Key Takeaway
Business owners with $100,000+ in net profit can save a lot in tax annually by combining an S-Corp election (saving 15.3% self-employment tax on distributions), the permanent 20% QBI deduction under Section 199A, and tax-deferred retirement contributions up to $72,000–$300,000+ per year. These strategies work best when coordinated—not implemented in isolation.
The S-Corp Election: How It Cuts Self-Employment Tax
An S-Corp election lets business owners split income between salary and distributions, eliminating the 15.3% self-employment tax on the distribution portion. For an owner with $150,000 in net profit, this can potentially save $8,000–$15,000 per year.
Here’s how it works with real numbers. Say your LLC generates $150,000 in net profit. As a sole proprietor, you pay self-employment tax (Social Security + Medicare) on 92.35% of that—roughly $21,300 in SE tax alone. Now elect S-Corp status by filing IRS Form 2553. You pay yourself a reasonable salary of $80,000 and take the remaining $70,000 as a distribution.
The result: you only pay payroll tax on the $80,000 salary (about $12,240). The $70,000 distribution is free from self-employment tax entirely. That’s roughly $9,060 in annual savings—every year.
The IRS requires your salary to be “reasonable”—meaning it reflects what someone in your role would earn in the open market. The Watson v. United States case established legal precedent here. Most tax practitioners recommend the S-Corp election once net profit exceeds $60,000–$100,000, which is where the tax savings outweigh the added costs of payroll processing and an S-Corp tax return (typically $2,000–$5,000 per year in additional accounting fees). Take a look at our other article explaining reasonable compensation here.
Filing deadline for 2027: Form 2553 must be filed by March 15, 2027 (the 15th falls on a Sunday) for calendar-year businesses. Miss that date and the election won’t take effect until January 1, 2028. Late election relief is available under Rev. Proc. 2013-30 if you file within 3 years and 75 days of the intended effective date.
The QBI Deduction: Section 199A’s Permanent 20% Break
The Qualified Business Income deduction under IRC Section 199A allows eligible (emphasis on eligible) business owners to deduct 20% of their qualified business income from taxable income. The One Big Beautiful Bill Act, signed July 4, 2025, made this deduction permanent.
On $200,000 of qualified business income, the QBI deduction saves you $40,000 in deductions—worth roughly $8,800–$14,800 in actual tax savings depending on your bracket. For the 37% bracket, that’s $14,800 back in your pocket from a single line item.
2026 income thresholds (updated under the One Big Beautiful Bill Act):
| Filing Status | Full Deduction Below | Phase-Out Complete At |
|---|---|---|
| Single | $203,000 | ~$278,000 |
| Married Filing Jointly | $406,000 | ~$556,000 |
The phase-in range expanded by 50% under the new law—from $100,000 to $150,000 for joint filers. This means more business owners at higher income levels can now claim a partial QBI deduction. For specified service trades or businesses (SSTBs)—which includes law, accounting, consulting, and medicine—the deduction phases out entirely above the upper threshold.
Key planning interaction: If you run an S-Corp, the W-2 wages you pay yourself count toward the “W-2 wage and qualified property” limitation that kicks in above the thresholds. A higher salary can actually increase your allowable QBI deduction—which is why these strategies need to be coordinated, not implemented separately. For detailed guidance, see IRS Publication 560.
Retirement Strategies That Double as Tax Shelters
Tax-advantaged retirement plans allow business owners to defer $72,000 to $300,000+ annually in pre-tax income, reducing current-year tax liability dollar for dollar. These aren’t just retirement savings—they’re the most powerful legal tax reduction tools available.
Solo 401(k): Best for self-employed owners and single-member LLCs. For 2026, you can contribute up to $72,000 total (under age 50), split between an employee deferral of $24,500 and an employer profit-sharing contribution of up to 25% of compensation. If you’re age 60–63, the enhanced catch-up provision lets you contribute up to $83,250 total. According to the IRS (Notice 2025-67), the compensation limit used to calculate contributions is $360,000 for 2026. For comprehensive guidance, see IRS Publication 560 (Retirement Plans for Self-Employed Individuals).
SEP IRA: Simpler to set up than a 401(k), but limited to employer contributions only—up to 25% of compensation, maxing at $72,000 for 2026. A SEP IRA can be established and funded as late as your tax filing deadline (including extensions), making it a last-minute option.
Cash Balance Plan: For high earners making $200,000+, this defined benefit plan can shelter $100,000 to $300,000+ per year in tax-deductible contributions, depending on age and income. The IRS maximum annual benefit under Section 415(b) is $290,000 for 2026, with a lifetime lump-sum equivalent of approximately $3.7 million. Layering a cash balance plan on top of a Solo 401(k) is one of the most aggressive—and fully legal—tax deferral strategies available.
Retirement Plan Contribution Limits: 2026 Comparison
The table below compares 2026 contribution limits, setup complexity, and ideal use cases across the four main retirement plan options for business owners.
| Plan Type | 2026 Max Contribution | Best For | Setup Complexity | Deadline |
|---|---|---|---|---|
| Solo 401(k) | $72,000–$83,250 | Self-employed, single-member LLCs | Moderate | Dec 31 of tax year |
| SEP IRA | $72,000 (25% of comp) | Simple setup, last-minute planning | Low | Tax filing deadline + extensions |
| Cash Balance Plan | $100K–$300K+ | High earners ($200K+ income) | High (requires actuary) | Dec 31 of tax year |
| Traditional/Roth IRA | $7,500 ($8,600 if 50+) | Supplemental savings | Low | April 15 of following year |
Source: IRS Notice 2025-67 and IRS Publication 560 (2025). Limits are subject to annual cost-of-living adjustments.
