For eight years, owners of pass-through businesses — sole proprietors, S-corp shareholders, partners, and LLC members — operated under a deduction set to expire. The Section 199A Qualified Business Income deduction allowed up to 20% of qualified business income to be removed from federal taxable income. But the sunset provision created uncertainty that made long-term planning difficult.
That uncertainty is gone. The One Big Beautiful Bill Act, signed in 2025, permanently extended Section 199A. The real question now is how to maximize it.
“The permanent extension removes the planning horizon problem. Business owners can now structure for the long term — not just the next tax season.”
Section 199A allows eligible taxpayers to deduct up to 20% of their qualified business income from taxable income — reducing it directly, delivering value even for those who take the standard deduction.
QBI is calculated at the individual return level — not the entity level.
QBI Deduction in Practice
1Qualified Business Income: $300,000
220% QBI Deduction: $60,000 reduction in taxable income
3Tax saved at 37% marginal rate: $22,200 per year
410-year value: $222,000 in preserved capital
The deduction is available to individuals, trusts, and estates owning interests in pass-through businesses. C-Corporations are excluded. W-2 employees receive no benefit regardless of income.
The most significant complication involves Specified Service Trades or Businesses (SSTBs) — health, law, accounting, consulting, and financial services. For SSTB owners, the deduction phases out as income rises and disappears entirely above the upper limit.
| Filing Status | Full Deduction | Phase-Out Range | No Deduction (SSTB) |
|---|---|---|---|
| Married Filing Jointly | Below $383,900 | $383,900–$483,900 | Above $483,900 |
| Single / Head of Household | Below $191,950 | $191,950–$241,950 | Above $241,950 |
Three Key OBBBA Changes for QBI
1 Permanent Extension: The deduction no longer sunsets. Business owners can structure for a permanent 20% deduction.
2 Inflation-Adjusted Thresholds: 2026 phase-out thresholds are adjusted upward, giving more taxpayers access to the full deduction.
3 Interaction with Other Provisions: Modified bonus depreciation and retirement limits interact with QBI planning — ZSS analyzes these holistically.
Business owners near the phase-out threshold benefit most from proactive planning — maximizing SEP-IRA, Solo 401(k), or defined benefit plan contributions and timing capital gains recognition to stay within the full deduction range.
S-corp shareholders must receive reasonable W-2 compensation — it reduces self-employment tax but does not qualify as QBI. ZSS evaluates the salary-to-distribution balance annually to optimize both outcomes.
“Strategic retirement contributions, entity restructuring, and income timing can mean the difference between a partial deduction and the full 20%.”
ZSS works with pass-through business owners across California to structure, claim, and maximize the Section 199A deduction.
ZSS provides comprehensive tax compliance, strategic tax consulting, and outsourced accounting services to businesses, investors, and high net worth individuals.
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