Business Owner Tax Strategies: 8 Ways to Reduce Taxes in 2026

Business owners have tax levers that W-2 employees simply don't. An employee can max a 401(k) and call it a day. A business owner can stack five different retirement plans, optimize a salary/distribution split, harvest a pass-through entity tax deduction, and rent their home to their corporation — all in the same tax year. Here are the eight strategies with the biggest impact, with real 2026 numbers.

1. Stack retirement plans to shelter $150K–$410K per year

Retirement contributions are the single largest tax lever for most business owners. The math is straightforward: every dollar contributed is a dollar that doesn't get taxed now. At a 37% marginal rate plus 5% state, a $200,000 contribution saves approximately $84,000 in year-one taxes.

The 2026 limits — and how they stack:

2026 limits per IRS Notice 2025-67 and §415(b). Solo 401(k) ages 60–63 super-catch-up per SECURE 2.0 §117.

The critical insight: these plans can be stacked. A 52-year-old S-corp owner with $500K in net business income can contribute $80,000 to a Solo 401(k) and add a Cash Balance Plan on top, sheltering $200K–$300K from current-year taxes. The combination is permanent — not a one-time election — and compounds over time.

→ See the full analysis: Retirement Plans for Business Owners: 2026 Comparison Guide and Cash Balance Plans: Age-Based Contribution Table.

2. Optimize your S-corp salary/distribution split

If you're an S-corp owner, your income can flow as either W-2 wages (subject to FICA: 15.3% on first $184,500, 2.9% above) or distributions (not subject to FICA). This split is the most universally available tax lever for S-corp owners.

The distribution benefit has limits: distributions don't count as "earned income" for retirement plan purposes. A lower salary means lower retirement plan contribution limits for some plans. Model the FICA savings against the retirement plan opportunity cost before setting your salary.

→ See the full analysis: S-Corp Reasonable Compensation: How to Set Your Salary.

3. Claim the Section 199A QBI deduction (20% off pass-through income)

The Section 199A qualified business income deduction gives eligible pass-through owners a deduction equal to 20% of their qualified business income — a permanent deduction under OBBBA. At a 37% marginal rate, this brings the effective rate on pass-through income down to about 29.6% on that portion.

The 2026 parameters:

• Threshold for full deduction: Taxable income ≤ $201,750 single / ≤ $403,500 MFJ
• Phaseout range: $201,750–$351,750 single / $403,500–$553,500 MFJ
• Above the phaseout: Deduction is limited to the greater of (a) 50% of W-2 wages or (b) 25% of W-2 wages + 2.5% of UBIA of qualified property — for non-SSTB businesses. SSTBs phase out entirely.
• Minimum deduction: $400 (OBBBA floor, prevents the deduction from disappearing to zero for borderline SSTBs).

Thresholds per IRS Rev. Proc. 2025-32. OBBBA made §199A permanent and widened phaseout range.

For S-corp owners above the phaseout, the W-2 wage strategy matters: paying yourself a higher salary increases your W-2 wages, which increases the 50%-of-W-2 limitation on your QBI deduction. This partially offsets the FICA cost of a higher salary — another reason the salary/distribution optimization isn't as simple as "minimize salary."

→ Calculate your deduction: Section 199A QBI Deduction Calculator.

4. Elect Section 179 and 100% bonus depreciation

Equipment, vehicles, computers, and qualified improvement property can be deducted in full in the year purchased — not depreciated over 5–7 years. In 2026, two tools make this possible:

• Section 179: $2,560,000 limit, must stay within taxable income (can't create a loss), elect per-asset.
• Bonus depreciation: 100% permanent under OBBBA for property acquired after January 19, 2025. No income cap — can create a net operating loss.

The practical effect: a $200,000 equipment purchase in 2026 can generate $200,000 of current-year deductions. At a 37% federal + 5% state rate, that's ~$84,000 in tax savings in year one instead of spreading them over seven years.

One planning note: accelerating depreciation reduces your qualified business income, which reduces your §199A QBI deduction. The net tax saving is still almost always positive — but run the full projection before making a major equipment purchase in December.

→ See the full analysis: Section 179 & Bonus Depreciation: 2026 Complete Guide.

5. Pass-through entity tax (PTET) election

The pass-through entity tax (PTET) is one of the most powerful — and underused — strategies for S-corp and partnership owners with significant state income tax liabilities.

How it works

Under IRS Notice 2020-75,¹ S-corporations and partnerships can elect to pay state income tax at the entity level rather than having the tax flow through to owners' personal returns. The entity deducts the state tax as a business expense — fully deductible on the federal return, not subject to the individual SALT cap. The state then gives each owner a credit for their allocable share of the state-level tax paid.

