QBI Deduction for LLC and S-Corp Owners: A 2026 Guide

What Is the QBI Deduction?

The QBI deduction for S-corp owners is a deduction of up to 20 percent of qualified business income under IRC Section 199A. It’s claimed on the shareholder’s Form 1040, not on the S-corp’s Form 1120-S. That split is where the confusion starts. Every lever that sets its size sits on the business side, which is why indinero’s tax team models it against your payroll register and your books, not in March.

Section 199A isn’t just a line on a personal return. It’s the output of four business-side decisions.

The statute sets the deduction as the lesser of two numbers: the combined qualified business income amount, which includes a separate 20 percent component for qualified REIT dividends and publicly traded partnership income, or 20 percent of the excess of taxable income over net capital gain. The IRS qualified business income deduction page states the same test.

• It isn’t an itemized deduction. IRC Section 63(b)(3) lists it among the deductions available to individuals who don’t itemize, so an owner taking the standard deduction still gets the full amount.
• It never reduces AGI. The deduction sits below the adjusted gross income line, which is the biggest reason most states deliver nothing from it.
• It’s permanent, with a small floor. The One Big Beautiful Bill Act struck the sunset and added a minimum deduction at Section 199A(i): at least $400 for a taxpayer with at least $1,000 of QBI from active qualified businesses, for tax years beginning after December 31, 2025.

That floor matters for a side entity or a first partial year. Not for an operating company. The rest of the bill sits in our One Big Beautiful Bill business tax guide.

Federal Tax Obligations

Federal reporting runs through two forms, Form 8995 and Form 8995-A, and which one you file depends on taxable income before the QBI deduction. Every figure below is for tax years beginning in 2026, from Rev. Proc. 2025-32, section .26, in Internal Revenue Bulletin 2025-45.

Filing status	2026 threshold amount	Top of 2026 phase-in range	Band width
Married filing jointly	$403,500	$553,500	$150,000
Married filing separately	$201,775	$276,775	$75,000
All other returns	$201,750	$276,750	$75,000

Those rows define three computations. At or below the threshold, you take 20 percent of QBI with no wage test and no service-business disallowance. Inside the range the limitations phase in proportionally. Above the top they apply in full.

The band got wider for 2026. Section 70105 of the One Big Beautiful Bill Act replaced the old $50,000 and $100,000 phase-in widths with $75,000 and $150,000.

The third variable is whether your business is a specified service trade or business. Treas. Reg. 1.199A-5(b)(1) lists the fields, among them health, law, accounting, consulting, athletics, financial services, brokerage, investing, trading, and any business whose principal asset is the reputation or skill of its employees or owners. A software or product company usually isn’t one. The regulation’s own example puts a software licensor that also advises customers and helps implement in the business of licensing software, not consulting.

The line to watch is separately billed advice. Under 1.199A-5(c)(1), a business with $25 million or less of gross receipts isn’t an SSTB if less than 10 percent of gross receipts come from a listed field, and the test tightens to less than 5 percent above $25 million. The AICPA’s list of specified service trades or businesses is a useful cross-check. Knowing which side of 10 percent you’re on before year end belongs inside a business tax services engagement, not the filing-season scramble.

Form 8995 and Form 8995-A

Form 8995, Qualified Business Income Deduction Simplified Computation, is the short form. The Instructions for Form 8995 direct individuals and eligible estates and trusts to use it when taxable income before the QBI deduction is at or below the threshold amount and they aren’t a patron of a specified agricultural or horticultural cooperative. At that income level SSTB income fully qualifies, and there’s no wage test and no Schedule A.

The Instructions for Form 8995-A require the long form when taxable income before the deduction exceeds the threshold amount, or when you’re a cooperative patron at any income level. It carries four schedules.

• Schedule A applies the SSTB applicable percentage inside the phase-in range.
• Schedule B reports the aggregation of multiple trades or businesses.
• Schedule C handles loss netting and the negative QBI carryforward.
• Schedule D handles the patron reduction for agricultural and horticultural cooperatives.

The trigger is taxable income. Not revenue, not entity type, not the size of the K-1. A $12M-revenue S-corp whose owner has heavy depreciation and large retirement contributions can land on the short form. A $1.5M consulting LLC with a high-earning spouse lands on the long one.

The W-2 Wage and Property Caps

The 199A W-2 wage limitation applies above the top of the phase-in range. Section 199A(b)(2) caps the deductible amount for each qualified trade or business at the lesser of 20 percent of that business’s QBI, or the greater of two branches:

• 50 percent of W-2 wages with respect to the business, or
• 25 percent of W-2 wages plus 2.5 percent of the unadjusted basis immediately after acquisition, or UBIA, of all qualified property.

Two branches exist because two kinds of business exist. The first serves payroll-heavy companies, the second capital-heavy ones that carry large depreciable assets and thin payroll. A SaaS company almost always wins on the first.

