Section 199A QBI Deduction: 2026 Guide | Manay CPA

The Section 199A Qualified Business Income (QBI) deduction allows many eligible business owners to deduct up to 20% of their qualified business income, making it one of the most valuable tax benefits available to pass-through businesses. Originally introduced by the 2017 Tax Cuts and Jobs Act (TCJA), the deduction was designed to help pass-through entities remain competitive after the corporate tax rate was reduced from 35% to 21%. Legislation enacted in 2025 made the deduction permanent and expanded the income phase-in ranges beginning in 2026.

In this guide, you’ll learn the 2026 QBI income limits, SSTB eligibility rules, W-2 wage and qualified property limitations, and when an S Corporation election may increase your tax savings.

1. What Changed for Section 199A in 2026?

The deduction is now permanent

Under prior law, the 20% deduction was set to vanish entirely starting in 2026, which left pass-through business owners —sole proprietors, partnerships, and S corporations— facing real uncertainty heading into any multi-year plan.

New legislation removed that sunset. The QBI deduction is now a permanent feature of the tax code rather than a temporary provision. For entity selection, compensation planning, and multi-year forecasting, that permanence matters: decisions that once had to be hedged against a 2026 cliff can now be built on a stable, long-term foundation.

The phase-in ranges are wider

Alongside making the deduction permanent, the applicable phase-in ranges — the income band within which wage and property limitations begin to apply — were widened. For 2026, the official thresholds are:

2. What Is the Section 199A QBI Deduction?

At its simplest, the QBI deduction lets eligible owners of pass-through businesses deduct up to 20% of qualified business income.

For an owner of an SSTB, the final deduction is generally limited to the lesser of two amounts:

1. 20% of your QBI (plus 20% of any qualified REIT dividends and qualified PTP income, if applicable), or
2. 20% of your taxable income, less net capital gain.

That second limitation exists so the deduction never exceeds a share of your overall taxable income — regardless of how large your business profit was on paper.

Who may qualify?

Owners of sole proprietorships, partnerships, S corporations, and certain trusts and estates with domestic qualified business income may qualify, provided their business is a genuine U.S. trade or business.

Who generally does not qualify?

C corporations are excluded entirely — the deduction applies only to pass-through income. Wage income from being an employee also does not qualify, even if that same person separately owns a pass-through business.

Partial qualification: a gray area

Some owners fall into a middle zone — for example, an SSTB owner inside the phase-in range, or a business with QBI but insufficient W-2 wages relative to income. These cases do not cleanly fall into “qualifies” or “does not qualify” and require the specific calculation described in Section 5.

3. What Counts—and Does Not Count—as QBI?

4. How the 2026 Income Thresholds Work

Below the threshold

If your taxable income falls below the applicable 2026 threshold ($201,750 single / $403,500 MFJ), the calculation is at its simplest:

• Eligible business income can generally reach the full 20% deduction, regardless of whether the business is an SSTB.
• W-2 wage and UBIA (unadjusted basis immediately after acquisition) limitations do not yet apply.
• The overall taxable-income limitation still applies — the deduction cannot exceed 20% of taxable income less net capital gain.

Within the phase-in range

Once taxable income enters the phase-in band, two things happen at once:

• The W-2 wage/UBIA limitation begins to phase in gradually for all business types.
• For SSTBs specifically, the deduction itself begins to phase out — shrinking proportionally as income rises through the range.

This zone requires an individual, business-by-business calculation; a generic percentage cannot be applied reliably here.

Above the upper limit

For non-SSTBs, once taxable income exceeds the upper end of the phase-in range, the deduction is capped at the greater of:

• 50% of the W-2 wages allocable to the business, or
• 25% of W-2 wages, plus 2.5% of the unadjusted basis (UBIA) of qualified property.

For SSTBs, above the upper threshold the deduction is generally eliminated entirely — SSTB income no longer qualifies for the QBI deduction at all once taxable income clears the top of the phase-in range.

Common SSTB categories

Specified service trades or businesses generally include:

• Health
• Law
• Accounting
• Consulting
• Financial services
• Brokerage services
• Athletics
• Performing arts
• Investment management
• Trading and dealing in securities, partnership interests, or commodities

