The qualified business income deduction under Section 199A is now a permanent fixture of the Internal Revenue Code. The One Big Beautiful Bill Act, signed July 4, 2025, removed the 2025 expiration that had hung over the deduction since the Tax Cuts and Jobs Act of 2017, and in doing so also changed the deduction's mechanics. For the 2025 filing season and beyond, virtually every independent ERO preparing pass-through entity returns needs a current, workflow-ready understanding of how the deduction is calculated, when the complex Form 8995-A is required, how the SSTB phase-out now works under the expanded range, and what the new $400 minimum deduction provision means in practice.
This guide covers the OBBBA changes to Section 199A, Rev. Proc. 2025-32 threshold figures and where to verify them annually, the Form 8995 versus Form 8995-A determination, a step-by-step walkthrough of the Form 8995-A for above-threshold clients, SSTB identification, the expanded phase-out mechanics, the aggregation election procedure under Treas. Reg. 1.199A-4, rental real estate treatment, the QBI interaction with S-corp compensation, loss carryforward rules, and the documentation requirements that protect the deduction if it is challenged.
All threshold figures, phase-in range amounts, and OBBBA-specific provisions cited in this guide must be verified at IRS.gov before applying them to a specific return. Rev. Proc. 2025-32 figures are updated annually; the figures referenced here reflect the research period of July 2026 and may not reflect subsequent inflation adjustments. This guide is informational and does not constitute tax advice for any specific client situation.
For a complete practitioner workflow covering all five OBBBA structural changes to Section 199A, including the $400 minimum deduction, expanded phase-in range, and the bonus depreciation sequencing error that was the top 2026 filing season trap, see our Section 199A / QBI Deduction: OBBBA Practitioner Guide.
OBBBA Changes to Section 199A: What Became Permanent and What Changed
The OBBBA (verify all provisions at IRS.gov; recently enacted) made four material changes to Section 199A that practitioners must understand before preparing any 2025 pass-through return.
Permanence under OBBBA Section 70105
Section 199A was previously scheduled to expire after December 31, 2025. OBBBA Section 70105 removed the sunset provision, making the deduction permanent. Practitioners who had been advising clients to plan around the expiration must revisit those plans. The permanence also strengthens the case for S-corp elections driven by QBI optimization, which in turn heightens IRS scrutiny on reasonable compensation. See the S-corp reasonable compensation practitioner guide for the audit-defense framework when compensation levels are driven in part by QBI strategy.
Expanded SSTB phase-in range
The OBBBA expanded the phase-in range within which SSTB owners receive a partial deduction. Verify the current phase-in range at IRS.gov per Rev. Proc. 2025-32; these figures are updated annually. The research brief period figures indicate a $75,000 single/$150,000 joint expanded range above the basic threshold, but confirm the precise current amounts at IRS.gov before applying them. An SSTB owner whose taxable income falls within the phase-in range is entitled to a partial deduction that requires additional calculation steps on Form 8995-A Schedule B.
New $400 minimum deduction
Verify the current minimum deduction amount at IRS.gov; this provision was enacted by OBBBA Section 70105. A minimum deduction floor was added for taxpayers who meet the qualifying conditions. The interaction between this minimum and the phase-out mechanics requires careful analysis for clients whose income falls near or within the phase-in range: a client whose calculated deduction would be reduced to below the minimum by the phase-out may still be entitled to the minimum if they meet the qualifying conditions. Confirm the precise threshold and conditions at IRS.gov before applying.
Updated income thresholds via Rev. Proc. 2025-32
Rev. Proc. 2025-32 sets the income thresholds above which the W-2 wage and UBIA limitations, SSTB restrictions, and phase-out mechanics apply. Verify current figures at IRS.gov per Rev. Proc. 2025-32 before citing any specific dollar threshold. The figures in this guide are provided as reference for the research period and must be confirmed against the current published Rev. Proc. before use on any return. These thresholds are adjusted annually for inflation.
Rev. Proc. 2025-32: The 2026 Threshold Figures and How to Find Them Each Year
The IRS publishes an annual revenue procedure updating the inflation-adjusted figures for Section 199A. Rev. Proc. 2025-32 applies to the 2025 tax year (returns filed in 2026). Verify current figures at IRS.gov per Rev. Proc. 2025-32 before citing any specific dollar threshold on a client return.