Under-the-Radar Deductions Most Owners Miss
Beyond S-Corp elections and retirement plans, several lesser-known deductions can reduce taxable income by $30,000–$50,000+ annually when stacked together.
Accountable Plans: An accountable reimbursement plan lets S-Corp owners reimburse themselves tax-free for legitimate business expenses—meals, travel, education, cell phone, and home office costs. The reimbursement is deductible to the S-Corp and not taxable income to you. The IRS requires documentation and a business connection for each expense under IRC Section 62(c).
Section 179 and Vehicle Deductions: The Section 179 deduction allows you to expense up to $1,250,000 in qualifying equipment and vehicle purchases in 2026 (the One Big Beautiful Bill Act increased this from $1,160,000). Vehicles over 6,000 lbs gross vehicle weight rating (GVWR)—like many SUVs and trucks—qualify for accelerated depreciation, potentially letting you deduct $25,000–$30,000+ in the first year.
Health Insurance Deduction: Self-employed business owners can deduct 100% of health insurance premiums for themselves, their spouse, and dependents. This is an above-the-line deduction that reduces your adjusted gross income (AGI), which can also lower the threshold for other deductions and credits.
Home Office Deduction: The simplified method allows $5 per square foot, up to 300 square feet ($1,500 maximum). The regular method deducts a percentage of actual home expenses—mortgage interest, property taxes, insurance, utilities, and depreciation—based on the office’s share of your home’s total square footage. The regular method can yield significantly higher deductions for owners with larger office spaces.
How These Strategies Work Together
Tax strategies deliver the biggest savings when coordinated as a system—implementing them in isolation can create conflicts that reduce or eliminate benefits. Your S-Corp salary affects your QBI deduction. Your retirement contributions reduce taxable income, which may move you below phase-out thresholds. Your accountable plan reimbursements reduce S-Corp income, which changes your optimal salary split.
At Proseer, we’ve seen clients lose money by implementing strategies piecemeal. One business owner elected S-Corp status on advice from their payroll provider, but set their salary too low without considering how it would cap their QBI deduction. They saved $6,000 in self-employment tax but lost $11,000 in QBI deductions—a net loss of $5,000. A coordinated approach would have identified the optimal salary-to-distribution ratio that maximized total savings across both strategies.
The complete picture requires analyzing your business structure, compensation, investment income, personal deductions, and how each strategy’s thresholds interact. This is exactly the kind of proactive planning that separates a compliance-focused accountant from a strategic tax advisor. For help coordinating these strategies, visit contact us.
Frequently Asked Questions
When should I elect S-Corp status for my LLC?
Most tax advisors recommend electing S-Corp status once your net business profit consistently exceeds $60,000–$100,000 per year. Below that range, the added costs of payroll processing and a separate S-Corp tax return ($2,000–$5,000 annually) often outweigh the self-employment tax savings. The 2026 filing deadline for Form 2553 is March 16, 2026 for calendar-year businesses.
Is the QBI deduction still available in 2026?
Yes. The One Big Beautiful Bill Act, signed into law on July 4, 2025, made the Section 199A QBI deduction permanent. It was originally set to expire after December 31, 2025. For 2026, the full deduction applies to single filers with taxable income below $203,000 and joint filers below $406,000. The phase-out range was also expanded by 50%.
How much can I contribute to a Solo 401(k) in 2026?
For 2026, the total Solo 401(k) contribution limit is $72,000 (under age 50), $80,000 (ages 50–59 or 64+), or $83,250 (ages 60–63 under the enhanced catch-up). This includes both the $24,500 employee deferral and employer profit-sharing contributions of up to 25% of compensation.
Can I combine an S-Corp election with a retirement plan?
Absolutely. S-Corp owners can maintain a Solo 401(k), SEP IRA, or cash balance plan. Your W-2 salary from the S-Corp determines your employee deferral amount, while profit-sharing contributions are based on compensation. Layering an S-Corp with a 401(k) and cash balance plan is one of the most effective legal tax deferral strategies available—potentially sheltering $300,000+ per year for high earners.
What happens if I miss the Form 2553 deadline?
If you miss the March 16, 2026 deadline, your S-Corp election typically won’t take effect until January 1, 2027. However, the IRS offers late election relief under Rev. Proc. 2013-30 if you file within 3 years and 75 days of the intended effective date and can provide reasonable cause. Write “FILED PURSUANT TO REV. PROC. 2013-30” at the top of Form 2553.
Take Action on Your Tax Strategy
The strategies in this guide—S-Corp elections, the QBI deduction, retirement plan contributions, and targeted deductions—can save business owners taxes. But the savings only materialize when these strategies are coordinated around your specific financial situation.
At Proseer, headquartered in Fort Lauderdale, we help business owners build tax strategies that work as a system, not a checklist. If you’re earning six figures or more and aren’t sure whether your current tax plan is optimized, contact our team to schedule a conversation.