5. How to Calculate the QBI Deduction in 2026

1. 1. Determine each qualified trade or business you own.
      Start by identifying every qualified trade or business you own. Each business may be subject to different rules depending on its activities, ownership structure, and income level.
   2. Calculate QBI separately for each business.
      Qualified Business Income must generally be calculated separately for each trade or business. QBI typically includes the net ordinary income from business operations after deductible business expenses but excludes items such as capital gains, dividends, most investment income, and certain other excluded amounts.
   3. Identify whether each business is an SSTB or non-SSTB.
      Next, determine whether each business is a Specified Service Trade or Business (SSTB) or a non-SSTB. This distinction becomes especially important if your taxable income exceeds the applicable thresholds because SSTBs may lose some or all of the deduction, while non-SSTBs may instead become subject to wage and property limitations.
   4. Calculate your taxable income before the QBI deduction.
      Before calculating the deduction itself, determine your taxable income after all other allowable deductions but before claiming the Section 199A deduction. This amount determines whether income limitations apply and establishes the overall cap on the deduction.
   5. Compare that taxable income against the applicable 2026 thresholds.
      Taxpayers below the threshold generally receive the deduction without the wage and property limitations, while those above the threshold may need to apply additional rules. If income falls within the phase-in range, the limitations are introduced gradually rather than all at once.
   6. Apply for the W-2 wage and UBIA limitations where required.
      If your taxable income exceeds the applicable threshold, calculate the wage and qualified property limitations for each non-SSTB. The deduction may be limited based on:—W-2 wages paid by the business,
      —Unadjusted Basis Immediately After Acquisition (UBIA) of qualified depreciable property, or
      —A combination of both, depending on which limitation produces the larger allowable deduction.These rules are intended to tie larger deductions to businesses with employees or significant business assets.
   7. Apply the overall taxable-income limitation (20% of taxable income less net capital gain).
      After calculating the business-level deduction, compare the result with the overall limitation. Your total Section 199A deduction cannot exceed 20% of your taxable income reduced by your net capital gain. Even if your businesses generate enough QBI for a larger deduction, this overall cap may reduce the amount you can claim.
   8. Add in any qualified REIT dividends or PTP income, calculated separately and not subject to the wage limitation.
      Qualified REIT dividends and Publicly Traded Partnership (PTP) income are calculated separately from business QBI. These items may also qualify for a 20% deduction but generally are not subject to the W-2 wage and UBIA limitations. After calculating these amounts separately, combine them with your business QBI deduction before applying the overall taxable income limitation.
   9. Apply any qualified business loss carryovers from prior years.
      If you had a qualified business loss in a prior year, it generally carries forward and reduces your current-year QBI before the deduction is calculated.
   10. Report the deduction on Form 8995 (simplified) or Form 8995-A.
       Finally, report the deduction on your federal income tax return using the correct IRS form:
       —Form 8995 is generally used when your taxable income is below the applicable threshold
       —Form 8995-A is required when your taxable income exceeds the threshold

A simple example: A single filer with $120,000 of QBI from a consulting business and $90,000 of taxable income (below the $201,750 threshold) can generally claim the full 20% —$24,000— subject only to the taxable-income limitation, since neither the SSTB phase-out nor the wage/UBIA test applies yet at this income level.

6. International and Foreign-Owned Business Considerations

This is where generic tax content usually stops short — and where the details actually matter for internationally connected clients.

To qualify as QBI, income must be effectively connected with the conduct of a U.S. trade or business. Foreign-source business income is not automatically treated as QBI simply because the owner also runs a U.S. entity.

Separately, ownership structure carries its own restrictions: nonresident alien individuals cannot be shareholders of an S corporation. Owning an LLC does not, by itself, mean that LLC is eligible to make an S-corp election — the individual owner’s status as a U.S. citizen, green card holder, or resident alien for tax purposes must be independently confirmed before that election is considered. Cross-border income allocation, applicable tax treaties, and separate foreign information-reporting obligations all require their own analysis, distinct from the QBI calculation itself.

7. Common Section 199A Mistakes

Even experienced business owners can misunderstand how the Section 199A deduction is calculated. The rules involve multiple definitions, income thresholds, and limitations, so a small mistake can reduce your deduction or create problems if the IRS reviews your return. Below are some of the most common errors to avoid.

Using Gross Revenue Instead of Qualified Business Income

The Section 199A deduction is based on qualified business income (QBI)—not your business’s gross revenue. QBI generally consists of the net profit from a qualified trade or business after deducting ordinary and necessary business expenses. Using total sales or gross receipts instead of net qualified income can significantly overstate the deduction.

Assuming All Pass-Through Income Qualifies as QBI

Not every dollar reported from a pass-through business is considered qualified business income. Certain types of income—such as capital gains, dividends, interest income unrelated to the business, and reasonable compensation paid by an S corporation—are excluded from QBI. Understanding which income is eligible is essential for calculating the deduction correctly.

Overlooking the Taxable Income Limitation

Your Section 199A deduction cannot exceed 20% of your taxable income (after certain adjustments and before the QBI deduction itself). Some taxpayers calculate the deduction solely from business income and overlook this separate limitation, which can reduce the allowable deduction even when the business generates substantial profits.

Misclassifying a Business as an SSTB or Non-SSTB

Whether your business is classified as a Specified Service Trade or Business (SSTB) can have a significant impact on your eligibility once taxable income exceeds certain thresholds. Incorrectly categorizing a business may result in claiming a deduction that is partially or entirely unavailable or missing a deduction that should have been claimed.

Including Reasonable Compensation in QBI

For S corporation owners, reasonable compensation paid as W-2 wages is not qualified business income. These wages are deductible business expenses for the corporation but are specifically excluded from the QBI calculation. Including them may incorrectly inflate the deduction and increase the risk of IRS adjustments.

Forgetting to Carry Forward Prior-Year QBI Losses

If your qualified business income was negative in a prior year, that loss generally carries forward and reduces QBI in future years before a deduction can be claimed. Failing to account for these carryforward losses may lead to an overstated deduction and possible corrections later.

Planning an S Corporation Election for an Ineligible Nonresident Owner

An S corporation election can increase Section 199A tax savings for some business owners by reducing self-employment taxes, but it is not available to every taxpayer. Nonresident aliens generally cannot be S corporation shareholders. Electing S corporation status without confirming shareholder eligibility can invalidate the election and create significant tax and compliance issues. Business owners with international ownership should evaluate their entity structure carefully before making this election.

Conclusion

Section 199A’s permanence is a genuine planning win — but it shifts the real work from “will this deduction exist” to “how much of it will I actually get.” The 20% figure is a ceiling, not a guarantee: income level, entity structure, W-2 wages, and SSTB status all interact to determine the real number.