How LLC Owners Save on Taxes in 2026

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✓ Practitioner Verified Updated for 2026 | Plumber, HVAC & Electrician (Trade Business Owner) Tax Playbook
Tax Intelligence Engine › Playbooks › Plumber, HVAC & Electrician (Trade Business Owner) Tax Playbook

Plumber, HVAC & Electrician (Trade Business Owner) Tax Playbook

The complete 2026 tax strategy guide for plumbers, HVAC technicians, and electricians who own their own trade business — covering S-Corp election, vehicle and equipment deductions, worker classification, and retirement planning.

$20K–$80KTypical Annual Tax Savings
NOT SSTBFull QBI Deduction
Vehicle FleetSec. 179 and Bonus Depreciation
S-CorpOptimal Entity Above $60K Net
IRC §199A, §162, §179, §168(k) Entity: S-Corp or LLC taxed as S-Corp NOT SSTB: Trades are NOT field of health, law, or consulting Vehicle Fleet: §179 and bonus depreciation for trade vehicles

SSTB Analysis: Trades are NOT SSTB

Plumbers, HVAC technicians, and electricians who own their own trade business are NOT classified as specified service trades or businesses (SSTBs) under §199A. The SSTB list includes health, law, accounting, actuarial science, performing arts, consulting, athletics, financial services, and brokerage services — but NOT skilled trades. This means that trade business owners can claim the full 23% QBI deduction (OBBBA increased from 20%) on their net business income, subject to the W-2 wage test above the phase-in thresholds.

Net IncomeQBI DeductionW-2 Wage Test
Under $200K (single) / $400K (MFJ)Full 20% deductionNot required
$200K–$383K (single) / $400K–$483K (MFJ)Phase-in rangeW-2 wage test begins to apply
Over $383K (single) / $483K (MFJ)50% of W-2 wages or 25% + 2.5% UBIAW-2 wage test fully applies

S-Corp Election and Salary Planning

Trade business owners with net business income above $60,000 should strongly consider the S-Corp election. A reasonable salary for a plumber, HVAC technician, or electrician S-Corp owner is typically $60,000–$100,000, depending on trade, geographic market, and hours worked. The IRS uses BLS Occupational Employment Statistics and trade association salary surveys to benchmark reasonable compensation for trade S-Corps.

Vehicle and Equipment Deductions

Trade businesses typically operate a fleet of vehicles (vans, trucks, SUVs) for transporting tools and equipment to job sites. Vehicles over 6,000 lbs. GVWR (most commercial vans and trucks) qualify for §179 expensing (up to $1,220,000 in 2026) and bonus depreciation (60% in 2026). They are not subject to the luxury auto limits and can be fully deducted in the year of purchase.

Trade equipment (power tools, diagnostic equipment, HVAC test equipment, pipe threading machines) qualifies for §179 expensing and bonus depreciation. Trade business owners should maintain a detailed equipment inventory and depreciation schedule to support the deductions in the event of an IRS audit.

Worker Classification and Payroll Compliance

Worker classification is a significant compliance issue for trade businesses. Many trade businesses use subcontractors (1099) for overflow work or specialized tasks. Subcontractors who work regular hours, use the business's tools, and follow the business's procedures may be reclassified as employees by the IRS, triggering payroll tax liability and the TFRP.

Trade business owners should also be aware of state contractor licensing requirements, which may require employees to be licensed in certain trades. Misclassifying licensed employees as subcontractors can expose the business to both tax liability and state licensing penalties.

Retirement Planning for Trade Business Owners

Trade business owners can implement a Solo 401(k) through their S-Corp (if they have no full-time employees other than a spouse), contributing up to $23,500 as an employee deferral (plus $7,500 catch-up if age 50+) and up to 25% of W-2 salary as an employer profit-sharing contribution. Trade business owners with employees should evaluate the SEP-IRA vs. SIMPLE IRA vs. 401(k) tradeoffs based on the number of employees and the desired contribution level.

Trade business owners who are approaching retirement and have high income should consider adding a cash balance plan to contribute an additional $100,000–$200,000+ in pre-tax dollars annually. The cash balance plan is particularly attractive for trade business owners who have delayed retirement savings and want to accelerate contributions in the years before retirement.