VERIFY ALL THRESHOLD FIGURES AT IRS.GOV
The figures reported in the research brief for Rev. Proc. 2025-32 include threshold amounts for single/HOH/QSS filers, MFS filers, and MFJ filers, as well as the phase-in range end points. Verify current figures at IRS.gov per Rev. Proc. 2025-32 before applying them to any specific return. These are inflation-adjusted annually, and the IRS publishes a new Rev. Proc. each fall covering the following tax year. The correct approach is to pull the current Rev. Proc. from IRS.gov at the start of each filing season and record the applicable figures in your workflow documentation.
Where practitioners use these figures
The threshold figures determine three separate workflow branches: below-threshold returns use Form 8995 and avoid the W-2 wage and UBIA calculations entirely; above-threshold non-SSTB returns use Form 8995-A with the W-2 and UBIA limitation calculations; and above-threshold SSTB returns use Form 8995-A Schedule B with additional phase-out reduction steps. Getting the threshold determination right is the first step; an error here can cause a practitioner to use the wrong form entirely.
Form 8995 vs. Form 8995-A: Which Form to Use and When the Simple Form Fails
The IRS provides two calculation forms for the Section 199A deduction. Form 8995 is the simplified version intended for straightforward below-threshold situations. Form 8995-A is the comprehensive version required whenever additional complexity is present.
When Form 8995 is sufficient
Form 8995 is appropriate only when all of the following conditions are met: (1) the taxpayer's taxable income does not exceed the threshold amount from Rev. Proc. 2025-32 (verify current threshold at IRS.gov); (2) the taxpayer has no income from a Specified Service Trade or Business; (3) no aggregation election is in effect; and (4) the taxpayer has no QBI loss carryforwards from prior years. When all four conditions are satisfied, the deduction is simply 20% of QBI (or 20% of taxable income minus net capital gains, if lower), and Form 8995 can be completed in a few lines.
When Form 8995-A is required
Form 8995-A becomes required the moment any one of the following is present: the taxpayer's taxable income exceeds the threshold; there is any SSTB income (even if the SSTB itself produces no deduction); an aggregation election is in effect; or there are QBI loss carryforwards. Most above-threshold S-corp and partnership clients will require Form 8995-A. A practitioner who uses Form 8995 for a client who should be on Form 8995-A has produced an incorrect return.
COMMON ERROR: MISROUTING ABOVE-THRESHOLD CLIENTS TO FORM 8995
Software like TaxWise will route the return to Form 8995-A when the income data is entered correctly, but a practitioner who overrides the software's form selection or manually adjusts the income inputs may inadvertently produce a Form 8995 calculation for a client who needs Form 8995-A. The result is an overstated deduction if the W-2 wage limitation would have reduced it, or an understated deduction if the phase-in range mechanics would have permitted a partial SSTB deduction. Verify the form selection as part of every pass-through return review.
Form 8995-A Step-by-Step: Completing the Calculation for an Above-Threshold Client
The Form 8995-A calculation follows a structured sequence. Walking through it in order prevents the most common computational errors.
Determine QBI from each qualifying business (Part I)
Part I of Form 8995-A collects QBI from each trade or business separately. QBI is the net amount of qualified items of income, gain, deduction, and loss from a qualifying trade or business. W-2 wages paid by the business are not excluded from the QBI amount reported on Schedule K-1; rather, the W-2 wages are entered separately in Part II as a limitation factor. Capital gains, dividends, and investment income are excluded from QBI. The starting point for each business is the ordinary income or loss reported on Schedule K-1 (Form 1065 or 1120-S), adjusted for any items that are not qualified items under IRC 199A(c)(1).
Apply the W-2 wage and UBIA limitation (Part II)
For clients whose taxable income exceeds the threshold, the deduction cannot exceed the greater of: (a) 50% of the W-2 wages paid by the trade or business, or (b) 25% of W-2 wages plus 2.5% of the unadjusted basis immediately after acquisition (UBIA) of qualified property. This limitation is calculated separately for each business on Part II and then netted across businesses. Businesses that pay no W-2 wages and hold no qualified property produce a zero limitation, which eliminates the QBI deduction for that business regardless of how much QBI it generates.
