LLC QBI Deduction Guide — Section 199A 20% Pass-Through Deduction (2026)

Before you start

What to know first

Section 199A (IRC §199A), enacted by the Tax Cuts and Jobs Act (TCJA), provides a deduction of up to 20% of qualified business income (QBI) for pass-through entities — sole proprietors (Schedule C), partnerships (Form 1065), S-Corps (Form 1120-S), and single-member LLCs taxed as disregarded entities. The deduction is taken on the owner's personal Form 1040, not on the business return. It reduces taxable income (not adjusted gross income) and is available to both itemizers and standard deduction filers. The deduction expires after December 31, 2025, under the TCJA's sunset provisions, unless extended by Congress. As of 2026, monitor IRS guidance and legislative developments — the deduction may or may not be available.
Qualified Business Income (QBI) is the net amount of qualified items of income, gain, deduction, and loss connected with the conduct of a qualified trade or business within the United States. QBI excludes: capital gains and losses; dividends; interest income not properly allocable to the business; reasonable compensation paid to S-Corp shareholders; guaranteed payments to partners; Section 1231 gains treated as capital gains. For a SMLLC on Schedule C, QBI is generally the net profit from Schedule C before the QBI deduction itself.
Income thresholds for 2024 (indexed annually): Below $191,950 (single) / $383,900 (married filing jointly): deduction is 20% of QBI, limited to 20% of taxable income minus net capital gains. No W-2 wage or property limitation applies; SSTB businesses are fully eligible. Between $191,950–$241,950 (single) / $383,900–$483,900 (MFJ): phase-in range — the W-2/UBIA limitation and SSTB limitation phase in over this range. Above $241,950 (single) / $483,900 (MFJ): full W-2 wage / UBIA limitation applies; SSTB owners receive $0 deduction. Thresholds are indexed for inflation — verify in IRS Rev. Proc. for the applicable tax year.
W-2 wage and UBIA limitation (applies above the income phase-in threshold): the §199A deduction cannot exceed the greater of: (1) 50% of W-2 wages paid by the business; or (2) 25% of W-2 wages plus 2.5% of the unadjusted basis immediately after acquisition (UBIA) of all qualified property. For sole proprietors and single-member LLCs (Schedule C) who have no employees, the W-2 wage is $0 — meaning the W-2/UBIA limitation can reduce or eliminate the §199A deduction for high-income SMLLCs without significant tangible property. This is a primary reason some high-income LLC owners elect S-Corp status — paying a reasonable W-2 salary creates W-2 wages that support the §199A limitation. Qualified property means depreciable tangible property used in the qualified trade or business as of the end of the tax year and within its MACRS depreciable period (10 years from placed-in-service date, or the end of the applicable MACRS period, whichever is later).
Specified Service Trade or Business (SSTB) exclusion: the following fields are classified as SSTBs and are entirely ineligible for the QBI deduction above the income thresholds (and subject to phase-in between the thresholds): health (physicians, dentists, nurses, veterinarians, physical therapists, pharmacists, and similar providers); law (attorneys, paralegals); accounting (CPAs, bookkeepers, enrolled agents); actuarial science; performing arts; consulting (providing advice or counsel — distinguished from engineers, architects, and financial advisers who do not primarily provide advice); athletics (professional athletes, coaches); financial services (investment advisers, broker-dealers, wealth managers); brokerage services; investing, trading, and dealing in securities, partnership interests, or commodities. Engineering and architecture are explicitly excluded from the SSTB list and are eligible for the QBI deduction at all income levels. 'Consulting' is the most litigated SSTB category — general management, coaching, and advisory services are often caught in this net.
The 'crack and pack' strategy (disaggregating an SSTB and a non-SSTB business) has been curtailed by IRS regulations. If an SSTB and a non-SSTB are operated as one business or have more than 50% common ownership with significant shared services, the IRS may treat the non-SSTB portion as an SSTB for QBI purposes. Conversely, if an SSTB and a non-SSTB are genuinely separate operations with less than 50% common ownership or no shared services, the non-SSTB remains eligible for the deduction regardless of the SSTB disqualification.
Aggregation election: LLC owners who operate multiple businesses may elect to aggregate all businesses into a single QBI calculation. Aggregation allows a business with strong W-2 wages (but low QBI) to combine with a high-QBI business that lacks W-2 wages, potentially satisfying the W-2 limitation across the aggregated group. Aggregation requirements: (1) the owner must hold at least 50% ownership in each business; (2) at least two of five integration tests must be met (same products/services, same customers, shared employees, shared facilities, or interdependent operations). The aggregation election is binding in future years unless the businesses change materially — consult a CPA before electing.

