QBI Deduction Explained: How to Claim the 20% Pass-Through Deduction in 2026
Quick Answer
The QBI (Qualified Business Income) deduction under Section 199A allows eligible self-employed, LLC, and S-Corp owners to deduct up to 20% of qualified business income from taxable income. On $100,000 of business income, this saves a 24% bracket taxpayer $4,800 in federal income tax. The deduction phases out for service businesses (attorneys, consultants, doctors) above $197,300 (single) or $394,600 (married) AGI in 2026.
What Is QBI?
QBI is the net amount of qualified items of income, gain, deduction, and loss from any qualified trade or business. Simply put: it's your net business profit from qualifying sources.
QBI deduction = 20% × Qualified Business Income
On $100,000 net business income, your deduction is $20,000. If you're in the 22% tax bracket, this saves you $4,400.
This is one of the most valuable tax provisions available to small business owners.
Who Qualifies
The QBI deduction applies to income from:
- Sole proprietorships (Schedule C)
- Single-member LLCs (taxed as disregarded entities)
- Multi-member LLCs (taxed as partnerships)
- S-Corporations (distributions and salary qualify differently)
- Partnerships
Who does NOT qualify:
- C-Corporations (pay corporate tax instead)
- W-2 employees (employment wages are not QBI)
- Certain investment income (capital gains, dividends, interest)
- Non-US source income
The Two Limitations That Reduce Your Deduction
Limitation 1: The W-2 Wages / Capital Limitation
For high-income taxpayers, the QBI deduction is limited to the greater of:
- 50% of W-2 wages paid by the business, OR
- 25% of W-2 wages + 2.5% of qualified property (UBIA)
This limitation kicks in when your taxable income exceeds:
- Single/MFS: $197,300 (2026)
- Married filing jointly: $394,600 (2026)
Why this matters: Many sole proprietors and S-Corp owners with high income pay little or no W-2 wages (to themselves or employees), limiting their deduction.
Example:
- Net QBI: $300,000 from an S-Corp
- W-2 wages paid (only your salary of $70,000): $70,000
- 50% of W-2 wages: $35,000
- 20% of QBI: $60,000
- Limitation applies: Deduction limited to $35,000
Without the limitation, you'd deduct $60,000. With the limitation, only $35,000—losing $5,750 in tax savings (at 23% effective rate).
Solution for S-Corp owners: Paying a higher W-2 salary increases the W-2 wage base, potentially allowing a larger QBI deduction. There's a sweet spot between minimizing payroll tax (lower salary) and maximizing QBI deduction (higher salary that increases W-2 wage base).
Limitation 2: Specified Service Trade or Business (SSTB) Phase-Out
Certain "specified service" businesses face phase-out of the deduction once income exceeds the thresholds.
SSTBs include:
- Health (physicians, dentists, therapists, veterinarians)
- Law
- Accounting
- Actuarial science
- Performing arts
- Consulting
- Athletics
- Financial services (financial advisors, brokers)
- Brokerage services
- Any business "where the principal asset is the reputation or skill of its employees/owners"
SSTBs do NOT include:
- Engineering
- Architecture
- Real estate (typically)
- Insurance (typically)
- Retail businesses
- Manufacturing
- Restaurants
Phase-Out for SSTB Owners
| Taxable Income (Single) | SSTB Deduction |
|---|---|
| Under $157,300 | Full 20% deduction |
| $157,300–$197,300 | Phase-out (partial deduction) |
| Over $197,300 | $0 deduction |
| Taxable Income (MFJ) | SSTB Deduction |
|---|---|
| Under $314,600 | Full 20% deduction |
| $314,600–$394,600 | Phase-out (partial deduction) |
| Over $394,600 | $0 deduction |
Married physician example:
- Net practice income: $350,000
- Taxable income (after deductions): $320,000
- QBI deduction calculation: Partially phased out
- Effective QBI deduction: ~$12,000 (vs. $70,000 if no phase-out)
The SSTB phase-out significantly reduces QBI value for high-earning professionals. This is why tax planning for physicians, attorneys, and consultants requires careful income management.
Strategies to Maximize QBI Deduction
Strategy 1: Income Bunching / Deferral
Keep taxable income below the SSTB phase-out thresholds by deferring income to the next year or accelerating deductions.
Techniques:
- Max out retirement accounts (SEP-IRA, Solo 401k, SIMPLE IRA) before year-end
- Prepay business expenses in December (supplies, subscriptions, prepaid services)
- Defer end-of-year invoices to January if possible
- Contribute to HSA (deductible above-line)
- Harvest capital losses to reduce taxable income
Strategy 2: Increase W-2 Wages (S-Corp Owners)
If you're above the income threshold and limited by the 50% W-2 wage limitation, increasing your S-Corp salary can increase your QBI deduction.