Frequently Asked Questions

No — plumbers, HVAC technicians, and electricians are NOT classified as SSTBs under §199A. Trade business owners can claim the full 23% QBI deduction (OBBBA increased from 20%) on their net business income, subject to the W-2 wage test above the phase-in thresholds.

A reasonable salary for a plumber, HVAC technician, or electrician S-Corp owner is typically $60,000–$100,000, depending on trade, geographic market, and hours worked.

Yes — commercial vans and trucks over 6,000 lbs. GVWR qualify for §179 expensing (up to $1,220,000 in 2026) and bonus depreciation (60% in 2026). They are not subject to the luxury auto limits and can be fully deducted in the year of purchase.

Subcontractors who work regular hours, use the business's tools, and follow the business's procedures may be reclassified as employees by the IRS, triggering payroll tax liability and the Trust Fund Recovery Penalty (TFRP).

Trade business owners with employees should evaluate the SEP-IRA vs. SIMPLE IRA vs. 401(k) tradeoffs. The SIMPLE IRA is often the best choice for small trade businesses because it has lower contribution limits but simpler administration and lower cost than a 401(k).

More Tax Planning FAQs

How does the S-Corp election reduce self-employment tax?
An S-Corp election allows the owner to split income between a reasonable salary (subject to 15.3% FICA on the first $176,100 in 2026) and distributions (not subject to FICA). For a business owner with $200,000 in net profit paying an $80,000 salary, the annual SE tax savings are approximately $15,500–$18,500. The S-Corp must file Form 2553 within 75 days of formation.
What is the Section 199A QBI deduction and how does it apply?
The §199A deduction allows pass-through business owners to deduct up to 23% of qualified business income (QBI) from taxable income (increased from 20% under OBBBA). For taxpayers above $403,500 (MFJ) in 2026, the deduction is limited to the greater of 50% of W-2 wages or 25% of W-2 wages plus 2.5% of qualified property. Specified Service Trades or Businesses (SSTBs) phase out above this threshold.
What retirement plan options are available for self-employed professionals?
Self-employed professionals can establish a Solo 401(k) (up to $70,000 in 2026), a SEP-IRA (25% of net self-employment income up to $70,000), a SIMPLE IRA ($16,500 + $3,500 catch-up), or a Defined Benefit Plan (up to $280,000+ depending on age). The Solo 401(k) is the best option for most self-employed professionals because it allows the highest contributions relative to income.
How does the home office deduction work for self-employed professionals?
Self-employed professionals who use a dedicated home office space exclusively and regularly for business qualify for the home office deduction under §280A. The deduction is calculated as a percentage of home expenses (mortgage interest, utilities, insurance, depreciation) equal to the office square footage divided by total home square footage. The simplified method allows $5/sq ft up to 300 sq ft ($1,500 maximum).
What vehicle deductions are available for self-employed professionals?
Self-employed professionals can deduct vehicle expenses using either the standard mileage rate (70 cents/mile in 2026) or actual expenses. Vehicles with a GVWR over 6,000 lbs qualify for §179 expensing (up to $30,500 for heavy SUVs) and bonus depreciation without luxury auto limits. A mileage log must be maintained for either method. The vehicle must be used more than 50% for business to qualify for accelerated depreciation.
What is the Augusta Rule and how can it benefit business owners?
The Augusta Rule (§280A(g)) allows homeowners to rent their primary or secondary residence to their business for up to 14 days per year. The rental income is completely tax-free to the homeowner, and the business deducts the rent as a business expense. At $2,000–$3,000/day for 14 days, this strategy generates $28,000–$42,000 of tax-free income while the business deducts the same amount.
How does cost segregation apply to business owners who own real estate?
Cost segregation reclassifies building components into shorter depreciation categories eligible for bonus depreciation. For a $1M commercial property, cost segregation typically identifies $150,000–$250,000 of accelerated depreciation, generating $60,000–$100,000 in first-year deductions at the 100% bonus depreciation (restored by OBBBA for property placed in service after Jan 19, 2025) rate in 2026. A cost segregation study costs $5,000–$15,000 and typically has a 10:1+ ROI.
What is the difference between a sole proprietor and an S-Corp for tax purposes?
A sole proprietor pays self-employment tax (15.3%) on all net profit. An S-Corp owner pays FICA only on their reasonable salary, saving SE tax on distributions. For a business with $200,000 in net profit, the S-Corp saves $15,000–$20,000/year in SE tax. The S-Corp has additional costs (payroll, bookkeeping, tax preparation) of $2,000–$4,000/year, making the break-even point approximately $40,000–$50,000 in net profit.
