(l))
• Self-employed retirement plan contributions (Schedule 1 line 16, SEP-IRA / SIMPLE / Solo 401(k) under §401, 408)

These reductions can meaningfully reduce QBI for a self-employed taxpayer maxing retirement plans. A solo proprietor with $200,000 of Schedule C net profit, $14,129 of half SE tax, $8,000 of SEHI, and $40,000 of SEP-IRA contributions has QBI of $200,000 - $62,129 = $137,871 - not $200,000. The 20% deduction is computed on the reduced QBI.

2026 Thresholds and the OBBBA-Expanded Phase-In Range

The threshold amount is the single most important figure in §199A planning. Below the threshold, all taxpayers (SSTB and non-SSTB) get the simple 20% × QBI deduction. Above the threshold, the regime changes substantially.

2026 thresholds (Rev. Proc. 2025-32 §4.26)

What changed under OBBBA §70105

Three changes effective for tax years beginning after December 31, 2025:

• Permanence: Prior to OBBBA, §199A was scheduled to sunset on December 31, 2025. OBBBA §70105 removed the sunset entirely - the deduction is now a permanent part of the tax code.
• Expanded phase-in ranges: The phase-in range increased from $50,000 to $75,000 (single, MFS, HOH, QSS) and from $100,000 to $150,000 (MFJ). This makes the transition more gradual - SSTBs that would have lost the deduction at $50K above threshold now retain partial deduction up to $75K above. Non-SSTBs face a more gradual W-2/UBIA limit phase-in.
• $400 minimum deduction (§199A(i)): Taxpayers with at least $1,000 of QBI from an active qualified trade or business receive a minimum $400 deduction. Both amounts inflation-adjusted after 2026. This is most relevant for very small businesses where 20% of small QBI would otherwise produce a tiny deduction.

Threshold position determines the regime

Compare taxable income before the QBI deduction (Form 1040 line 15 before line 13) to the threshold for your filing status:

1. At or below threshold: Simple 20% × QBI. File Form 8995. No W-2/UBIA limit. No SSTB phase-out.
2. Within phase-in range (threshold to threshold + range): Non-SSTBs face the W-2/UBIA limit phased in proportionally. SSTBs face the SSTB phase-out (proportional reduction of QBI, W-2 wages, and UBIA). File Form 8995-A.
3. Above phase-in range: Non-SSTBs face the full W-2/UBIA limit. SSTBs receive ZERO QBI deduction. File Form 8995-A.

SSTB Definition: The Phase-Out Trap For Service Professionals

SSTB stands for "specified service trade or business" under IRC §199A(d)(2). Above-threshold SSTBs lose the QBI deduction. The SSTB designation is the most important classification call in §199A planning for high-income service professionals.

SSTB list per §199A(d)(2)

An SSTB is any trade or business involving the performance of services in one of the following fields:

• Health - doctors, nurses, dentists, optometrists, veterinarians, chiropractors, physical therapists, occupational therapists, psychologists, podiatrists, and similar healthcare providers. Includes diagnostic, therapeutic, and surgical services. EXCLUDES the operation of a health spa, gym, weight-loss clinic, or research lab.
• Law - attorneys, paralegals, legal arbitrators, mediators, and similar legal services providers.
• Accounting - CPAs, enrolled agents, bookkeepers, tax preparers, accountants in non-public practice.
• Actuarial science - actuaries and actuarial consultants.
• Performing arts - actors, musicians, singers, directors, dancers, performers; performance services for film, TV, theater, music. EXCLUDES the operation of a performance venue, the production of a performance work for sale to others, or maintenance/operation of equipment used in performance.
• Consulting - providing professional advice and counsel to clients for a fee. EXCLUDES sales activities and the provision of training/educational courses where the consulting is ancillary.
• Athletics - professional athletes, coaches, team managers; performance services for sports events. EXCLUDES the operation of sports facilities, broadcasting of sports events, or maintenance/operation of equipment used in athletic events.
• Financial services - financial advisors, financial planners, retirement advisors, wealth management.
• Brokerage services - stock brokers and commodity brokers in dealer role (not as agent or salesperson).
• Investment management, trading, or dealing in securities/partnership interests/commodities.
• "Reputation or skill" catch-all - per Reg. §1.199A-5(b)(2)(xiv), this catch-all has been narrowed by IRS regulations to mean ONLY: endorsement income, licensing of name/image/likeness, and appearance fees received for performing services as a celebrity or public figure. It does NOT capture general professional services. This is an important taxpayer-friendly clarification - a freelance designer or graphic artist is not SSTB simply because their work depends on their skill.