Handle SSTB income through Schedule B
If any of the client's businesses qualify as SSTBs and the client's taxable income is within or above the phase-in range, complete Schedule B of Form 8995-A. Schedule B reduces the amount of SSTB income, W-2 wages, and UBIA of qualified property that can be taken into account in the QBI calculation. The reduction percentage is a function of where the client's income falls within the phase-in range. Verify the current phase-in range at IRS.gov per Rev. Proc. 2025-32.
Apply prior-year QBI loss carryforwards (Schedule C)
If the taxpayer had a net QBI loss in any prior year, that loss carries forward and must be netted against current-year QBI before calculating the deduction. Schedule C of Form 8995-A handles the carryforward application. A common error is failing to apply a prior-year carryforward when the prior year's Form 8995-A showed a net loss; TaxWise will carry the figure forward automatically if prior-year data is transferred, but practitioners who are picking up a new client should verify the prior-year carryforward on the prior preparer's return.
Apply the overall income limitation (Part III)
The QBI deduction as calculated on Parts I through II and Schedule B cannot exceed 20% of the excess of the taxpayer's taxable income over net capital gain. This overall limitation prevents the deduction from reducing tax on income that is already taxed at preferential rates. Part III applies this cap and produces the final deduction amount that flows to Schedule A of Form 8995-A (the aggregation summary) and ultimately to Form 1040.
FILING SEASON WARNING: QBI AND BONUS DEPRECIATION SEQUENCING
The top practitioner error of the 2026 filing season was running 100% bonus depreciation before modeling Section 199A / QBI. Because bonus depreciation reduces qualified business income and can drive it negative for capital-intensive S-corps and partnerships, calculating it after QBI produces incorrect results. The correct sequence: (1) apply bonus depreciation to determine entity-level income; (2) calculate QBI from that income; (3) then compute the Section 199A deduction. Practitioners who reversed steps 1 and 2 overstated Section 199A deductions on partnership and S-corp returns. Verify your software sequencing before filing any pass-through return with both bonus depreciation and a Section 199A deduction.
SSTB Identification: Determining Whether a Client's Business Is a Specified Service Trade or Business
Incorrectly characterizing an SSTB as a non-SSTB produces an overstated QBI deduction. Incorrectly characterizing a non-SSTB as an SSTB produces an understated deduction (or none at all for above-threshold clients). Both errors are return errors.
The statutory SSTB categories
Section 199A(d)(1)(A) lists the following as SSTBs: health (including medical, dental, nursing, and related services performed by professionals in these fields); law; accounting; actuarial science; performing arts; consulting; athletics; financial services; brokerage services; and any trade or business where the principal asset is the reputation or skill of one or more of its employees or owners. Engineering and architecture were specifically excluded from the SSTB list when Section 199A was enacted.
The reputation-or-skill category: the broadest and most contested definition
The Treas. Reg. 1.199A-5(b)(3)(ix) interpretation of the reputation-or-skill category is narrower than the statutory language suggests. The Treasury regulations limit the reputation-or-skill category to businesses deriving income from endorsements, licensing of the individual's image, or appearance fees. A business that simply employs skilled people but earns income from the products or services those people produce is not an SSTB under the reputation-or-skill category unless the income is tied to the individual's personal fame or reputation.
The incidental services rule
Under Treas. Reg. 1.199A-5(c), a business that is not an SSTB does not become one merely because it provides some incidental services in an SSTB category. The regulation provides that if less than 10% of gross receipts of the trade or business come from SSTB activities, the business is not treated as an SSTB. Practitioners should document the gross receipts breakdown for clients whose businesses have a mixed service profile.
SSTB Phase-Out Mechanics Under OBBBA: The Expanded Phase-In Range and Partial Deduction Calculation
The OBBBA expanded the phase-in range within which SSTB owners may receive a partial Section 199A deduction. Verify the current phase-in range at IRS.gov per Rev. Proc. 2025-32; these figures are updated annually and must be confirmed before applying to any specific return.