W-2 wages has a deadline attached. Treas. Reg. 1.199A-2 defines it by reference to Sections 6051(a)(3) and (8), then excludes any amount not properly included in a return filed with the Social Security Administration on or before the 60th day after the due date, including extensions. UBIA runs on a different clock: basis at the placed-in-service date, no reduction for depreciation or expensed amounts, held in the pool through the later of 10 years or the last full year of the recovery period. Expensing an asset under Section 179 or bonus depreciation doesn’t pull it out of UBIA.

Inside the band the limitation phases in proportionally. Take a 2026 single filer with a non-SSTB S-corp: $280,000 of pre-compensation profit, a $60,000 owner salary as the only W-2 wages, no qualified property, QBI of $220,000, and taxable income of $240,000. That’s $44,000 at 20 percent of QBI against a cap of $30,000, the greater of the two branches. The $14,000 excess is cut by the ratio of the $38,250 overage to the $75,000 band, or 51.0 percent, and the deduction lands at $36,860. Under the 2025 threshold of $197,300 and the narrower $50,000 band, identical facts produce $32,044.

State Tax Obligations

Whether your state follows Section 199A depends almost entirely on where its income tax computation starts. The deduction reduces taxable income and never reduces AGI, under Sections 63(b)(3) and 63(d). A state that starts from federal adjusted gross income therefore delivers no 199A benefit at all. A state that starts from federal taxable income picks it up unless it legislates an addback. No-income-tax states make the question moot.

That structural rule is more durable than any 50-state table. Four named examples:

• California doesn’t conform. The Franchise Tax Board’s Summary of Federal Income Tax Changes states that California doesn’t conform under the Personal Income Tax Law to the Section 199A deduction for pass-through entities. A California owner gets the federal deduction and nothing at the state level.
• Colorado allows it, then claws it back. Colorado starts from federal taxable income, so the deduction flows through, but the state return requires an addback of the entire 199A amount above $500,000 of AGI, or $1,000,000 for joint filers, with an exception for taxpayers required to file a federal Schedule F. The addback was set to expire for tax years beginning January 1, 2026. House Bill 25B-1001, approved August 28, 2025, continues it indefinitely.
• Minnesota adds it back. Minnesota moved its starting point to federal AGI, and Minn. Stat. ch. 290 keeps the 199A amount out of the state computation.
• Iowa allows 100 percent. Iowa phased the deduction in as a percentage of the federal amount and reached 100 percent beginning with tax year 2023, under Iowa Code 422.7.

State treatment changes by legislative session. Confirm yours for the filing year.

A pass-through entity tax election interacts with this, and the interaction runs against you. IRS Notice 2020-75 makes a specified income tax payment deductible by the entity in computing its non-separately stated taxable income, outside the individual SALT limitation. That income is QBI, so every dollar of PTET costs a dollar of QBI and 20 cents of deduction. The election is usually still net positive, because the state tax becomes fully deductible instead of capped, but the modeling has to net the 199A give-back against the SALT pickup. And the House proposal to restrict PTET deductions for specified service trades or businesses never became law, whatever 2025-vintage content still says. Year-end sequencing sits in our small business tax planning guide.

Entity-Specific Considerations

Section 199A is a pass-through provision, so your entity form decides whether you have a deduction at all. A C corporation has none. Its earnings aren’t QBI, dividends are expressly excluded from qualified items under Treas. Reg. 1.199A-3, and the entity pays the flat 21 percent rate instead. If you’re still weighing that trade-off, read C-corp vs S-corp and our overview of the types of corporations rather than treating 199A as the deciding factor.

For owners of more than one pass-through, the aggregation election is the lever that matters. Aggregation under Treas. Reg. 1.199A-4 treats several trades or businesses as one for the wage and UBIA caps, which fixes a common structure: one entity holds the payroll, a sibling entity holds the profit. All five conditions have to hold.

1. The same person or group owns 50 percent or more of each business, directly or by attribution under Section 267(b) or 707(b).
2. That ownership runs for a majority of the taxable year, including the last day.
3. All items from each business are reported on returns with the same taxable year.
4. None of the businesses is an SSTB.
5. At least two of three factors are met: the same or customarily bundled products and services, shared facilities or centralized functions, or operations run in coordination with or reliance on one another.

Aggregation is disclosed annually on Form 8995-A Schedule B with the names and EINs of the aggregated businesses, and it has to be reported consistently afterward.

This is where audience breadth stops being a marketing line. Indinero serves LLC, S-Corp, C-Corp, multi-entity, and non-Delaware companies, including bootstrapped and PE-backed owner-operators. That’s the population Section 199A was written for. A firm that only takes venture-backed Delaware C-corps is advising clients with no QBI deduction at all.

