Tax law changes often arrive with complexity, fine print, and uncertainty. One provision that continues to have a meaningful impact on business owners is the qualified business income (QBI) deduction. Originally introduced as part of the Tax Cuts and Jobs Act, this deduction went into effect in 2018 and was initially scheduled to expire after 2025. With legislation enacted on July 4, 2025, the QBI deduction was made permanent, providing long-term planning opportunities for eligible individuals.
For business owners, freelancers, and investors with pass-through income, the QBI deduction can be a powerful tax-saving tool. However, it comes with detailed rules, income thresholds, and limitations that require careful analysis to apply correctly.
What Is the Qualified Business Income (QBI) Deduction?
The qualified business income deduction allows eligible taxpayers to deduct up to 20% of qualified business income from certain types of businesses. This deduction applies to income earned through pass-through entities, where profits flow through to the owner’s individual tax return rather than being taxed at the business level.
Eligible income sources include:
- Sole proprietorships
- Single-member LLCs treated as sole proprietorships
- Partnerships
- LLCs treated as partnerships
- S corporations
Pass-through businesses report income on the owners’ individual tax returns, and when allowed, the QBI deduction is claimed at the owner level. For many taxpayers, this deduction can significantly reduce taxable income.
What Counts as Qualified Business Income?
Qualified business income generally includes net income, gains, deductions, and losses from an eligible trade or business. However, QBI is not simply gross revenue. It is reduced by certain deductions tied to self-employment and business operations.
According to IRS rules, QBI is reduced by:
- The allocable deduction for contributions to a self-employed retirement plan
- The allocable deduction for 50% of self-employment tax
- The allocable deduction for self-employed health insurance premiums
It is also important to understand what does not count as qualified business income. Wages earned as an employee do not qualify. Guaranteed payments to partners or LLC members for services—often referred to as partner salaries—are excluded. Likewise, wages paid to shareholder-employees of S corporations do not qualify as QBI, nor do wages paid by C corporations.
How the QBI Deduction Works on Your Tax Return
One point that often surprises taxpayers is where the qualified business income deduction appears on the tax return. The deduction does not reduce adjusted gross income (AGI). Instead, it is applied after AGI is calculated, similar to an itemized deduction.
Additionally, the QBI deduction does not reduce:
- Net earnings from self-employment for self-employment tax purposes
- Net investment income for purposes of the 3.8% net investment income tax
While this means the deduction does not impact all tax calculations, it can still result in meaningful federal income tax savings.
Income Limits and Deduction Limitations
The qualified business income deduction becomes more complex at higher income levels. For 2025, unfavorable limitations begin to phase in when taxable income—calculated before the QBI deduction—exceeds:
- $201,750 for single filers
- $403,500 for married filing jointly
These thresholds are adjusted periodically for inflation.
Once income exceeds these levels, the QBI deduction may be limited based on wages paid by the business and the value of certain business assets.
Understanding the W-2 Wage and Property Limitations
For taxpayers subject to the phase-in rules, the QBI deduction is limited to the greater of:
- 50% of W-2 wages paid to employees that are properly allocable to QBI, or
- 25% of W-2 wages, plus 2.5% of the unadjusted basis immediately after acquisition (UBIA) of qualified property
The UBIA component is designed to benefit capital-intensive businesses such as manufacturers, hotels, or real estate operations. Qualified property generally includes depreciable tangible property—such as buildings or equipment—that is owned by the business and used to produce QBI. UBIA is typically equal to the original cost of the property when it was placed into service.
These limitations are one of the most technical aspects of the QBI deduction and often require professional analysis to apply correctly.
What Is a Specified Service Trade or Business (SSTB)?
Another critical component of the qualified business income deduction is the concept of a specified service trade or business (SSTB). In general, SSTBs include businesses where the primary activity involves the performance of services in fields such as:
- Health
- Law
- Accounting and actuarial science (excluding architecture and engineering)
- Consulting
- Financial, brokerage, investing, and investment management services
- Trading or dealing in securities, partnership interests, or commodities
- Athletics and performing arts
If your business falls into one of these categories, special rules apply that can significantly reduce or eliminate the QBI deduction at higher income levels.
The “Reputation or Skill” Concern Explained
When the QBI rules were first introduced, there was concern that the SSTB definition could be interpreted too broadly—potentially capturing businesses such as restaurants with well-known chefs. IRS regulations addressed this concern by narrowing the definition.
A business is considered an SSTB under the “reputation or skill” category only if it meets one or more of the following conditions:
- Income is earned from endorsing products or services
- Income is earned from licensing or use of an individual’s name, likeness, image, or similar identifying features
- Income is earned from appearances at events or on media platforms
This clarification reduced uncertainty for many business owners.
How SSTB Rules Affect the QBI Deduction
For SSTBs, the qualified business income deduction begins to phase out once taxable income exceeds the applicable threshold. Once income reaches the full phase-out level, no QBI deduction is allowed for income derived from an SSTB.
This makes income planning especially important for owners of service-based businesses. Strategic decisions regarding compensation, retirement contributions, and business structure can influence eligibility.
Aggregating Businesses to Maximize the Deduction
In certain situations, taxpayers may be allowed to aggregate multiple businesses when calculating the QBI deduction. Aggregation can sometimes produce a larger deduction than treating businesses separately—particularly when one business generates substantial income but few wages, and another generates wages but little income.
However, strict IRS rules govern aggregation. Businesses must meet common ownership, operational, and functional integration tests. Importantly, an SSTB cannot be aggregated with any other business, including another SSTB.
Because aggregation decisions can have lasting tax consequences, professional guidance is essential.
Making the Most of the QBI Deduction
The qualified business income deduction rules are outlined in extensive IRS regulations that are highly technical. Small changes in income, wages, or business structure can significantly affect the outcome.
A proactive approach is key. Reviewing your situation regularly allows opportunities to adjust strategies before year-end, rather than reacting after the fact.
Your CPA can help evaluate eligibility, calculate the deduction accurately, and coordinate the QBI deduction with broader tax planning goals.
Final Thoughts
The qualified business income deduction remains one of the most valuable tax benefits available to owners of pass-through businesses. While the rules are complex, the potential savings can be substantial when the deduction is applied correctly.
For business owners seeking clarity and confidence in their tax planning, professional guidance makes a meaningful difference. Burton McCumber & Longoria helps clients navigate the QBI deduction and broader tax strategies with care and precision. To understand how the qualified business income deduction applies to your situation and how to maximize its benefits, contact Burton McCumber & Longoria today.