According to the IRS Statistics of Income (SOI) Tax Stats, over 26.6 million individual income tax returns claimed the Section 199A Qualified Business Income (QBI) deduction in 2021 alone, totaling a staggering $260 billion in tax relief for small business owners. For nearly a decade, this "20% discount" on federal taxes has been the bedrock of small business tax planning. But here is the hard truth most business owners aren't prepared for: under the current provisions of the Tax Cuts and Jobs Act (TCJA) of 2017, this deduction is scheduled to vanish completely on December 31, 2025. Unless Congress acts, your effective tax rate is about to jump significantly. At Zenith Financial Advisors, we aren't waiting for a political miracle. We are helping our clients pivot now to ensure that when the 2026 tax season arrives, they aren't left holding a five-figure bill that could have been avoided with proactive structural changes.
Key Takeaways
- The Section 199A deduction expires Dec 31, 2025, potentially increasing your tax bill by 20% of your qualified business income.
- Converting from a Sole Proprietorship to an S-Corp can mitigate these losses by reducing Self-Employment tax liability.
- High-income earners can leverage Defined Benefit plans to shield up to $275,000 in income from the 2026 tax hike.
- Cross-border business owners must navigate the "Double Whammy" of US sunset provisions and Canadian corporate tax integration.
1. The 2026 Tax Cliff: Understanding the End of Section 199A
The Qualified Business Income deduction was designed to provide parity between C-Corporations (which saw their rates slashed to 21%) and pass-through entities like LLCs, S-Corps, and partnerships. However, unlike the permanent C-Corp rate, Section 199A was born with an expiration date. Per the IRS guidelines in Publication 535, the QBI deduction allows eligible self-employed individuals and small business owners to deduct up to 20% of their qualified business income from their federal income tax.
As we approach 2026, the absence of this deduction creates a massive tax gap. For a business owner netting $150,000 in qualified income, the loss of a $30,000 deduction at a 24% marginal rate represents a direct $7,200 increase in federal taxes. When combined with the scheduled return of the 39.6% top individual bracket, the impact is even more severe for high earners. The IRS reports that the average QBI deduction for taxpayers with total income between $200,000 and $500,000 was approximately $18,400 in 2021. Losing this benefit overnight requires a fundamental shift in how you categorize and distribute your business earnings.
Source: IRS.gov (Publication 1304)
2. The S-Corp Pivot: Swapping QBI for Self-Employment Savings
When the QBI deduction disappears, the primary advantage of being a "simple" LLC or Sole Proprietorship vanishes with it. In 2026, the most effective tool for reclaiming that lost 20% will be the S-Corporation election via Form 2553. Why? Because while you lose the QBI deduction, you can still drastically reduce your exposure to FICA (Social Security and Medicare) taxes.
Under a Sole Proprietorship, 100% of your profit is subject to the 15.3% self-employment tax (up to the Social Security wage base, which is $168,600 for 2024 per the Social Security Administration). In an S-Corp, only the "reasonable compensation" you pay yourself as W-2 wages is subject to these taxes. The remaining profit is distributed as a shareholder dividend, which is exempt from FICA. According to the Treasury Inspector General for Tax Administration (TIGTA), S-Corp owners save billions annually by utilizing this strategy, though the IRS has increased scrutiny on what constitutes "reasonable" pay. Per Revenue Ruling 74-44, the IRS has the authority to recharacterize distributions as wages if the owner's salary is deemed too low.
| Tax Strategy (at $200k Net) | Sole Proprietor (Post-2025) | S-Corp Pivot (Post-2025) |
|---|---|---|
| QBI Deduction (Section 199A) | $0 (Expired) | $0 (Expired) | Self-Employment/FICA Tax | ~$24,000 | ~$11,500 (based on $75k salary) | Estimated Annual Savings | $0 | $12,500 |
Source: SSA.gov
3. Shielding Income with Advanced Retirement Structures
If you can no longer deduct 20% of your income off the top, the next best strategy is to hide that income in tax-deferred vehicles. For the high-earning consultant or small business owner, the standard SEP IRA or Solo 401(k) may not be enough to offset the 2026 tax hike. Instead, we are looking toward Defined Benefit (DB) Plans and Cash Balance Plans.
According to Section 415(b)(1)(A) of the Internal Revenue Code, the maximum annual benefit for a defined benefit plan in 2024 is $275,000. For an owner in their 50s, this can translate into a tax deduction of $100,000 to $200,000 per year. This is a "above the line" deduction that reduces your Adjusted Gross Income (AGI). When the TCJA rates sunset and we likely return to a 39.6% top tier, every dollar contributed to a DB plan saves nearly 40 cents in federal taxes. This effectively replaces the QBI deduction with a much larger, more robust tax shield. We recommend clients begin the actuarial setup for these plans by October of the year preceding implementation to ensure compliance with ERISA and IRS guidelines.
PRO TIP: The "2025 Pre-Payment" Strategy
Because 2025 is the final year for the 20% QBI deduction, you should aim to maximize your business income in 2025 and defer deductible expenses into 2026. In 2025, every dollar of income is only taxed on 80 cents (thanks to QBI). In 2026, every dollar of expense is more valuable because it offsets a higher tax rate without the QBI haircut. Check your accounting methods (Cash vs. Accrual) to see if you can legally pull revenue forward into December 2025.