Single-Member and Multi-Member LLCs

The qualified business income deduction for an LLC runs on the same statute, with one structural gap that bites above the threshold. An LLC generates no owner W-2 wages.

A single-member LLC owner filing Schedule C isn’t an employee, so there are no owner wages to count toward the 50 percent branch of the cap. Above the top of the phase-in range, a solo consultant with no employees and no qualified property has a cap of zero, which means a deduction of zero.

Multi-member LLCs taxed as partnerships have a related problem. A guaranteed payment is excluded from QBI under Section 199A(c)(4)(B), and it is not W-2 wages under Reg. 1.199A-2, so it doesn’t build the cap either. The partner takes the downside with none of the offsetting upside.

That asymmetry is the strongest tax argument for an above-threshold LLC owner to look at an S election on Form 2553. It isn’t the only argument. Our comparison of sole proprietorship vs LLC and the plain-language what is an LLC explainer carry that decision. Below the threshold none of this matters, because there’s no wage test to fail.

S-Corp Shareholders

Owner salary is the one lever an S-corp shareholder controls, and it points in opposite directions depending on income. Section 199A(c)(4) excludes reasonable compensation from QBI, and Reg. 1.199A-3(b)(2) confirms the S corporation still deducts that compensation in computing its own QBI. Owner salary hits the number twice.

Below the 2026 threshold, no wage test applies, so every dollar of salary is a dollar of QBI that never existed. Take a single filer with a non-SSTB S-corp, $200,000 of pre-compensation profit, and taxable income around $184,000.

• Salary $60,000. QBI $140,000. Deduction $28,000.
• Salary $120,000. QBI $80,000. Deduction $16,000.

The extra $60,000 of salary erased $12,000 of deduction, roughly $2,880 of federal income tax at a 24 percent marginal rate, on top of FICA on the extra wages. The illustration ignores the deductible employer-side payroll tax, which trims QBI slightly further.

Above the top of the band the direction reverses, because salary builds the cap. Setting 20 percent of profit minus wages equal to 50 percent of wages puts the balance point at two sevenths of pre-compensation profit, about 28.6 percent. Take $900,000 of pre-compensation profit, no qualified property, taxable income well above $276,750, and the owner as the only W-2 employee. A $150,000 salary produces a $75,000 deduction. A $257,143 salary produces $128,571. The incremental payroll cost is Medicare only, since the 2026 Social Security contribution and benefit base is $184,500.

Here’s the caveat almost nobody states. The two-sevenths figure only binds when the owner is the dominant W-2 earner. A 40-person company with a $5M payroll already carries a $2.5M cap, far above 20 percent of QBI, so the cap never binds and the advice flips back to holding salary at the defensible floor. Section 199A never justifies paying below a defensible reasonable salary either. Reasonable compensation is a floor, not a dial. For the structural basics, see what is an S-corp.

Common Pitfalls

Most lost QBI deductions trace back to a bookkeeping or payroll failure, not to a bad reading of the statute. These eight cost real money.

1. Trusting a stale source. Treas. Reg. 1.199A-1 still defines the phase-in range at (b)(4) as the threshold amount plus $50,000, or $100,000 on a joint return. OBBBA Section 70105 amended the Code to $75,000 and $150,000, and the regulations were never conformed. The statute controls. The same vintage problem produces the 23 percent rate you’ll see quoted. That rate appeared in an earlier House version and was not enacted. It’s still 20 percent.
2. Missing the 60-day SSA window. Wages not properly included in a return filed with the Social Security Administration by the 60th day after the due date drop out of W-2 wages under Reg. 1.199A-2(b)(2)(iii)(A). A late payroll filing can halve an above-threshold deduction.
3. Running an S-corp with no payroll. A sole shareholder taking only distributions has zero W-2 wages, so above the band with no qualified property the cap is zero and so is the deduction.
4. A K-1 that doesn’t carry the data. Treas. Reg. 1.199A-6 requires a pass-through entity to report each owner’s share of QBI, W-2 wages, UBIA, and SSTB status. If it doesn’t, each unreported positive item is presumed to be zero. Our guide to K-1 forms and tax filing covers the form.
5. Forgetting the deductions that shrink QBI. Under Reg. 1.199A-3(b)(1)(vi), the deductible portion of self-employment tax, self-employed health insurance, and qualified retirement plan contributions reduce QBI proportionately. A large solo 401(k) contribution cuts the base.
6. Mishandling negative QBI. Under Reg. 1.199A-1(d)(2)(iii), net negative QBI carries forward as negative QBI from a separate business, while the W-2 wages and UBIA that produced it are not carried over. Wages are lost. The loss is not.
7. Treating aggregation as reversible. Reg. 1.199A-4(c) requires consistent reporting, and a failure to disclose lets the IRS disaggregate your businesses and bars re-aggregation for the three following years.
8. Assuming rental income qualifies automatically. Whether a rental activity rises to a trade or business is a facts-and-circumstances question. Rev. Proc. 2019-38 offers a safe harbor for a rental real estate enterprise, subject to service, recordkeeping, and return-statement conditions.