How the phase-in reduction works
An SSTB owner whose taxable income exceeds the base threshold but falls within the phase-in range receives a partial deduction. The partial deduction is calculated by determining what percentage of the phase-in range the excess income represents, then reducing the otherwise-allowable QBI, W-2 wages, and UBIA by that percentage. An SSTB owner whose income is exactly at the base threshold receives the full deduction; one whose income falls exactly at the top of the phase-in range receives no deduction.
Common Phase-Out Calculation Errors
The most frequent computational error in the SSTB phase-out is applying the reduction to the QBI deduction amount rather than to the QBI, W-2 wages, and UBIA inputs. The regulations require reducing the inputs; the deduction is then calculated on those reduced inputs. Applying the percentage reduction to the final deduction produces a different (and incorrect) result. TaxWise automates this calculation, but understanding the mechanics is essential for reviewing the output and explaining the result to the client.
VERIFY CURRENT PHASE-IN RANGE AT IRS.GOV
The SSTB phase-in range figures are updated annually by the IRS in the inflation adjustment revenue procedure. Verify the current phase-in range at IRS.gov per Rev. Proc. 2025-32 before applying to any 2025 or 2026 return. Do not rely on prior-year software defaults without verifying the software has been updated to reflect the current year's figures.
The $400 Minimum Deduction: Who Qualifies, How to Calculate It, and Phase-Out Interaction
Verify the current minimum deduction amount at IRS.gov; this provision was enacted by OBBBA Section 70105. The OBBBA added a minimum deduction floor that provides a baseline deduction for taxpayers who meet the qualifying conditions, even when the standard calculation would otherwise reduce the deduction below that floor.
Qualifying conditions
Verify the qualifying conditions for the minimum deduction at IRS.gov. The provision requires the taxpayer to have qualified business income from a qualifying trade or business. The specific income thresholds and qualifying entity types for the minimum deduction must be confirmed against current IRS guidance, as this is a newly enacted provision under the OBBBA and regulatory interpretation is ongoing.
Interaction with the phase-out
The minimum deduction interacts with the SSTB phase-out in a manner that requires careful sequencing: the phase-out first reduces the SSTB allowable amounts, and the minimum deduction floor is then applied to the result. For SSTB clients near the top of the phase-in range whose calculated deduction approaches zero, the minimum deduction may establish a floor. Confirm the precise interaction mechanics at IRS.gov and in the Form 8995-A instructions before applying to a client return.
Documentation for the minimum deduction
Because this is a newly enacted provision with limited IRS guidance, maintain detailed documentation in the client file when applying the minimum deduction. Record the statutory authority (OBBBA Section 70105), the Form 8995-A line references, and any IRS guidance issued after the OBBBA's enactment that addresses the minimum deduction mechanics. Documentation is especially important for provisions under active regulatory development.
Aggregation Election Under Treas. Reg. 1.199A-4: Requirements, Statement, and the Sticky Election Rule
The aggregation election allows a taxpayer who owns multiple qualifying trades or businesses to combine them for purposes of the W-2 wage and UBIA limitations. This is most valuable when one business generates most of the QBI but pays low W-2 wages, while another pays significant W-2 wages but generates less QBI. Aggregating them allows the high-wage business's W-2 amount to count toward the limitation on the high-QBI business.
Common ownership requirement
To aggregate under Treas. Reg. 1.199A-4, the same person or group of persons must directly or indirectly own 50% or more of each business being aggregated for a majority of the taxable year. In addition, all items attributable to each business must be reported on the same federal income tax return in the same taxable year. The businesses must also satisfy at least two of the following three factors: they provide products, property, or services that are the same or customarily offered together; they share facilities or share significant centralized business elements; and they are operated in coordination with or reliance upon one or more of the other businesses in the aggregated group.
Required statement attached to the return
The aggregation election is made by attaching a statement to the tax return. The statement must identify each business being aggregated, state that the common-ownership and integration requirements are met, and describe the basis for aggregation. A missing or incomplete aggregation statement means the election is not valid for that year. Practitioners who aggregate for the first time in a tax year should verify the statement requirements in the current Form 8995-A instructions.
