Section 125 Plans for HVAC and Plumbing Contractors: A 2026 Guide

HVAC and plumbing contractors run on thin labor margins, seasonal demand swings, and a mix of W-2 technicians and 1099 subcontractor crews, which makes a Section 125 plan one of the few benefit tools that fits how these businesses actually pay people. A Section 125 plan, also called a cafeteria plan, is an IRS-approved payroll arrangement that lets employees pay for health coverage and other qualified benefits before federal income tax and FICA tax are calculated. For a trade with median technician pay in the low $60,000s and constant pressure to compete for skilled labor, that pre-tax mechanism turns into real money on both sides of the paycheck.

What Is a Section 125 Plan and Why Does It Matter for HVAC and Plumbing Contractors?

A Section 125 plan is a written benefits arrangement under Internal Revenue Code Section 125 that lets an employer's W-2 employees choose to pay for health insurance premiums, and sometimes other benefits, through a pre-tax payroll deduction instead of after-tax pay. Because the deduction happens before taxes are calculated, both the employee and the employer avoid FICA tax, which is Social Security and Medicare tax, on that portion of pay. Read the full breakdown in Summit Health Benefits' Section 125 cafeteria plan guide.

FICA tax is 7.65% on the employer side and 7.65% on the employee side, for a combined 15.3%, per the IRS. Every dollar that moves from post-tax pay to a pre-tax Section 125 election saves both sides 7.65 cents. That math does not change based on company size, so an 8-technician shop and a 60-technician regional company both save at the same rate per dollar elected. The full mechanics are covered in Summit Health Benefits' FICA tax savings guide.

Why Do HVAC and Plumbing Companies Struggle to Offer Health Benefits?

HVAC and plumbing contractors struggle to offer health benefits because most are small, thinly staffed businesses competing against national franchises for the same limited pool of licensed technicians. The U.S. Census Bureau's 2023 County Business Patterns data counted 111,207 employer establishments nationally under NAICS code 238220, the plumbing, heating, and air-conditioning contractors category, employing 1,214,761 workers on a combined $89.5 billion in annual payroll. Another 178,663 businesses in the same trade operated with no employees at all, according to the Census Bureau's 2023 Nonemployer Statistics, meaning most of the industry is a single owner-operator or a handful of W-2 technicians.

Health coverage costs are also rising faster than most trade contractors can absorb. The Peterson-KFF Health System Tracker reported that small businesses with ACA-compliant group plans faced a median proposed premium increase of 11% for 2026, with about 10% of insurers requesting increases of 20% or more, part of a broader multi-year trend covered in Summit Health Benefits' state-by-state premium increase guide. A contractor already competing on hourly rate against a larger regional operator cannot easily pass that cost onto a residential customer's invoice, which pushes many owners to drop group coverage entirely rather than raise it.

Technician pay adds a third pressure point. The Bureau of Labor Statistics' May 2025 Occupational Employment and Wage Statistics survey put the median annual wage for heating, air conditioning, and refrigeration mechanics and installers at $61,010, and the median for plumbers, pipefitters, and steamfitters at $63,800. At those wage levels, a technician's take-home pay matters as much as the sticker price of a benefit, which is exactly the gap a Section 125 plan is built to close.

How Much Can an HVAC or Plumbing Company Save With a Section 125 Plan?

An HVAC or plumbing contractor saves $91 to $136 per enrolled employee per month in employer-side FICA tax with a Section 125 plan, before accounting for the administration fee. Summit Health Benefits charges a flat $35 per enrolled employee per month to administer the plan, so the net benefit to the employer runs $56 to $101 per employee per month, or roughly $672 to $1,212 per employee per year. The table below shows how that scales across common HVAC and plumbing company sizes.

Every technician who enrolls also sees a paycheck effect. Take-home pay rises $70 to $110 per month for each participating technician, since their share of the premium comes out before federal income tax and FICA are calculated instead of after. For a shop trying to hold onto licensed journeymen in a tight labor market, that recurring raise costs the business nothing beyond the $35 monthly admin fee per employee.

The fee itself comes out of the payroll tax the company was already going to send to the IRS. A lower Form 941 FICA deposit funds the admin fee, not the contractor's operating cash, which is why the arrangement works even for a shop running on tight seasonal cash flow.

Are Apprentices and Entry-Level Technicians Eligible for Section 125 Benefits?

Yes, any W-2 employee is eligible for a Section 125 plan regardless of wage tier, which means a first-year apprentice qualifies the same as a licensed journeyman or master technician. There is no minimum salary or job title requirement under IRC Section 125 itself. A shop sets its own eligibility rules in the plan document, commonly a 30 to 90 day waiting period after hire, and those rules apply evenly across every wage level.