How Indinero Handles QBI Planning

Section 199A rewards companies whose books, payroll, and tax position are maintained by the same team, because the deduction is computed from four things that move each other.

Here’s the chain. The deduction comes off the K-1, and the K-1 is only as good as the books. The wage cap depends on payroll filed with the Social Security Administration inside a 60-day window. The salary decision, the SSTB revenue split, the aggregation election, and any PTET election have to be modeled together. Those four things usually sit with four different providers.

Indinero runs them in one monthly engagement. Bookkeeping, accounting, tax, and fractional CFO bundled under one monthly engagement means your 199A position stays consistent with your financial statements instead of being reconstructed in March. Our accounting services team keeps the books the K-1 is built from, and our business tax services team runs the computation and files the return.

Audience breadth is the other half of it. Indinero serves LLC, S-Corp, C-Corp, multi-entity, and non-Delaware companies, which for a pass-through deduction is the population that actually has one. Continuous operations since 2009, 500+ regular customers, and 100+ years combined team experience sit behind that work. Pricing starts at $750/mo, and month-to-month engagements are available.

A 20 percent deduction isn’t a filing-season discovery. It’s the output of decisions you make about salary, revenue mix, and structure during the year. Reach out for a free consultation. We’d love to learn about your business and find where we can help.

Frequently asked questions

The same handful of questions comes up in almost every Section 199A conversation, usually about owner salary, the 2026 thresholds, and whether a software business counts as a service business. Short answers follow, with the full computation and the worked examples above.

Does an S-corp owner’s salary reduce the QBI deduction?

An S-corp owner’s salary reduces the QBI deduction below the 2026 income threshold, and can enlarge it above the top of the phase-in range. Below the threshold, reasonable compensation is excluded from qualified business income, so every extra dollar of salary costs 20 cents of deduction. Above it, salary builds the 50 percent W-2 wage cap, and too little payroll leaves an artificially small cap, though reasonable compensation stays a floor.

What are the 2026 income thresholds for the QBI deduction?

For tax years beginning in 2026, the QBI deduction threshold is $403,500 married filing jointly, $201,775 married filing separately, and $201,750 for other returns. The phase-in ranges top out at $553,500, $276,775, and $276,750, because Section 70105 of the One Big Beautiful Bill Act widened the bands to $150,000 and $75,000. They’re inflation-adjusted annually, so indinero reruns your salary and distribution plan each year rather than at filing.

Is a software company a specified service trade or business?

A software or product company generally isn’t a specified service trade or business, so SSTB status doesn’t disqualify the owner’s Section 199A deduction. Treas. Reg. 1.199A-5 treats a business that licenses software and helps customers implement it as licensing software, not consulting. The risk is separately billed advisory revenue, since a business at or below $25 million of gross receipts becomes an SSTB once 10 percent of receipts come from a listed field.

Can you still claim the QBI deduction in a loss year?

A qualified business net loss produces no QBI deduction for that year, but the loss carries forward and reduces the next year’s qualified business income. IRC 199A(c)(2) treats the net negative amount as negative QBI from a separate business in later years, so the deduction is deferred rather than lost. The W-2 wages and qualified property behind that loss don’t carry over, so loss years belong in the books, not reconstructed at filing.

Can you aggregate several businesses for one QBI calculation?

You can aggregate commonly owned businesses for one QBI calculation under Treas. Reg. 1.199A-4, provided every condition in that regulation is met. The same person or group must own 50 percent or more of each business, none of them can be an SSTB, and two of three integration factors have to hold. Aggregation is an election reported on Form 8995-A Schedule B, and it binds later years, so indinero models it before the return is filed.

Do states follow the federal QBI deduction?

States diverge on the QBI deduction, because it reduces taxable income without reducing AGI, so states that start from federal AGI deliver no benefit. California doesn’t conform at all, Iowa allows 100 percent, Minnesota adds it back, and Colorado allows it then requires an addback above $500,000 of AGI. A pass-through entity tax election also cuts QBI dollar for dollar, and state treatment changes by legislative session, so confirm yours for the filing year.

Does a C-corp owner get any version of the QBI deduction?

A C-corp owner gets no QBI deduction, because Section 199A applies only to pass-through income and C corporation earnings aren’t qualified business income. Dividends are expressly excluded from qualified items under Treas. Reg. 1.199A-3, and the corporation pays the flat 21 percent entity rate instead. That’s an entity-choice question, not a 199A question, and indinero serves LLC, S-Corp, C-Corp, and multi-entity owners, so the comparison runs on your numbers.