Documents

What you'll need

Schedule C net profit (SMLLC) or Schedule K-1 (partnership/S-Corp) — QBI starts with net business income before the QBI deduction itself
W-2 wages paid by the business — for businesses above the income threshold: total W-2 wages paid to employees (Box 1 of W-2s) or the S-Corp owner's own W-2 salary; required for the W-2 limitation calculation
UBIA of qualified property — for businesses above the income threshold: original purchase cost of all tangible depreciable property used in the business as of year-end; needed to calculate the 2.5% UBIA component of the W-2/UBIA limitation
Taxable income calculation — the QBI deduction cannot exceed 20% of taxable income (minus net capital gains); prepare a preliminary taxable income estimate before calculating the QBI deduction
SSTB determination documentation — if your business is near the SSTB boundary (e.g., a consulting-adjacent business), maintain documentation of the services provided, client agreements, and revenue sources to support the classification

Process

Step by step

Determine if your business is a Specified Service Trade or Business (SSTB) Review the SSTB list under IRC §1202(e)(3)(A) and Treasury Regulations §1.199A-5. If your business is in health, law, accounting, actuarial science, performing arts, consulting, athletics, financial services, or brokerage, it is an SSTB. Engineering and architecture are NOT SSTBs and always qualify. If your business is an SSTB and your income is below the threshold, you still qualify for the QBI deduction. If income is within the phase-in range, the deduction phases out. Above the threshold, your QBI deduction from the SSTB is $0. The 'consulting' SSTB category is broad — it includes business-process consulting, management consulting, and advisory services but generally excludes hands-on service providers whose income is derived from performing a skill (e.g., a contractor who builds vs. a consultant who advises on building).
Calculate your Qualified Business Income (QBI) For a SMLLC filing Schedule C: QBI = net profit from Schedule C. Subtract from this: reasonable compensation you received (if any), capital gain income included in Schedule C, and any §1231 gain treated as long-term capital gain. For a multi-member LLC (K-1): QBI is your allocated share of partnership ordinary business income/loss as shown on Schedule K-1, Box 1 (adjusted for separately stated items). For an S-Corp-elected LLC: QBI = your allocated share of S-Corp ordinary income (Schedule K-1, Box 1) minus your W-2 salary (which is not QBI). Losses from a qualified business reduce QBI and may create a QBI loss carryforward that offsets QBI in future years.
Compare your taxable income to the income thresholds Calculate your taxable income (Form 1040, Line 15 — before the QBI deduction). Compare to the thresholds: Below the lower threshold (approx. $197,300 single / $394,600 MFJ for 2025 — verify in IRS Rev. Proc.): your QBI deduction is 20% of QBI, capped at 20% of taxable income. W-2/UBIA and SSTB limitations do not apply. Within the phase-in range (approx. $197,300–$247,300 single / $394,600–$494,600 MFJ for 2025): the W-2/UBIA limitation and SSTB limitation phase in proportionally across the range. Above the upper threshold: full W-2/UBIA limitation applies; SSTB businesses get $0 QBI deduction.
Apply the W-2 wage and UBIA limitation (above the income threshold) Calculate the W-2/UBIA limitation: (1) Option A — 50% of W-2 wages paid by the business. (2) Option B — 25% of W-2 wages + 2.5% of UBIA of qualified property. Use the greater of Option A or Option B as the W-2/UBIA cap. Your §199A deduction equals the lesser of: (a) 20% of QBI, or (b) the W-2/UBIA cap. If the business has no W-2 wages and no qualified property (common for solo SMLLC consultants), the W-2/UBIA cap is $0 and the §199A deduction is $0 above the threshold. Key planning lever: paying a W-2 salary (as an S-Corp owner) or hiring employees increases W-2 wages and raises the §199A limitation cap.
Apply the overall taxable income cap The §199A deduction cannot exceed 20% of taxable income minus net capital gains (Form 1040 taxable income minus net capital gains reported on Schedule D). This cap applies regardless of QBI or the W-2/UBIA limitation. Example: your QBI deduction calculated in Steps 3–4 is $40,000, but your taxable income (minus capital gains) is $160,000. The cap is $32,000 (20% × $160,000). Your actual §199A deduction is $32,000 — the lesser of $40,000 (QBI-based) and $32,000 (income cap). The taxable income cap rarely limits the deduction for most filers — it becomes relevant when QBI is high relative to total income (e.g., large business losses from other sources reduce taxable income below the QBI amount).
Complete Form 8995 or Form 8995-A and report on Form 1040 Below the threshold: use Form 8995 (Qualified Business Income Deduction Simplified Computation). Above the threshold, or if aggregating multiple businesses, or if the business is an SSTB: use Form 8995-A and its schedules. The QBI deduction from Form 8995 or 8995-A flows to Form 1040, Schedule 1, Line 13 (and then to Form 1040, Line 13 as a below-the-line deduction). The deduction reduces taxable income but does not reduce self-employment income — it does not lower your SE tax liability, only your federal income tax.

