What is the QBI deduction (Section 199A) for small businesses?
The Qualified Business Income (QBI) deduction under Section 199A allows eligible sole proprietors, LLC owners, S-Corp shareholders, and partners to deduct up to 20% of qualified business income from their taxable income. Income limits apply above $191,950 (single) or $383,900 (married, 2024).
Detailed Explanation
The Qualified Business Income (QBI) deduction, created by the 2017 Tax Cuts and Jobs Act, was designed to give pass-through business owners a tax benefit similar to the corporate tax rate cut (from 35% to 21%). Pass-through entities (sole proprietorships, LLCs, S-Corps, partnerships) do not pay corporate tax — their income passes through to the owners' personal returns and is taxed at individual rates, which can be as high as 37%. The QBI deduction effectively reduces this.
How the deduction works
Eligible taxpayers can deduct up to 20% of their qualified business income (QBI) from each qualifying trade or business. The deduction is taken on Form 8995 or 8995-A and reduces taxable income (not AGI). It cannot exceed 20% of the taxpayer's taxable income minus net capital gains.
Example: A sole proprietor has $150,000 QBI. The QBI deduction is $30,000 (20%). If taxable income is $130,000, the cap is $26,000 (20% of taxable income).
Income thresholds for 2024
Below threshold amounts, the deduction is straightforward: - Single filers: below $191,950 taxable income (2024) - Married filing jointly: below $383,900 taxable income (2024)
Above these thresholds, phase-out rules apply, and the calculation becomes more complex.
Phase-out: W-2 wages and capital limitations
For taxpayers above the threshold, the QBI deduction is limited to the greater of: - 50% of W-2 wages paid by the business, OR - 25% of W-2 wages plus 2.5% of the unadjusted basis of qualified property
This means businesses with no W-2 employees (a sole proprietor with no employees) may see their QBI deduction significantly reduced or eliminated once their income exceeds the threshold. Hiring employees (and paying W-2 wages) or owning significant business property can preserve the deduction.
Specified Service Trades or Businesses (SSTBs)
Certain professional service businesses are Specified Service Trades or Businesses (SSTBs) and face additional limitations at higher income levels. SSTBs include: - Health (doctors, dentists, nurses) - Law (attorneys, paralegals) - Accounting (CPAs, bookkeepers) - Actuarial science - Performing arts - Consulting - Athletics - Financial services and investing - Brokerage services
For taxpayers below the threshold, SSTBs can still claim the full deduction. For those above the threshold, the SSTB deduction phases out completely once income exceeds the threshold by $100,000 (single) or $200,000 (married).
What qualifies as QBI
QBI is the net amount of qualified items of income, gain, deduction, and loss from a qualified trade or business. It includes: - Net profit from Schedule C - Partnership or S-Corp income on Schedule K-1 (business income only, not investment income) - REIT dividends (separate QBI rules apply)
QBI does not include: - Wages paid to yourself as an S-Corp employee (the W-2 wage portion) - Capital gains and losses - Interest income - Foreign income - Guaranteed payments from a partnership
W-2 wages and the 20% deduction
The W-2 wages limitation is a significant planning point. An S-Corp owner who pays themselves a W-2 salary (which is excluded from QBI) can still deduct 20% of the remaining S-Corp pass-through income. The salary reduces QBI but the W-2 wages limitation is based on the business's total W-2 payroll (including owner salary plus any employee wages).
Source: IRS Qualified Business Income Deduction
Real-World Examples
Sole proprietor below the income threshold
A freelance software developer (non-SSTB) has $140,000 in QBI and $180,000 in taxable income (2024). She is below the $191,950 single threshold. Her QBI deduction is 20% of $140,000 = $28,000. This deduction reduces her federal income tax by $28,000 x 22% (marginal rate) = $6,160.
Accountant above threshold — SSTB phase-out
A CPA (an SSTB) has $300,000 in taxable income filing single. The threshold is $191,950 and the phase-out completes at $291,950. His taxable income exceeds the full phase-out point, so his QBI deduction is fully phased out — he receives $0 QBI deduction despite being a pass-through business owner.
Common Mistakes to Avoid
- Assuming the QBI deduction applies equally to all business owners — SSTB limitations eliminate the deduction for many high-income professionals in law, accounting, consulting, and financial services.
- Confusing QBI with gross revenue — QBI is net business income after deductions, similar to Schedule C profit, not your top-line revenue.
- Not considering the W-2 wage limitation when above the income threshold — a sole proprietor with no employees may lose most of the deduction above the threshold without employing staff.
- Overlooking the QBI deduction entirely on self-prepared returns — it requires Form 8995 and is easy to miss when preparing taxes without software.
Frequently Asked Questions
Is the QBI deduction permanent?
No. Section 199A was created by the Tax Cuts and Jobs Act of 2017 and is currently scheduled to expire after December 31, 2025, unless Congress extends it. As of mid-2024, various proposals to extend the deduction are being discussed in Congress. Business owners should stay informed and plan for the possible expiration of this significant tax benefit.
Does an S-Corp salary reduce my QBI deduction?
Yes, to a point. Your S-Corp salary is excluded from QBI (wages are not qualified income). However, the W-2 wages you pay (including your own salary) can increase the W-2 wages limit, which may allow a larger deduction above the income threshold. Below the threshold, a higher salary simply reduces QBI and therefore the 20% deduction proportionally.
Can I take the QBI deduction if I have a loss?
A net QBI loss from one business reduces the QBI of other businesses in the same year. If the combined QBI across all businesses is negative, no QBI deduction is available for that year, and the loss carries forward as a negative QBI amount to reduce next year's deduction. The QBI deduction cannot itself create or increase a net operating loss.
Does the QBI deduction apply to rental income?
Rental income may qualify as QBI if your rental activity rises to the level of a trade or business. The IRS issued a safe harbor: if you provide 250 or more hours of rental services per year (documented in time logs) and meet certain other requirements, the rental activity is treated as a trade or business for QBI purposes. Triple-net leases generally do not qualify.
Practical Tips
- Track your taxable income relative to the QBI phase-out threshold throughout the year — if you are approaching $191,950 (single) or $383,900 (married), aggressive retirement contributions can bring you back below the threshold and preserve the full deduction.
- If you are above the threshold and have no W-2 employees, consider whether hiring even part-time employees (and creating W-2 wages) would generate enough QBI deduction savings to offset the cost of employment.
- SSTB business owners (accountants, consultants, lawyers) should model their total compensation to understand exactly when the deduction phases out and plan their income accordingly.
- File Form 8995-A (rather than the simplified Form 8995) if you have multiple businesses or are above the income threshold — the full form allows more nuanced calculation that may preserve a larger deduction.
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