How do I maximize the QBI deduction?

What it is

Section 199A gives individuals, trusts, and estates a deduction for income from sole proprietorships, partnerships, S corporations, and some trusts, plus qualified REIT dividends and publicly traded partnership income. C corporations are not eligible.

The One Big Beautiful Bill Act (P.L. 119-21) made the deduction permanent, widened the phase-in ranges, and added a minimum deduction starting in 2026. The deduction is taken after adjusted gross income and does not require itemizing.

What the law says

IRC §199A(a) allows a deduction equal to the lesser of the combined qualified business income amount or 20% of the excess of taxable income over net capital gain. Above the threshold amount, §199A(b)(2) limits the deduction for each business to the greater of 50% of W-2 wages or 25% of W-2 wages plus 2.5% of the unadjusted basis of qualified property. Under §199A(d)(3), a specified service trade or business is excluded for taxpayers above the threshold, with a phase-in over the range.

For tax years beginning after December 31, 2025, the phase-in range is $75,000, or $150,000 for joint returns. Rev. Proc. 2025-32 sets the 2026 threshold amount at $403,500 for joint returns and $201,750 for most other filers, so the phase-in ends at $553,500 joint and $276,750 single.

New §199A(i) provides that an applicable taxpayer, one with at least $1,000 of QBI from active trades or businesses in which the taxpayer materially participates, receives a deduction of at least $400. Both amounts are indexed for years after 2026. Treas. Reg. §§1.199A-1 through 1.199A-6 provide the computational rules.

Requirements and tests

The deduction depends on:

• Taxable income before the deduction, compared with the threshold and phase-in range.
• Whether each business is a specified service trade or business (health, law, accounting, actuarial science, performing arts, consulting, athletics, financial and brokerage services, and similar fields).
• W-2 wages paid by each business and the unadjusted basis of its qualified property.
• QBI after related deductions, and any carryforward of prior QBI losses.
• Net capital gain, including qualified dividends, which reduces the taxable income limit.
• Material participation, for the $400 minimum.

How it works

Below the threshold, the deduction is generally 20% of QBI, limited to 20% of taxable income minus net capital gain. The taxable income limit often matters more than people expect, because the standard deduction reduces taxable income but not QBI.

Inside the phase-in range, a specified service business's QBI, wages, and property are reduced proportionally, and for all businesses the wage and property limit is phased in. Above the range, a specified service business produces no QBI deduction for that owner, and other businesses are limited to the wage and property amounts.

Planning is about facts, not labels. Reasonable W-2 wages from an S corporation, investments in qualified property, grouping of businesses under the aggregation rules, and retirement contributions that reduce taxable income can all change the result. Each change has other tax effects that need to be modeled together.

Report the deduction on Form 8995 or Form 8995-A.

The deduction does not reduce adjusted gross income, self-employment tax, or the net investment income tax. It also interacts with other planning: retirement contributions lower both QBI and taxable income, S corporation wages lower QBI but can raise the wage limit for higher-income owners, and a pass-through entity tax election lowers QBI. Because these effects pull in different directions, model them together before year-end rather than one at a time.

Risks and IRS scrutiny

Common problems include ignoring the taxable income limit, failing to reduce QBI for related deductions, misclassifying a specified service business, including a partner's §707(c) payments for services or an S corporation owner's reasonable compensation in QBI, and applying the aggregation rules without the required statement. The IRS can challenge business separations designed to avoid the specified service rules.

Who it is not for

This deduction is not available to C corporations or their shareholders. It is not for specified service business owners with taxable income above the phase-in range. It is not something to assume is always 20% of profit; the limits often reduce it. And it does not apply to wages you earn as an employee.

How ebotCPA helps

We compute your deduction under the current rules, test specified service status and aggregation, and model the effect of wages, property, and retirement contributions before year-end.

Book a $497 Case Analysis to have Ebot Mbi, CPA, EA review your facts before you act.

Primary sources

1. 26 U.S.C. §199A. Qualified business income deduction.

   “an amount equal to 20 percent of the excess (if any) of—”

   Sets the 20% deduction, the taxable income limit, the wage and property limits, the SSTB rules, and the $400 minimum.

2. Treas. Reg. §1.199A-1. Operational rules for the QBI deduction.

   Explains how to compute the deduction below and above the threshold.

3. Treas. Reg. §1.199A-5. Specified service trades or businesses.

   Defines specified service trades or businesses and the de minimis rules.

4. Rev. Proc. 2025-32. 2026 inflation adjustments.

   Sets the 2026 threshold amounts at $403,500 joint and $201,750 single, the $32,200 joint standard deduction, and the $400 minimum and $1,000 eligibility amounts.

5. Pub. L. 119-21, §70105. One Big Beautiful Bill Act: QBI changes.

   Made §199A permanent, widened the phase-in ranges, and added the minimum deduction for tax years beginning after 2025.

Frequently asked questions