Costs

What it costs

Item	Amount	Notes
IRS Form 8995 or Form 8995-A — QBI deduction calculation	$0 filing fee	Form 8995 is used by most small-business owners below the income threshold (simpler computation). Form 8995-A is required for high-income filers (above the threshold), SSTB businesses, and those electing to aggregate multiple businesses. Both are included in TurboTax Self-Employed and H&R Block Self-Employed at no additional cost.
CPA consultation — QBI planning and SSTB classification	$200–$600 one-time; $150–$400/year ongoing	Whether your business qualifies as an SSTB, whether to elect S-Corp status to generate W-2 wages for the limitation, and whether aggregation is beneficial are judgment calls that require professional analysis. The cost of misclassification (claiming the QBI deduction when you are an SSTB above the threshold) can result in substantial tax underpayment plus interest and penalties.
S-Corp election analysis — W-2 wages to support the QBI W-2 limitation	$500–$1,500 one-time analysis	High-income LLC owners without employees may increase their §199A deduction by electing S-Corp status and paying a reasonable W-2 salary. The salary creates W-2 wages that satisfy the W-2/UBIA limitation. However, S-Corp election also creates payroll compliance costs (quarterly payroll returns, year-end W-2 filing, payroll service fees). The breakeven analysis requires a CPA.

FAQ

Common questions

Does an LLC automatically qualify for the 20% QBI deduction?

Most LLCs do qualify — with two important exceptions: (1) If your LLC is a Specified Service Trade or Business (SSTB) and your total taxable income exceeds approximately $241,950 (single) / $483,900 (MFJ) for 2024, your QBI deduction from the SSTB is $0. Engineering, architecture, and most product-based businesses are not SSTBs and always qualify. (2) If your income exceeds the threshold and your LLC has no W-2 wages and no significant qualified property (common for solo consultants and freelancers), the W-2/UBIA limitation may reduce your deduction to $0 even for non-SSTB businesses. Below the income threshold, almost all LLCs with profitable businesses qualify for the full 20% deduction.

What businesses are classified as Specified Service Trades or Businesses (SSTBs)?

The SSTB list under IRC §199A and Treasury Regulations includes: health (physicians, dentists, nurses, therapists, pharmacists, veterinarians); law (attorneys, paralegals, legal consultants); accounting (CPAs, enrolled agents, bookkeepers, tax preparers); actuarial science; performing arts (actors, musicians, entertainers); consulting (providing professional advice — business consulting, management consulting, coaching); athletics (professional athletes, coaches, trainers); financial services (investment advisers, financial planners, broker-dealers); brokerage services; and investment and trading in securities or commodities. Engineering and architecture are explicitly NOT SSTBs. If your business provides a mix of SSTB and non-SSTB services, review Treasury Regulation §1.199A-5 for the rules on mixed-service businesses.

How does the QBI deduction work for an S-Corp-elected LLC?

For an S-Corp-elected LLC, QBI is the business's ordinary income allocated to you on Schedule K-1 (Box 1), minus your W-2 salary from the company. Your W-2 salary is excluded from QBI because it is already deducted as a business expense at the entity level. However, your W-2 salary counts as W-2 wages for the W-2/UBIA limitation — which is the key advantage of S-Corp election for high-income LLC owners. By paying yourself a reasonable W-2 salary, you create W-2 wages that support the §199A limitation, potentially unlocking the deduction for owners above the income threshold. The S-Corp election trade-off: payroll compliance costs vs. §199A benefit (and SE tax savings from the salary/distribution split).

