The Qualified Business Income (QBI) deduction is one of the most significant tax benefits available to self-employed professionals and small business owners. Enacted under the Tax Cuts and Jobs Act (TCJA), this deduction allows eligible taxpayers to potentially deduct up to 20% of their qualified business income. But understanding who qualifies and how the deduction is calculated can be complex. In this guide, we’ll break down what the QBI deduction is, who’s eligible, and how to maximize this valuable tax break.
What Is the QBI Deduction?
The QBI deduction, also known as the Section 199A deduction, allows owners of pass-through entities—like sole proprietorships, partnerships, S corporations, and some LLCs—to deduct up to 20% of their qualified business income on their personal tax returns.
The deduction:
- Reduces taxable income (not self-employment tax)
- Applies whether or not you itemize deductions
- Is available through 2025 unless extended by Congress
Who Qualifies for the QBI Deduction?
You may qualify for the QBI deduction if you:
- Operate as a sole proprietor, partner, or S corporation shareholder
- Have domestic business income (not from capital gains, dividends, or interest)
- Are under the income threshold for your filing status
For 2025, the income thresholds are:
- $232,100 for single filers
- $464,200 for married couples filing jointly
If you’re below the threshold, you generally get the full 20% deduction regardless of your industry.
Specified Service Trades or Businesses (SSTBs)
If your business is considered a Specified Service Trade or Business (SSTB), your eligibility phases out once your income exceeds the thresholds above. SSTBs include:
- Health
- Law
- Accounting
- Consulting
- Financial services
- Performing arts
For example, a self-employed consultant earning $300,000 may see their deduction limited or eliminated due to SSTB rules.
How Is the Deduction Calculated?
If you’re under the threshold: The deduction is simply 20% of your QBI.
If you’re above the threshold: The deduction may be limited by:
- The type of business (SSTB or not)
- W-2 wages paid by the business
- Unadjusted basis of qualified property (UBIA)
The wage and property limitation formula is the greater of:
- 50% of W-2 wages paid by the business
- 25% of W-2 wages + 2.5% of the UBIA of qualified property
Example 1: Below Threshold
If you’re a freelance designer with $100,000 in net income and no employees:
- QBI = $100,000
- Deduction = $20,000
- Taxable income = Reduced by $20,000
Example 2: Above Threshold, SSTB
If you’re a solo consultant earning $300,000:
- No employees
- SSTB designation applies
- Deduction phases out completely due to income level
How to Maximize the QBI Deduction
- Keep Income Below the Threshold Use retirement contributions, HSA deductions, or income timing to stay under the limit.
- Increase W-2 Wages If you have employees or an S Corp, paying yourself and your team a reasonable salary can help preserve the deduction.
- Invest in Qualified Property Owning depreciable assets like equipment or furniture helps support the UBIA test.
- Group Entities or Restructure Consider creating multiple entities or restructuring to separate SSTB and non-SSTB income (with legal and CPA guidance).
- Elect S Corporation Status An S Corp structure allows you to pay yourself wages and receive distributions, which may affect your deduction calculation positively.
Special Considerations for Real Estate
Real estate investors and professionals may also qualify for the QBI deduction under certain circumstances. To do so, the rental activity must rise to the level of a trade or business. IRS guidelines suggest:
- Regular, continuous, and substantial activity
- 250+ hours of services per year
- Proper recordkeeping and logs
Hiltzik CPA provides guidance on how rental income can qualify for QBI based on your facts and circumstances.
How QBI Interacts with Other Deductions
Note that the QBI deduction doesn’t affect your:
- Self-employment tax
- Net investment income tax
- Eligibility for itemized deductions
But it does lower your overall taxable income and may influence your marginal tax rate and eligibility for other credits.
Work With a CPA for Optimal Results
The QBI deduction is powerful, but also nuanced. A proactive CPA can help you:
- Model the impact of your income level
- Identify opportunities to optimize wages and assets
- Stay compliant with evolving IRS rules
What the deduction is worth depends on your income, your entity, and the wage and property limits.