Explicitly excluded from SSTB

Two professional service fields are explicitly excluded from SSTB despite being professional services:

• Engineering - civil, mechanical, electrical, structural, environmental engineering, and engineering consulting.
• Architecture - architects, landscape architects, interior designers in architectural role.

These two carve-outs were lobbied for during TCJA drafting and are now well-established. Engineering and architecture firms can receive the full QBI deduction above the threshold (subject only to the W-2/UBIA limit).

SSTB de minimis rule

Per Reg. §1.199A-5(b)(2)(xi), if a trade or business has both SSTB and non-SSTB activities, the de minimis rule applies:

• If gross receipts are $25 million or less: the business is NOT an SSTB if SSTB-character income is 10% or less of total gross receipts.
• If gross receipts exceed $25 million: the business is NOT an SSTB if SSTB-character income is 5% or less of total gross receipts.

The de minimis rule allows businesses with incidental SSTB activity (e.g., a manufacturing company with a small consulting practice) to avoid SSTB classification. The reverse is also possible - SSTB businesses with small non-SSTB activity remain SSTB if SSTB activity exceeds the de minimis threshold.

Anti-crack-and-pack rule

Per Reg. §1.199A-5(c)(2), the IRS targets attempts to split an SSTB into an SSTB-component and a non-SSTB-component, with the non-SSTB-component then claiming the deduction. Common targets: a medical practice splitting into a medical-services entity (SSTB) and a real-estate entity (non-SSTB) that owns the medical building and leases it to the practice. Both entities are treated as a single SSTB when (a) 50% or more common ownership and (b) the non-SSTB entity provides 80% or more of its property or services to the SSTB. Below 80%, the proportional share that goes to the SSTB is treated as SSTB.

The W-2 Wages and UBIA Limitation

When taxable income exceeds the threshold, the QBI deduction for each non-SSTB qualified trade or business is limited under IRC §199A(b)(2). For SSTBs above the phase-in range, the deduction is zero regardless of W-2 wages or UBIA.

The greater-of formula

The W-2/UBIA limit is the GREATER of:

• Prong (a): 50 percent of W-2 wages paid by the qualified trade or business
• Prong (b): 25 percent of W-2 wages plus 2.5 percent of the unadjusted basis immediately after acquisition (UBIA) of qualified property

The QBI deduction for the business is the lesser of (i) 20% × QBI or (ii) the W-2/UBIA limit. Prong (a) tends to dominate for service businesses with high wages and low capital. Prong (b) tends to dominate for capital-intensive businesses (real estate, manufacturing) with low wages relative to invested basis.

W-2 wages definition

Per Reg. §1.199A-2(b), W-2 wages for §199A purposes include amounts properly reported on Form W-2 box 1 (wages subject to income tax withholding) for the calendar year ending during the taxable year, attributable to the qualified trade or business. Includes:

• Wages paid to non-owner employees of the business
• S-corp shareholder reasonable compensation (W-2)
• C-corp officer W-2 wages

Excludes: guaranteed payments to partners (those are not W-2 wages and do NOT count toward the limit), self-employment earnings of sole proprietors (no W-2 issued to self), wages paid to family members not actively working in the business (anti-abuse).

For sole proprietors and disregarded single-member LLCs: there is no W-2 wage paid to the owner, so W-2 wages = wages paid to employees. A sole prop with no employees has $0 W-2 wages and consequently may face the full W-2/UBIA limit at zero above the threshold.

UBIA of qualified property definition

Per §199A(b)(6) and Reg. §1.199A-2(c), UBIA of qualified property is the unadjusted basis (cost basis at placed-in-service date, NOT reduced by accumulated depreciation) of depreciable tangible property used in the qualified trade or business, AT THE END OF THE TAX YEAR, with the depreciation period still open.

The depreciation period is the later of (a) 10 years from placed-in-service, OR (b) the property's depreciation life under MACRS (for nonresidential real property, 39 years; for residential rental property, 27.5 years). After the depreciation period closes, the property is no longer qualified property and does NOT count in UBIA.

Qualified property includes: buildings (commercial and residential rental), equipment, vehicles used in the business, and other tangible personal property. Excludes: inventory, land (not depreciable), intangible property (goodwill, patents, copyrights are not depreciable for §199A purposes), and property held primarily for investment.

Why the 25%-wages-plus-2.5%-UBIA prong matters

The 25%-wages-plus-2.5%-UBIA prong was added to provide a meaningful QBI deduction for capital-intensive businesses with low W-2 wages. A real estate rental enterprise (rising to the QTB level under Rev. Proc. 2019-38) typically pays minimal W-2 wages (perhaps a property manager) but has substantial UBIA (the building itself). The 2.5% × UBIA prong allows the rental to claim a meaningful QBI deduction even with limited W-2 payroll.