Because an apprentice typically earns less than a journeyman, the plan can offer a benefit menu with a lower-cost election tier that still fits a smaller paycheck. The pre-tax savings scale with whatever amount each technician actually elects, so a lower earner captures a smaller dollar savings and a higher earner captures more, but everyone saves at the same 7.65% employer rate and the same marginal tax rate benefit on their own side.

One compliance step matters here. Section 125 plans run three annual nondiscrimination tests that cap how much of the plan's total benefit value can concentrate among owners and officers, generally employees earning above $160,000 in 2026 or owning more than 5% of the business, at 25% of total benefits. A wide pay spread from apprentice to master technician does not itself create a testing problem, since the tests look at who can participate, not how much each person individually elects.

Do Seasonal AC-Season Hires Count Toward the ACA Employer Mandate?

Seasonal AC-season hires count toward the ACA employer mandate only if they are reasonably expected to average 30 or more hours a week, regardless of how the company labels the job internally. The Affordable Care Act's employer shared responsibility mandate applies to applicable large employers, generally those with 50 or more full-time-equivalent employees across all commonly owned locations, and full-time-equivalent counts must include every technician who crosses that hours threshold, seasonal or not.

A true short-stint hire brought on for a defined, limited AC-season stretch and working fewer than 30 hours a week generally does not count as full-time under the standard measurement period the IRS and CMS use for ACA purposes. A multi-branch company that ramps up staffing every summer should run this calculation before AC season starts, not after, since miscounting seasonal FTEs can push a company over the 50-employee ALE threshold without the owner realizing it. Summit Health Benefits covers the full mandate rules in its ACA employer mandate guide.

What About 1099 Subcontractor Crews?

1099 subcontractor crews cannot participate in an HVAC or plumbing company's Section 125 plan, no matter how many jobs they complete for the business in a given year. IRC Section 125(d)(1)(A) limits cafeteria plan eligibility to common-law employees, and a subcontracted crew that invoices the company as an independent business does not meet that definition, even during a busy season when the company relies on subs for overflow work.

This distinction matters at nondiscrimination testing time too, since 1099 workers are excluded from the plan's eligibility and participation calculations entirely. A contractor that leans heavily on subcontracted labor during peak months should keep a clean, documented split between its true W-2 payroll and its subcontractor roster before enrolling anyone in benefits. Summit Health Benefits breaks down the full eligibility question in its guide on whether 1099 contractors can get Section 125 benefits.

What Other Health Benefit Options Work for Small HVAC and Plumbing Companies?

Small HVAC and plumbing companies that are not ready for a full group health plan can pair a Section 125 premium-only plan with other benefit structures that fit an hourly, field-based workforce. An Individual Coverage Health Reimbursement Arrangement, or ICHRA, lets an employer set a fixed reimbursement amount that technicians use to buy their own individual marketplace plan, with no group plan minimum participation rules to manage. Summit Health Benefits explains the mechanics in its ICHRA guide.

A shop under 25 full-time-equivalent employees with average wages under the IRS threshold may also qualify for the Section 45R Small Business Health Care Tax Credit if it purchases coverage through the SHOP Marketplace, which can offset up to half of the employer's premium contribution. Contractors weighing every option, including level-funded plans and health-sharing arrangements, should review Summit Health Benefits' small business health insurance alternatives guide before committing to one structure.

How Do HVAC and Plumbing Companies Set Up a Section 125 Plan?

Setting up a Section 125 plan for an HVAC or plumbing company starts with a written plan document and takes most contractors a few weeks from signed agreement to first pre-tax payroll. The employer first separates its true W-2 payroll from any 1099 subcontractor crews, since only W-2 staff are eligible. Next, a plan document and summary plan description are drafted that account for hourly base pay, overtime, and any on-call or emergency dispatch differentials the company runs.

Enrollment typically happens through a short election period where each technician, from apprentice to master, picks a pre-tax election amount that fits their pay. The employer then configures payroll deduction codes, whether the company runs ADP, Gusto, Paychex, or QuickBooks Payroll, so the FICA and income tax savings begin on the very next payroll cycle.

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Frequently Asked Questions

Sources

This article cites the Internal Revenue Service on Section 125 cafeteria plan rules, FICA tax rates, and the 2026 highly compensated employee threshold; the U.S. Census Bureau's 2023 County Business Patterns and 2023 Nonemployer Statistics for NAICS code 238220; the Bureau of Labor Statistics' May 2025 Occupational Employment and Wage Statistics survey and Occupational Outlook Handbook; the Peterson-KFF Health System Tracker on 2026 small business premium increases; and the Centers for Medicare and Medicaid Services on ACA employer mandate measurement period rules.