QBI Deduction (Section 199A): How Pass-Through Business Owners Save on Taxes

Business Taxes · BUSINESS TAXES

The qualified business income (QBI) deduction lets eligible self-employed and pass-through business owners deduct up to 20% of their business income. The OBBBA makes it permanent. Here's how it works.

The qualified business income (QBI) deduction — also called the Section 199A deduction — was one of the most significant tax breaks introduced by the 2017 Tax Cuts and Jobs Act. It allows eligible sole proprietors, partnerships, S corporations, and certain trusts to deduct up to 20% of their qualified business income from their taxable income. The One Big Beautiful Bill Act makes the deduction permanent. Here's how to understand and maximize it.

How the Basic 20% Deduction Works

If you have qualified business income, you may deduct the lesser of:
• 20% of your qualified business income (QBI), OR
• 20% of your taxable income minus net capital gains

QBI is your net income from a qualifying business — sales revenue minus business expenses — but it excludes:
• W-2 wages you pay yourself as an S corp employee
• Capital gains and losses
• Dividends and interest income
• Foreign income
• Reasonable compensation paid to S corp shareholders

The deduction reduces your taxable income but does NOT reduce your self-employment tax or adjusted gross income.

Income Limits and Phase-Outs

For 2025, the full 20% deduction is available to taxpayers with taxable income below:
• $197,300 (single filers)
• $394,600 (married filing jointly)

Above those thresholds, the deduction starts phasing out. For non-service businesses, additional limitations based on W-2 wages paid and the unadjusted basis of qualified property apply. For specified service trades or businesses (SSTBs), the deduction phases out completely once income reaches $247,300 (single) or $494,600 (MFJ).

What Is a Specified Service Trade or Business (SSTB)?

The law restricts the QBI deduction for high-income taxpayers in certain 'specified service' fields:
• Health (physicians, dentists, veterinarians)
• Law
• Accounting
• Actuarial science
• Performing arts
• Consulting
• Athletics
• Financial services
• Brokerage services
• Investment management

If you're in an SSTB and your taxable income is below the phase-out thresholds, you can still claim the full 20% deduction. The SSTB restriction only kicks in above the income limits. Some professions — engineering, architecture — are explicitly NOT SSTBs.

The W-2 Wage and Property Limitation

For high-income taxpayers above the phase-out thresholds who operate non-SSTB businesses, the QBI deduction is capped at the greater of:
• 50% of W-2 wages paid to employees, OR
• 25% of W-2 wages paid + 2.5% of the unadjusted basis of qualified depreciable property

This means capital-intensive businesses (manufacturing, real estate with employees) and businesses with significant payroll may still get the full deduction even at high income levels. But a solo consultant with no W-2 employees and no qualified property who exceeds the income limits may see their deduction significantly reduced.

The OBBBA Makes QBI Permanent

Before the OBBBA, the QBI deduction was scheduled to expire after 2025. The One Big Beautiful Bill Act makes the 20% QBI deduction permanent — there is no sunset date. This is significant planning news for small business owners: the deduction can now be factored into long-term business structure decisions without worrying about it disappearing.

The OBBBA also increases the QBI deduction for certain domestic production — including qualified production property — but the basic 20% pass-through deduction remains the most broadly applicable provision.

Frequently Asked Questions

Does the QBI deduction apply to rental income?

It can. Rental income from a rental real estate activity may qualify as QBI if you meet certain requirements — primarily that the rental constitutes a trade or business (not just passive investment). The IRS has issued a safe harbor: if you provide at least 250 hours of rental services per year and keep time records, the activity qualifies.

I'm an S corp owner. How do I calculate my QBI?

Your QBI from an S corporation is your share of the corporation's ordinary income or loss (from Schedule K-1, Box 1), adjusted to exclude items not counted as QBI (capital gains, Section 1231 gains, W-2 wages paid to you as an employee). Your reasonable compensation is NOT included in QBI.

Can I use the QBI deduction to offset my W-2 income from another employer?

No. The QBI deduction only applies to income from your own pass-through business — not W-2 wages from an employer. However, the deduction can reduce the taxable income that includes your W-2 income, since it's calculated against total taxable income.

Is there a QBI deduction for sole proprietors?

Yes — sole proprietors are the most common QBI deduction claimants. Your QBI is your net profit from Schedule C. The 20% deduction flows directly to Form 1040 and reduces your taxable income without requiring any entity or special election.

I'm a consultant over the income limit. Can I still get any QBI deduction?

If you're in an SSTB (consulting qualifies) and your taxable income exceeds the SSTB phase-out ceiling ($247,300 single / $494,600 MFJ for 2025), the deduction is eliminated for your consulting income. Some taxpayers restructure operations to separate non-SSTB activities, but the IRS watches for arrangements designed solely to manipulate this classification.