The sticky election rule
Once made, the aggregation election must generally be maintained in subsequent years. Verify the disaggregation exceptions under Treas. Reg. 1.199A-4(c)(2) at IRS.gov, as limited circumstances permit disaggregation (for example, if the businesses no longer meet the common-ownership requirement or a material change in facts makes the existing aggregation no longer permissible). The election is not technically irrevocable in all circumstances, but disaggregation requires factual grounds and documentation of the changed circumstances. Do not characterize the election as fully irrevocable without verifying the disaggregation exceptions against current regulations and any subsequent IRS guidance.
Rental Real Estate as a Trade or Business: The Safe Harbor and Documentation Requirements
Rental real estate generates Schedule E income but is not automatically a trade or business for Section 199A purposes. To claim the QBI deduction on rental income, the rental activity must rise to the level of a trade or business under either the general facts-and-circumstances standard or the safe harbor under Rev. Proc. 2019-38.
The Rev. Proc. 2019-38 safe harbor
Rev. Proc. 2019-38 provides a safe harbor under which a rental real estate enterprise is treated as a trade or business for Section 199A if the taxpayer: (1) maintains separate books and records for the rental enterprise; (2) performs at least 250 hours of rental services per year for tax years beginning before January 1, 2023 (or meets the modified requirement for subsequent years -- verify current requirements at IRS.gov); and (3) attaches a statement to the return confirming safe harbor reliance. A rental enterprise that does not meet the safe harbor may still qualify as a trade or business under the general standard, but the facts-and-circumstances analysis is less certain.
Triple-net leases and the safe harbor exclusion
Properties rented under a triple-net lease arrangement (where the tenant pays taxes, insurance, and maintenance) are specifically excluded from the Rev. Proc. 2019-38 safe harbor. A client with triple-net lease rental income must rely on the general trade-or-business standard for Section 199A qualification, which requires more factual development and documentation in the client file.
QBI Deduction Interaction with S-Corp Compensation: How Wages Reduce QBI and the Planning Tension
The relationship between S-corp compensation and the QBI deduction is one of the most consequential planning tensions a practitioner encounters. Understanding the mechanics prevents both under-compensation (which creates IRS audit risk) and over-compensation (which unnecessarily reduces the QBI deduction).
How W-2 wages affect QBI
Under IRC 199A(c)(4), W-2 wages paid by the trade or business are excluded from the definition of qualified business income. This means that when an S-corp pays a shareholder-employee a W-2 salary, that salary amount reduces the net QBI of the S-corp. The shareholder-employee receives the salary as ordinary income on their W-2, and the S-corp's QBI is reduced by the same amount. For above-threshold clients, the W-2 wages also function as the primary input into the 50% W-2 wage limitation calculation on Form 8995-A, which can increase the maximum allowable deduction even as the wage payment reduces the QBI base.
The planning tension and its limits
The OBBBA's permanence of Section 199A has intensified S-corp elections, and with them the pressure on some practitioners to minimize shareholder-employee compensation in order to preserve QBI. This is the wrong framing. The IRS standard for S-corp compensation is market rate, determined by a facts-and-circumstances analysis. No percentage-based formula satisfies that standard. The compensation decision must be made on defensible market-rate grounds first; the QBI deduction effect is a secondary consequence, not the driver. See the S-corp reasonable compensation practitioner guide for the Watson v. Commissioner framework, BLS OEWS documentation practice, and audit-defense procedure.
State conformity to these QBI mechanics also varies. Practitioners filing returns in California, New York, Illinois, or other major nonconforming states must verify whether the state recognizes the Section 199A deduction for state income tax purposes. See the state OBBBA conformity practitioner guide for the nonconformity matrix and state-level adjustment workflow.
Loss Carryforward Rules: How Prior-Year QBI Losses Affect the Current-Year Deduction
The Section 199A loss carryforward rules are among the most frequently overlooked mechanics in the QBI calculation, particularly when a practitioner is preparing a return for a new client whose prior-year return showed a net QBI loss.