Is rental income from an LLC eligible for the QBI deduction?

Generally, yes — if the rental activity constitutes a 'trade or business.' IRS Notice 2019-07 provides a safe harbor: rental real estate qualifies as a trade or business for §199A purposes if (1) separate books and records are maintained for each rental activity; (2) 250 or more hours per year are spent on rental services (owner + employees + agents); and (3) the owner maintains contemporaneous records of hours spent. Rental activities that don't meet the safe harbor may still qualify as a trade or business under facts-and-circumstances analysis. Triple-net (NNN) leases rented to commonly owned businesses are eligible if the NNN rental and the operating business are commonly controlled and the rental meets the trade or business test. Real estate held as an investment (passive) without active management does not qualify.

Will the QBI deduction expire?

The §199A deduction is scheduled to expire after December 31, 2025, under the TCJA's sunset provisions. As of 2026, whether the deduction has been extended depends on Congressional action — monitor IRS.gov and major tax news sources for the current status. Multiple bills proposing to extend or make permanent the §199A deduction have been introduced in Congress. If the deduction expires as scheduled, pass-through LLC owners will lose the 20% QBI benefit beginning in the 2026 tax year, effectively increasing their federal income tax rate relative to C-corporations (which have a permanent 21% flat rate). Business owners should consult their CPA about entity structure and income planning in light of the potential expiration.

Can I take the QBI deduction if I also take the standard deduction?

Yes. The §199A QBI deduction is available to all qualifying taxpayers regardless of whether they itemize deductions or take the standard deduction. It is a 'below-the-line' deduction that reduces taxable income on Form 1040, line 13. This is a significant advantage over pre-TCJA deductions that required itemizing. The deduction cannot reduce taxable income below $0 (it cannot create an income tax refund through the QBI deduction alone), and it does not reduce self-employment income or SE tax.

Provenance

Legal basis & official sources

Last verified 2026-05-08.

IRC §199A (Deduction for qualified business income of pass-through entities — 20% QBI deduction; SSTB definition; W-2 wage and UBIA limitation; income thresholds; aggregation rules). Treasury Regulation §1.199A-1 through §1.199A-6 (comprehensive regulatory framework for §199A). IRS Notice 2019-07 (safe harbor for rental real estate as a qualified trade or business). IRS Publication 535 (Business Expenses — QBI deduction overview). IRS Form 8995 instructions (below-threshold filers). IRS Form 8995-A instructions (above-threshold filers; SSTB; aggregation).

Direct filing portal: https://www.irs.gov/forms-pubs/about-form-8995

If you skip this

Missing the largest single deduction available to pass-through LLC owners — for a $200,000 QBI business below the threshold, the §199A deduction is $40,000; failing to claim it costs $8,800–$14,800 in federal income tax (22–37% bracket) annually; over the life of the TCJA sunset period, this is potentially $44,000–$74,000 in avoidable taxes
SSTB misclassification — claiming the QBI deduction on a business that qualifies as an SSTB above the income threshold results in tax underpayment, interest, and potential negligence penalties; consult a CPA if your business provides professional advice or services in health, law, accounting, or consulting
Failing to elect S-Corp status to unlock the W-2 limitation — high-income solo LLC owners (above the threshold) with no employees get $0 §199A deduction due to the W-2/UBIA cap; electing S-Corp and paying a reasonable W-2 salary can restore some or all of the deduction; the payroll compliance cost is often far less than the tax savings
Not monitoring the 2025 sunset — the §199A deduction expires after December 31, 2025, absent Congressional action; business owners who plan revenue timing, retirement plan contributions, and entity structure around the availability of §199A should monitor legislation and plan for the possibility that the deduction ends
Ignoring QBI loss carryforwards — net QBI losses carry forward and reduce future QBI deductions; high-loss years (common in startups) can eliminate §199A benefits for multiple subsequent years; understanding carryforward mechanics prevents surprising deduction shortfalls in later profitable years

Official sources

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§ B Building permits

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Disclaimer: Informational only, not legal or tax advice. Rules change, so confirm with a business attorney or CPA before you act.