The net effect: state income taxes that would be only partially deductible (or not at all) on a personal return become fully deductible at the entity level. For an owner in a 10% state with $500,000 of pass-through income, the state tax bite is $50,000. Under the PTET election, that $50,000 is a business deduction; without it, it's subject to the individual SALT cap.

The 2026 SALT cap context

The OBBBA raised the individual SALT deduction cap to $40,400 for 2026.² The cap phases out for taxpayers with MAGI above $505,000 — at a rate of $0.30 reduction per dollar of MAGI over the threshold — and reaches an effective cap of $10,000 (the old TCJA limit) for MAGI above approximately $606,000.

PTET is most valuable for high-income owners in high-tax states (California at 13.3%, New York at up to 10.9%, New Jersey at 10.75%, Oregon at 9.9%). For an owner with $800,000 in pass-through income in California, the PTET election can generate $50,000–$80,000 in additional federal deductions that would otherwise be nondeductible above the $10,000 SALT floor.

State availability and election deadlines

Over 36 states have enacted PTET regimes as of 2026. Each state has its own election deadline (often March 15 or the entity's fiscal year-end), payment schedule (many require quarterly estimated PTET payments to get the current-year deduction), and credit mechanism. Confirm your specific state's rules with your CPA — missing the election deadline means waiting another year.

6. Self-employed health insurance deduction (§162(l))

If you're an S-corp owner with more than 2% of the company's shares, you can't take health insurance premiums as a tax-free fringe benefit the way regular employees can. But you can get effectively the same result through a specific two-step process that most business owners either do wrong or skip entirely.

The correct process

1. S-corp pays or reimburses the premiums. The company either pays the insurer directly or reimburses you after you pay personally.
2. Include premiums in W-2 Box 1 — but NOT Box 3 or Box 5. This is the critical step most payroll providers get wrong. Box 1 = taxable wages (adds to your gross income). Box 3/5 = Social Security and Medicare wages. The premiums should NOT be in boxes 3/5 — which means they're not subject to FICA. If your payroll provider puts them in Box 3/5, you're paying unnecessary FICA on them.
3. Deduct 100% of premiums on Schedule 1 (line 17) of your personal return as self-employed health insurance under §162(l).³ This gets you the full deduction without itemizing.

The QBI interaction (same caveat as retirement plans)

Like retirement contributions, the §162(l) deduction reduces your adjusted gross income — and also reduces your qualified business income eligible for the §199A deduction. If you're claiming the QBI deduction, every $10,000 in health insurance premiums effectively reduces your QBI deduction by up to $2,000 (20%). That's still well worth it, but worth factoring into the overall projection.

Common mistake: the "QSEHRA/ICHRA shortcut"

Businesses with employees sometimes try to use a Health Reimbursement Arrangement (HRA) to handle owner health insurance. Be careful: the §162(l) rules for 2%-plus S-corp shareholders are separate from the HRA rules, and HRA payments to those shareholders are generally not deductible the same way. Use the W-2 inclusion approach above.

7. Accountable plan reimbursements

An accountable plan is one of the simplest, most underused tax tools available to business owners who operate as S-corps or partnerships. It lets you reimburse yourself — tax-free — for legitimate business expenses you paid personally, while the business takes the deduction.

Why this matters post-TCJA

Before the Tax Cuts and Jobs Act (2017), employees could deduct unreimbursed business expenses on Schedule A as a miscellaneous itemized deduction. TCJA eliminated that deduction through at least 2025 (OBBBA extended the TCJA framework). For S-corp owner-employees, that meant expenses like home office, business mileage, and professional dues — paid personally — effectively became non-deductible. An accountable plan restores the deduction by shifting the expense to the entity level.

What qualifies

• Home office. If you have a dedicated home office space used regularly and exclusively for business, the S-corp can reimburse you based on actual home office expenses (utilities, insurance, depreciation, mortgage interest or rent — prorated by square footage). The business deducts it; you receive tax-free reimbursement. Note: the home office must pass the "regular and exclusive use" test regardless of whether you also have a separate business location.
• Business mileage. Reimburse at the IRS standard mileage rate (verify the current rate at IRS.gov) for business miles driven in your personal vehicle. Keep a contemporaneous mileage log with destination, business purpose, and odometer readings.
• Cell phone (business use portion). If your cell phone is used for business, the business-use percentage of the bill is reimbursable. Document the business vs. personal use split.
• Professional memberships, subscriptions, and continuing education with a clear business purpose.
• Business meals (50% limit still applies at the entity level — the deductibility limitation is at the business, not in how you're reimbursed).