How the carryforward arises
When the aggregate QBI from all of a taxpayer's trades or businesses is a net loss in any taxable year, no deduction is allowed for that year, and the net loss is carried forward to the following year. In the carryforward year, the net loss reduces the QBI from qualifying businesses before the deduction is calculated. If the carryforward amount exceeds the current-year QBI, the excess continues to carry forward.
Finding prior-year carryforwards on a new client's return
When taking on a new client, request the prior-year Form 8995 or 8995-A. If the prior-year form shows a net QBI loss in the carryforward column, that amount must be entered on the current-year Form 8995-A Schedule C. TaxWise will carry this forward automatically when prior-year data is imported, but if the prior-year return was prepared in a different software platform, the practitioner must manually enter the carryforward amount. Failure to apply the carryforward produces an overstated current-year deduction.
Interaction with the $400 minimum deduction
The interaction between loss carryforwards and the minimum deduction provision requires careful attention. Verify at IRS.gov whether a loss carryforward that reduces current-year QBI below zero affects eligibility for the minimum deduction. This interaction is governed by OBBBA Section 70105 and any subsequent IRS guidance; confirm the current position before applying to a client with both a QBI loss carryforward and potential eligibility for the minimum deduction.
Documentation File Requirements: What the Practitioner Must Retain to Support the Deduction
A QBI deduction that cannot be supported by documentation in the practitioner's file is a deduction waiting to be adjusted in an examination. The following items should be in the client file before the return is filed.
QBI calculation workpapers
Retain a copy of the Form 8995-A (and all attached schedules) showing the step-by-step calculation, along with the underlying K-1 or Schedule C data that fed each input. If the QBI was computed from software, retain the software-generated workpapers that show each input and the resulting computation.
SSTB determination documentation
If the practitioner determined that a business is not an SSTB, document the analysis: the business's principal services, how they were evaluated against the Section 199A(d)(1)(A) categories, and the conclusion. If the incidental-services exception was applied, retain the gross receipts breakdown showing SSTB services were below 10%.
Aggregation election statement
If an aggregation election was made, retain a copy of the statement filed with the return and the factual basis for the aggregation: the common-ownership analysis, the two-factor integration test documentation, and the businesses included in the election. This is the primary defense if the IRS challenges the aggregation in an examination.
W-2 wage and UBIA substantiation
The W-2 wage figures used in the limitation calculation should be traced to the W-3 summary or payroll records. The UBIA figures should be traced to the depreciation schedule. The IRS can request substantiation of both inputs in an examination, and a practitioner who cannot produce the source documents is in a weaker position.
Rental real estate safe harbor statement
If the rental real estate safe harbor under Rev. Proc. 2019-38 was used, retain a copy of the statement filed with the return and the underlying records supporting the 250-hour service requirement: contemporaneous time logs or other records of rental services performed.
Engagement letter documentation scope
The engagement letter should specify that QBI deduction calculation is within the scope of the return preparation engagement. See the tax preparer engagement letter and intake guide for scope language that covers pass-through entity returns and their associated deduction calculations.
The OBBBA introduced above-the-line deductions beyond the QBI framework that affect the same small business clients. The Schedule 1-A OBBBA deductions practitioner guide covers the qualified tips deduction, qualified overtime deduction, car loan interest deduction, and enhanced senior deduction, including the MAGI phaseout that interacts with the client's adjusted gross income before the QBI calculation.
IMPORTANT: THIS GUIDE IS INFORMATIONAL, NOT TAX ADVICE
This guide is informational and does not constitute tax advice for any specific client situation. All threshold figures, phase-in range amounts, and OBBBA provisions must be verified at IRS.gov before applying to any return. Rev. Proc. 2025-32 figures are updated annually; verify current figures at IRS.gov. The $400 minimum deduction and SSTB expanded phase-in range are OBBBA-enacted provisions (verify current law at IRS.gov; recently enacted) subject to ongoing IRS regulatory guidance.