How do I set up payroll for an S-Corp shareholder-employee to ensure compliance with FICA tax requirements?
To set up payroll correctly for an S-Corp shareholder-employee, first determine a reasonable salary based on industry standards and the individual's role, as required under §3121(d). Use Form 941 quarterly to report wages and withheld FICA taxes, ensuring Social Security tax is withheld up to the 2026 wage base limit of $184,500. Also, file Form 940 annually for FUTA tax compliance. Proper payroll setup avoids underpayment of employment taxes and subsequent IRS penalties.
What steps should I take to file the S-Corp election for a trade business owner?
To file the S-Corp election, complete and timely submit Form 2553, signed by all shareholders, by the 15th day of the third month of the tax year the election is to take effect, per §1362(b)(1). Ensure the entity meets eligibility criteria under Subchapter S, including having only allowable shareholders and one class of stock. Maintain documentation of the election and communicate the change to payroll and accounting teams to comply with subsequent filing requirements like Form 1120-S.
What documentation should be maintained to support the reasonableness of an S-Corp shareholder-employee's salary?
Maintaining thorough documentation is critical to defend the reasonableness of shareholder-employee compensation. This includes industry salary surveys, job descriptions, time logs, and financial statements demonstrating the business’s ability to pay. The IRS considers factors under §3121(d) such as duties performed, hours worked, and compensation paid to comparable employees. Retain these records for at least seven years to respond effectively to potential audits or inquiries.
What triggers IRS audit risk related to shareholder-employee compensation in S-Corporations?
Audit risk increases when an S-Corp shareholder-employee's salary appears unreasonably low relative to distributions, as this may indicate an attempt to avoid payroll taxes. The IRS scrutinizes discrepancies between reported wages and business profitability or industry benchmarks under §3121(d). Additionally, inconsistent payroll tax filings or failure to withhold and remit FICA taxes can prompt audits. Proper salary documentation and adherence to reasonable compensation norms mitigate these risks.
How should I advise a client who owns both a sole proprietorship and an S-Corp regarding their tax structure?
When a client owns both a sole proprietorship and an S-Corp, advise evaluating the benefits and limitations of each entity type. The sole proprietorship's income is subject to full self-employment tax under §1402, while the S-Corp allows potential FICA tax savings on distributions exceeding reasonable compensation. However, combining entities requires careful tracking of income and payroll to avoid double taxation or missed tax benefits. Recommend periodic reviews to optimize tax outcomes and compliance.
How does the treatment of distributions differ from salary in an S-Corp for tax purposes?
In an S-Corp, salary paid to shareholder-employees is subject to FICA taxes and reported on Form W-2, while distributions are generally not subject to self-employment or payroll taxes, per Subchapter S rules. However, distributions must not be used to circumvent reasonable compensation requirements under §3121(d). Improper classification can lead to IRS recharacterization, resulting in back taxes, penalties, and interest. Accurate separation and reporting are essential to maintain tax efficiency.
What key points should I communicate to a trade business owner client about reasonable compensation and payroll tax compliance?
Explain to the client that paying themselves a reasonable salary consistent with industry norms is mandatory to comply with §3121(d) and avoid IRS penalties. Stress that an unreasonably low salary to minimize payroll taxes can trigger audits and tax assessments. Emphasize the importance of maintaining thorough documentation and timely payroll tax filings, including Forms 941 and 940. Clear communication helps clients understand both the tax benefits and compliance obligations of operating as an S-Corp.

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Professional Disclaimer

The information on this page is intended for licensed tax professionals (CPAs, EAs, and tax attorneys) and is provided for educational and research purposes only. Tax law is complex and fact-specific — all strategies discussed are subject to limitations, phase-outs, and conditions that may not apply to every client situation. Practitioners should independently verify all information against current IRS guidance, Treasury Regulations, and applicable state law before advising clients. This content does not constitute legal or tax advice.

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