Example: A rental enterprise owns 6 single-family rentals with combined UBIA of $1,800,000 and pays $0 W-2 wages (managed by owner). The W-2/UBIA limit prongs: (a) 50% × $0 = $0; (b) 25% × $0 + 2.5% × $1,800,000 = $45,000. The limit is $45,000 (greater of). If QBI is $80,000, the QBI deduction is the lesser of 20% × $80,000 = $16,000 or $45,000 = $16,000. Limit is non-binding. The 2.5% UBIA prong provides the support.

Aggregation Election Under Treas. Reg. §1.199A-4

When taxable income exceeds the threshold and a taxpayer owns multiple qualified trades or businesses, the aggregation election can substantially increase the QBI deduction by pooling W-2 wages and UBIA across related businesses.

Why aggregate

Suppose a taxpayer owns two businesses: (1) a non-SSTB consulting firm with $200K of QBI but $0 W-2 wages (no employees), and (2) a non-SSTB real estate rental enterprise with $40K of QBI, $0 W-2 wages, and $1,000,000 of UBIA. Without aggregation, the consulting firm's QBI deduction is $0 (no W-2 wages or UBIA above the threshold). With aggregation, the combined business has $240K QBI, $0 W-2 wages, and $1,000,000 UBIA. The W-2/UBIA limit is greater of (a) $0 or (b) $25,000 = $25,000. The aggregated deduction is the lesser of 20% × $240K = $48K or $25K = $25K. Aggregation captures $25K of deduction that would otherwise be unavailable.

Aggregation requirements (Reg. §1.199A-4(b))

All four requirements must be met:

1. Common ownership: The same person, or a group of persons acting together, must directly or indirectly (under §267(b) or §707(b) attribution) own at least 50 percent of each trade or business to be aggregated.
2. Same tax year: Each business in the aggregated group must share the majority of the tax year.
3. No SSTB: None of the businesses in the aggregated group can be an SSTB. (SSTBs cannot be aggregated with non-SSTBs; SSTBs cannot be aggregated with other SSTBs.)
4. At least two of three operational factors:
   • The businesses provide products, property, or services that are the same OR customarily offered together (e.g., a restaurant and a catering company; a car dealership and a service center).
   • The businesses share facilities or significant centralized business elements - personnel, accounting, legal, HR, IT, marketing, manufacturing, purchasing.
   • The businesses operate in coordination with, or reliance on, one or more of the businesses in the aggregated group.

How to elect aggregation

The election is made on Form 8995-A Schedule B by completing the aggregation reporting requirements:

• Identify each aggregated trade or business by name and description.
• Identify the aggregation rationale (which of the three operational factors are met).
• Provide the ownership structure showing the 50% common ownership.
• Sign and date the election.

The election is binding for the year and for subsequent years - it is irrevocable unless the aggregated businesses materially change in ownership or operations. Once aggregated, the businesses are treated as a single QTB for §199A purposes; subsequent year filings must continue the aggregation.

When NOT to aggregate

Aggregation is not always beneficial:

• If one business has negative QBI (loss), aggregation forces the loss to offset other QBI - sometimes worse than netting losses separately under §199A(c)(2).
• Once elected, aggregation locks the group. If business mix changes (sell one entity, add another), the aggregation may not adapt cleanly.
• For non-SSTBs already fully supported by their own W-2 wages or UBIA, aggregation adds complexity without benefit.

The REIT and PTP Component

Section 199A actually has two parts: the business QBI component (covered above) and a separate REIT/PTP component for portfolio income from REITs and publicly traded partnerships.

What qualifies

Qualified REIT dividends are ordinary dividends from real estate investment trusts that are NOT capital gain distributions and NOT qualified dividend income. Reported on Form 1099-DIV box 5 (Section 199A dividends). REIT dividends from mutual funds and ETFs holding REIT positions are passed through to fund shareholders and reported in box 5.

Qualified PTP income is the taxpayer's share of qualified items from a publicly traded partnership, typically reported on Schedule K-1 of the PTP. Common examples: midstream energy PTPs (oil and gas pipeline operators), some real estate PTPs.

The 20% deduction with no limitations

The REIT/PTP component is 20% × (qualified REIT dividends + qualified PTP income). Crucially:

• NO W-2/UBIA limitation applies. The REIT or PTP entity itself has W-2 wages and UBIA, but those don't flow to the individual shareholder.
• NO SSTB phase-out applies. REITs and PTPs are generally not SSTBs.
• NO threshold-based phase-in. The 20% deduction is available at any income level.

