Plain English Guide

How Section 125 Works

By David Newman — Referral Partner, Section 125 Savings · San Pedro, CA
Published May 1, 2026

FICA. Pre-tax. Taxable income. Workers' Comp remuneration. Most business owners have never been walked through what these terms mean, why they show up on every paystub, and how a federal tax code from 1978 legally shrinks the number both sides pay on. This page is the plain-English version — written for an owner who has never heard any of these terms before.

Start with what FICA actually is

FICA is the federal payroll tax most owners know as “Social Security and Medicare.” The employer pays 7.65% of every dollar of W-2 wages. The employee pays another 7.65%. So on a $50,000/year employee, the employer pays $3,825 to the IRS for FICA alone, and the employee's W-2 reflects $3,825 withheld for the same. That's before federal income tax. Before state income tax. Before Workers' Comp.

FICA goes up automatically with payroll. There's no deduction, no credit, no exemption that lets you simply not pay it on a compliant payroll system. It's mechanical — every dollar of wages produces 7.65% in employer FICA tax, full stop. Or rather, that used to be the only way to think about it. Section 125 is the legal exception.

What “pre-tax” means in practice

When you see “pre-tax” on a paystub or a benefits document, it means a deduction is taken out of the employee's gross wages beforethe IRS calculates federal tax, FICA, and state tax. The IRS treats those pre-tax amounts as compensation that was never actually received in cash — so it doesn't count as wages for tax purposes.

The classic pre-tax mechanism most owners know is the 401(k) deferral. An employee defers $500/paycheck into a 401(k), and that $500 is excluded from federal income tax — but, importantly, 401(k) deferrals do notreduce FICA. The 7.65% FICA still applies to the full gross. Section 125 is different. The pre-tax salary reduction under § 125 reduces FICA, federal income tax, and (in most states) state income tax all at once. That's the structural difference that makes the math work for both sides.

Now the Section 125 mechanism

Section 125 of the Internal Revenue Code, enacted in 1978, authorizes a structure called a “cafeteria plan.” Inside a compliant cafeteria plan, the employee can elect to redirect a portion of their salary — pre-tax — toward qualified benefits. In the modern Section 125 Preventive Care plan, that redirection is $1,200/month per employee. The redirection funds an integrated wellness benefit package: 24/7 telemedicine, 400+ free generic medications, dental savings, mental health counseling, and the participatory wellness component required under HIPAA wellness program rules.

The employee's gross wages don't change. The number on the “gross wages” line of the paystub stays at $2,600 (or whatever the employee's monthly base is). What changes is the taxablewages line — that drops by $1,200. Federal income tax, FICA, and state tax all calculate on the new lower number. Net effect: the employee's take-home goes up by ~$72/month, the employer's FICA expense drops by $91.81/month, and the wellness benefits get delivered.

The Workers' Comp side — usually the bigger number

Workers' Comp premiums are calculated as a percentage of taxable payroll. Every state's WC manual rules and every NCCI circular references the federal definition of remuneration, which excludes Section 125 elections by definition. So when Section 125 reduces taxable payroll by $1,200/month per enrolled employee, your WC manual premium base shrinks by the same amount. The carrier's annual audit captures it at the next renewal cycle.

For low-rate industries (medical and dental groups at ~2% WC), the savings are modest. For middle-rate industries (manufacturing, senior care, janitorial at 6–7%), the WC savings are meaningful but smaller than the FICA line. For high-rate industries (trucking at 9%, drayage at 10%, construction at 14%), the estimated WC reduction frequently exceeds the FICA savings entirely.

For a 30-employee construction company at the 14% WC class rate, the math runs like this: monthly taxable payroll drops from $78,000 to $42,000 (30 employees × $1,200/month reduction × 12 months = $432,000/year less in taxable payroll). The annual WC premium calculation base drops by the same $432,000 — and at a 14% WC rate, that's an estimated $60,480 reduction on the manual premium line. Add the $20,448 in net FICA savings (30 × $681.60) and the combined estimated annual savings is $80,928. That's 30 employees, one program, no operational change.

Workers' Comp savings are estimates that vary by class code, experience modifier, and carrier — your free 15-minute analysis produces the operator-specific number against your actual NCCI class code and modifier history.

Why your CPA hasn't mentioned this

Most CPAs handle tax returns and tax-savings strategies in the categories they're asked about: depreciation, retirement plans, entity structure, deductions. Section 125 cafeteria plans sit in the benefits administration category — typically handled by a benefits broker or a benefits administrator, not by the CPA. So the CPA hasn't mentioned it because it's not in the category they're asked about, not because it doesn't exist.

Once your CPA sees the Hitesman opinion letter (May 2025) and the CBIZ Advisors LLC review (August 2025), they typically confirm the program operates as described in 30–60 days. Both documents are share-able PDFs available on your free analysis call — independently verified as IRS-compliant by HitesmanLaw P.A. and CBIZ Advisors LLC.

The case-study evidence on this site is concentrated in operations where the CFO or owner is themselves a CPA, attorney, or regulated professional — Black Tiger Transportation (CEO is a CPA), Affinity Hospice (CFO is a CPA), Golden Living Point Loma (owner is a practicing attorney), Avant-garde restaurant group (three law firms reviewed before signing). Those operators didn't take the program on someone else's word; they verified it themselves before enrolling. Your own CPA can do the same in the same window.