Rules for the plan to be "accountable"

Under §62(c),⁴ the plan must satisfy three requirements. If it doesn't, reimbursements become taxable wages:

1. Business connection: The expense must have an ordinary and necessary business purpose.
2. Substantiation: You must provide receipts, mileage logs, or other documentation within a reasonable time (IRS treats 60 days as a safe harbor).
3. Return excess advances: If you receive an advance and spend less, the excess must be returned within a reasonable period (120 days is the safe harbor).

8. Augusta Rule: rent your home to your business (§280A(g))

Under Internal Revenue Code §280A(g), if you rent your personal residence to your business for 14 or fewer days per year, the rental income is completely excluded from your gross income — you pay zero tax on it. The business, meanwhile, deducts the rental expense as an ordinary business cost.

This is sometimes called the "Augusta Rule" because Augusta, Georgia homeowners famously rent their homes during the Masters golf tournament — 14 days or fewer — without reporting the income.

How business owners use it

An S-corp owner holds quarterly board meetings or annual business retreat/planning sessions at their home. The corporation pays the owner fair market rent for the use of the home that day. The corporation deducts the expense (say, $2,500/meeting for a home with a fair rental value of $250/hr for an 8-hour board meeting day). The owner receives the rental income tax-free — it doesn't even need to be reported on Schedule E as long as the rental is 14 days or fewer per year.

Requirements and documentation

The IRS scrutinizes Augusta Rule arrangements, so documentation is essential:

• The meetings must actually occur — with corporate minutes, agendas, and attendance records.
• The rental must be at fair market value — obtain a comparable rental analysis for similar spaces in your area. A hospitality venue rental comparison is the most defensible approach.
• Written rental agreement between you (as landlord) and your corporation (as tenant).
• Strictly ≤14 days per year. The moment you rent your home for the 15th day, the exclusion disappears for all rental income — not just the excess days. This is a hard cutoff, not a gradient.
• Your home must be your personal residence — a vacation property you rarely use doesn't qualify as a personal residence under §280A(d) unless you use it personally for more than 14 days or more than 10% of rental days.

This strategy works best for business owners who already hold regular board meetings or business planning sessions and want to formalize them. Converting informal meetings into documented, rent-paid corporate events is a legitimate restructuring — not a sham if the substance is there.

How these strategies interact

These eight strategies aren't independent. They interact — and sometimes trade off — in ways that affect the optimal combination for your specific situation:

• Higher retirement plan contributions → reduce QBI → reduce §199A deduction
• Higher S-corp salary → more retirement plan contribution room → more FICA → more W-2 wages for §199A W-2 wage limit
• PTET payment → reduces entity income → reduces pass-through QBI
• §162(l) health insurance deduction → reduces AGI → reduces QBI
• Large bonus depreciation → reduces QBI → may push you below §199A phaseout threshold (which could be good)

The interaction effects mean that a mechanical checklist produces suboptimal results. The real value of a business-owner specialist advisor is building a year-end model that optimizes all of these levers simultaneously against your actual income, entity structure, and state situation — before the tax year closes and your options narrow.

Sources

1. IRS Notice 2020-75 — Forthcoming Regulations on Deductions for Certain State and Local Income Taxes. Confirms that partnerships and S-corps can elect to pay and deduct state income taxes at entity level; partners/shareholders then receive a corresponding credit.
2. HCVT — OBBBA Expands SALT Deduction Cap. Documents the $40,400 cap for 2026 (1% annual increase through 2029), phaseout beginning at $505,000 MAGI, effective cap of ~$10,000 above $606,000 MAGI.
3. IRS — S Corporation Compensation and Medical Insurance Issues. Official IRS guidance on §162(l) treatment for 2%-plus shareholders: W-2 Box 1 inclusion, no FICA, Schedule 1 deduction.
4. 26 U.S.C. § 62 — Adjusted Gross Income Defined (Cornell LII). Statutory basis for accountable plan treatment; §62(c) defines when reimbursement arrangements qualify as accountable plans.
5. 26 U.S.C. § 280A — Disallowance of Certain Expenses in Connection with Business Use of Home (Cornell LII). Statutory text of §280A(g): rental income exclusion for 14-or-fewer-day rentals of personal residence.

SALT cap per OBBBA (enacted July 2025) and HCVT analysis. PTET per IRS Notice 2020-75. Health insurance rules per IRS guidance on S-corp compensation. Accountable plan rules per §62(c). Augusta Rule per §280A(g). All 2026 values current as of May 2026.