Example:
- Net QBI: $400,000
- Current salary: $80,000 → W-2 limitation: $40,000 → QBI deduction: $40,000
- Increased salary: $120,000 → W-2 limitation: $60,000 → QBI deduction: $60,000
- Additional tax savings from higher W-2 limit: $20,000 × 22% = $4,400
- Additional payroll tax on $40,000 higher salary: $40,000 × 15.3% = $6,120
- Net result: -$1,720 — NOT worth it in this case
The calculation depends on your specific numbers. Use scorp-vs-llc-tax calculator to model the optimal salary level for both payroll tax minimization and QBI deduction maximization.
Strategy 3: Separate SSTB from Non-SSTB Income
If you have both SSTB (consulting) and non-SSTB (real estate) income, keep them in separate entities. Non-SSTB income qualifies for QBI deduction even when SSTB income is phased out.
Example:
- $400,000 consulting income (SSTB—no deduction at this income)
- $100,000 rental property income (not SSTB—qualifies for deduction)
- QBI deduction on rental income: $20,000 (20%)
- Tax savings: $20,000 × 32% = $6,400
Rental real estate regularly qualifies for QBI deduction if properly structured (IRS Revenue Procedure 2019-38 safe harbor requires 250+ hours of rental services per year).
Common Mistakes (Do This, Not That)
❌ Mistake 1: Not claiming the QBI deduction because it seems complicated Many self-employed individuals skip the QBI deduction because they don't understand it, costing them thousands. The deduction is automatic for low-income business owners who file Schedule C.
✅ Do this: If you have self-employment income below the phase-out thresholds, your tax software or CPA should automatically calculate this. Verify it appears on Form 8995 of your tax return. For higher incomes, use business-tax-strategy tools to optimize.
❌ Mistake 2: Ignoring QBI in retirement contribution decisions Retirement contributions reduce QBI (since they reduce net business income). If you're in the phase-out range, a large retirement contribution might actually increase your total tax by reducing QBI and increasing your effective rate.
✅ Do this: Model retirement contributions with their effect on QBI deduction. Sometimes a slightly smaller retirement contribution produces better total after-tax results when QBI is affected.
❌ Mistake 3: Grouping SSTB and non-SSTB activities together Mixing a consulting business (SSTB) with a rental business in the same entity may taint the rental income with SSTB characteristics if the service component exceeds 10% of gross receipts.
✅ Do this: Keep SSTB businesses separate from non-SSTB activities (especially real estate). Separate LLCs or entities preserve non-SSTB income's QBI eligibility.
Step-by-Step QBI Optimization Checklist
- Identify all income sources: which are QBI-eligible vs. excluded?
- Determine if any income comes from SSTB activities
- Calculate estimated taxable income before QBI deduction
- Check if you're below, in, or above the phase-out thresholds
- If SSTB and above threshold: model income reduction strategies
- If above W-2 wage limitation: calculate whether higher salary improves QBI
- Max retirement contributions to reduce QBI and taxable income
- Verify QBI deduction appears on Form 8995 or 8995-A in your return
- Consult a CPA if your income is in the phase-out range—the planning complexity is worth professional guidance
Frequently Asked Questions
Q: Is the QBI deduction permanent? A: As of 2026, the QBI deduction is set to expire after 2025 under the TCJA sunset provisions, UNLESS Congress extends it. As of early 2026, tax legislation has extended it through 2027. Consult a tax advisor for the most current status.
Q: Does my S-Corp salary count as QBI? A: No. W-2 wages paid to an S-Corp owner-employee are not QBI—they're wages, which are excluded. Only the remaining S-Corp income (distributions passing through on the K-1) qualifies as QBI.
Q: Can I use QBI losses from one business against income from another? A: QBI is calculated per entity. Net losses from one QBI activity must be carried forward; they don't immediately offset QBI income from other activities in the same year.
Q: Do rental properties qualify for QBI? A: Yes, if they meet the rental real estate safe harbor (250+ hours/year of services per property, detailed records). Triple-net leases and passive rentals with minimal services may not qualify.
Q: How does QBI interact with the SALT cap? A: They're calculated independently. QBI reduces federal taxable income on Form 1040. State and local tax deductions are still subject to the $10,000 SALT cap on Schedule A. Both can apply simultaneously.
Related Tools
- Business Tax Strategy Guide — Optimize all business tax deductions including QBI
- Self-Employment Tax Calculator — Model your complete self-employment tax picture
- S-Corp vs. LLC Calculator — Optimize salary vs. distribution for QBI and payroll tax purposes