For high-income taxpayers above the §199A threshold who hold REIT positions in a brokerage account, the 20% deduction on qualified REIT dividends is essentially a free pass - no entity-level requirements to satisfy, no W-2 wages to pay, no UBIA to maintain.

Limitation: the overall 20% cap still applies

The combined business QBI component plus REIT/PTP component is subject to the overall §199A(a)(1)(B) cap: 20% × (taxable income before QBI - net capital gain). Net capital gain INCLUDES qualified dividend income (per §199A(e)(3)). For a retiree with mostly portfolio income, the overall cap can bind even though the REIT/PTP component itself has no entity-level limits.

Form 8995 vs Form 8995-A: Choosing the Right Form

The form choice is determined by taxable income and business type, not by taxpayer preference. Using the wrong form is a common error.

Form 8995 (Simplified)

Use Form 8995 when ALL of the following are true:

• Taxable income before QBI deduction is at or below the threshold ($201,750 single / $403,500 MFJ for 2026)
• Not a patron of an agricultural or horticultural cooperative

Form 8995 is a single page that simply computes 20% × QBI, 20% × qualified REIT/PTP income, sums them, applies the overall TI cap, and reports the result on Form 1040 line 13. The SSTB designation does NOT matter for Form 8995 filers (below threshold, SSTBs and non-SSTBs are treated identically).

Form 8995-A (Full)

Use Form 8995-A when ANY of the following are true:

• Taxable income before QBI deduction exceeds the threshold
• Taxpayer has SSTB income with TI at or above the threshold
• Taxpayer is a patron of a specified agricultural or horticultural cooperative

Form 8995-A has four schedules:

• Schedule A: SSTB phase-out computation. Reduces QBI, W-2 wages, and UBIA proportionally based on TI position within the phase-in range. Required for all SSTB businesses with TI ≥ threshold.
• Schedule B: Aggregation election. Identifies aggregated businesses, ownership, and operational factors.
• Schedule C: Loss netting. Required when one or more QTBs have negative QBI in the year. Net negative carries forward to next year and reduces next year's QBI.
• Schedule D: Special rules for patrons of agricultural cooperatives (DPAD-equivalent reduction).

Entity Choice Planning Around the Threshold

The threshold creates a planning cliff. Two structural responses can preserve the QBI deduction for taxpayers who would otherwise lose it.

S-corp election to add W-2 wages

For an above-threshold non-SSTB sole proprietor with insufficient W-2 wages to support the QBI deduction (e.g., solo Schedule C consultant with no employees), an S-corp election can transform some business profit into W-2 reasonable compensation. The W-2 wages then count toward the 50%-wages limit.

Example: A solo consultant with $400K of net Schedule C income and $0 W-2 wages, MFJ taxable income $385K, above the $403,500 MFJ threshold but within the phase-in range. As a sole prop above threshold with $0 W-2 wages, the W-2/UBIA limit phases the deduction down significantly. After S-corp election with $150K W-2 reasonable comp and $250K K-1 ordinary income, the S-corp's W-2 wages are $150K, supporting a 50%-wages limit of $75K - well above 20% × $250K QBI = $50K. The S-corp election restores the full deduction. SE tax savings from the election (FICA only on W-2 wages, not on K-1 distribution) is a separate benefit. See the S-Corp Savings Calculator.

Pre-tax retirement deferrals to drop below threshold

For SSTB owners above the threshold, the cleanest response is to reduce taxable income below the threshold using pre-tax retirement deferrals. Solo 401(k) 2026 limits: $24,500 employee elective deferral (under 50) + 25% × net SE earnings (employer profit share, up to $73,500 total in 2026). Defined benefit plans can accommodate much larger annual contributions for older owners.

Example: A solo SSTB consultant with $260K MFJ taxable income, $50K above the MFJ threshold $403,500... wait, $260K is BELOW the MFJ threshold so the example is wrong. Let me restate. A solo SSTB consultant with $440K MFJ taxable income before QBI, $37K above the $403,500 MFJ threshold, currently in the SSTB phase-out range. A $40K Solo 401(k) contribution drops TI to $400K, below the threshold. The simple 20% × QBI deduction is fully restored (instead of partially phased out). At a 32% bracket, the SSTB-phase-out recovery is worth approximately 20% × (QBI lost) × 32% in tax savings - often $5K-$15K of incremental value, on top of the retirement plan's standalone tax benefit. See the SEP-IRA / Solo 401(k) Calculator.