Regulated Claims and Verification Requirements
The following items in this guide require verification before applying to any return: (1) Rev. Proc. 2025-32 threshold figures: verify current figures at IRS.gov; updated annually. (2) SSTB phase-in range: verify current phase-in range at IRS.gov per Rev. Proc. 2025-32; these figures are updated annually. (3) $400 minimum deduction: verify current minimum deduction amount at IRS.gov; enacted by OBBBA Section 70105; subject to ongoing regulatory guidance. (4) Aggregation election stickiness: verify the disaggregation exceptions under Treas. Reg. 1.199A-4(c)(2) at IRS.gov. (5) All OBBBA references: verify current law at IRS.gov; recently enacted. The 60/40 wage-to-distribution ratio is NOT an IRS-approved safe harbor for S-corp compensation; the IRS applies a facts-and-circumstances test, not a percentage formula.
Related Guides in the OBBBA and Pass-Through Entity Cluster
The QBI deduction connects to S-corp compensation strategy, state return adjustments, and practice documentation. These guides cover the adjacent practitioner workflows:
- S-Corp Reasonable Compensation Practitioner Guide: Watson v. Commissioner framework, BLS OEWS documentation, and how compensation paid to shareholder-employees affects the QBI deduction under IRC 199A(c)(4)
- State OBBBA Conformity Practitioner Guide: which states do not conform to the Section 199A changes, how to identify state-level adjustments, and the California, New York, and Illinois nonconformity workflows
- Tax Preparer Engagement Letter and Intake Guide: scope language for pass-through entity returns and the documentation checklist that supports the QBI deduction
A business loss year that produces a net operating loss also affects QBI calculations in subsequent carryforward years. The net operating loss practitioner guide covers how the OBBBA 80% limitation interacts with the QBI deduction computation in carryforward years.
Frequently Asked Questions
What did the OBBBA change about the Section 199A QBI deduction?
The One Big Beautiful Bill Act (OBBBA), signed July 4, 2025, made the Section 199A deduction permanent under OBBBA Section 70105. It also expanded the SSTB phase-in range, added a new $400 minimum deduction provision (verify current minimum deduction amount at IRS.gov; enacted by OBBBA Section 70105), and updated income thresholds via Rev. Proc. 2025-32. Verify all OBBBA provisions and current threshold figures at IRS.gov before applying to any return; these provisions are recently enacted and subject to ongoing IRS regulatory guidance.
When must a practitioner use Form 8995-A instead of Form 8995?
Form 8995-A is required whenever: the taxpayer's taxable income exceeds the threshold (verify current threshold at IRS.gov per Rev. Proc. 2025-32); there is any SSTB income; an aggregation election is in effect; or there are QBI loss carryforwards from prior years. Form 8995 is only available when all four of these conditions are absent. Most above-threshold S-corp and partnership clients require Form 8995-A. Using Form 8995 for a client who requires Form 8995-A produces an incorrect return.
Is the Section 199A aggregation election irrevocable?
The aggregation election is not irrevocable in all circumstances, but it must generally be maintained in subsequent years once made. Verify the disaggregation exceptions under Treas. Reg. 1.199A-4(c)(2) at IRS.gov; limited circumstances permit disaggregation, such as when the businesses no longer meet the common-ownership requirement or when a material change in facts makes the existing aggregation impermissible. Do not characterize the election as fully irrevocable without confirming the current exceptions at IRS.gov.
How do S-corp wages paid to a shareholder-employee affect the QBI deduction?
Under IRC 199A(c)(4), W-2 wages paid by the trade or business are excluded from qualified business income. For an S-corporation, wages paid to a shareholder-employee reduce the S-corp's QBI. Those wages also feed the W-2 wage limitation calculation on Form 8995-A Part II, which can increase the maximum allowable deduction ceiling for above-threshold clients. The net effect depends on where the client falls relative to the threshold and the specific W-2 and UBIA amounts involved.
Who qualifies for the $400 minimum QBI deduction and how is it applied?
Verify the current minimum deduction amount and qualifying conditions at IRS.gov; this provision was enacted by OBBBA Section 70105 and is subject to ongoing IRS regulatory guidance. The provision establishes a minimum deduction floor for taxpayers who have qualifying business income and meet the applicable conditions. The interaction between the minimum deduction and the SSTB phase-out, and between the minimum deduction and loss carryforwards, requires confirmation at IRS.gov before applying to any specific client return.