How It Works

The IRS Has Been Taking More Than They Need To. Here's the Legal Fix.

Every dollar you pay an employee gets taxed before it reaches them. You pay 7.65% in FICA taxes on their full gross wages. They pay another 7.65% on their end. Section 125 — a federal tax code in place since 1978 — legally shrinks the taxable number. Both of you pay less. Immediately.

Panel 1 · The FICA mechanism

Before
Gross wages$2,600/mo
Pre-tax reduction$0
Taxable income$2,600/mo
Employer FICA$198.90/mo
Employee FICA$198.90/mo
Employee take-home$2,401/mo
After Section 125
Gross wages$2,600/mo
Pre-tax reduction$1,200/mo
Taxable income$1,400/mo
Employer FICA$107.10/mo
Employee FICA$107.10/mo
Employee take-home$1,365/mo
FICA savings

You save $91.81 per employee per month in FICA taxes. $1,101.60 gross per employee per year. $681.60 net per employee per year after the program administration fee — which is fully covered by the FICA savings the program generates.

Panel 2 · The employee story

Your Employees Get a Raise. You Don't Spend a Dollar More.

The $1,200 pre-tax reduction funds a wellness benefit package — telemedicine, free medications, dental savings. In exchange your employee receives $72 more in their paycheck every month and $115 in healthcare benefits. The program administration fee is fully covered by your FICA savings. Your net cost: $0.

$72
Per month — added to paycheck

Cash. Automatic. Every payday.

$115
Per month — healthcare benefits
  • 24/7 telemedicine
  • 400+ free generic medications
  • Dental savings up to 60%
  • Mental health counseling
  • Entire household covered
$187
Per month — total employee value

Zero additional cost to you.

Program administration fee fully covered by FICA savings. Net employer cost: $0.

Panel 3 · The Workers' Comp multiplier

For Industries Like Trucking and Construction — This Is Where It Gets Interesting.

Your Workers' Comp premium is calculated on taxable payroll. Section 125 reduces that base automatically — producing a second estimated savings number most business owners never see.

Workers' Compensation insurance premiums are calculated as a percentage of your taxable payroll. When Section 125 reduces every employee's taxable wages by $1,200/month, your WC premium calculation base shrinks by the same amount. This isn't a separate program. It's the same reduction producing a second estimated savings number. For low-risk industries like medical offices the WC savings is modest. For trucking, construction, and home health — it can exceed the FICA savings entirely.

Construction company · 30 employees · 14% WC rate
 
Before
After
Monthly taxable payroll
$78,000
$42,000
Annual taxable payroll
$936,000
$504,000
WC premium (14%)
$131,040/yr
$70,560/yr
WC SAVINGS (estimated)$30,240/year
FICA SAVINGS$20,448/year
COMBINED (estimated)$50,688/year

A 30-person construction company saves an estimated $80,928/year — from one program they’ve never heard of.

Trucking company · 40 employees · 9% WC rate
WC savings (estimated)~$25,920/year
FICA savings$27,264/year
Combined (estimated)~$53,184/year

Workers' Comp savings are estimates based on taxable payroll reduction and vary by industry classification code, experience modification factor, and carrier. Your exact savings are confirmed in your free analysis.

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FAQ

Common questions

FICA (Federal Insurance Contributions Act) is the federal payroll tax that funds Social Security and Medicare. Both employer and employee pay 7.65% of every dollar of W-2 wages — Social Security at 6.2% and Medicare at 1.45%. So on a $50,000/year employee, the employer pays $3,825 in FICA tax and the employee pays the same. Section 125 legally reduces the wage base both sides pay on, so both sides pay less.
Pre-tax means a deduction is taken out of an employee’s gross wages BEFORE federal income tax, FICA, and (in most states) state income tax are calculated. The IRS treats pre-tax amounts as compensation that was never actually received, so they’re not in the wage base. A $1,200/month Section 125 election reduces the taxable wage base by $1,200/month per employee — which lowers both employer FICA (7.65% × $1,200 = $91.81/month per employee) and employee FICA by the same amount.
Workers’ Comp premiums are calculated on taxable payroll — the same wage base FICA uses. Every WC carrier’s rate manual references the federal definition of remuneration, which excludes Section 125 elections. So when Section 125 reduces taxable payroll by $1,200/month per enrolled employee, the WC manual premium calculation base shrinks by the same amount. The carrier’s annual audit captures the reduction at the next renewal cycle. For higher-rate industries (trucking, construction, drayage, manufacturing), the WC savings are estimated at 30–60% of the manual premium and frequently exceed the FICA savings entirely.
Yes. The employee’s pre-tax salary reduction lowers their federal income tax, FICA, and (in most states) state income tax — so their net take-home pay goes up. The math typically works out to about $72/month per employee in additional take-home pay. That’s real cash on the paystub, every payday.
The wellness benefits — 24/7 telemedicine, 400+ free generic medications, dental savings, mental health counseling — are funded by the same $1,200/month pre-tax salary reduction. The employee’s salary reduction goes into the cafeteria plan structure, which then funds the integrated benefit menu under IRC § 125 qualified-benefit rules. The employer doesn’t pay for the benefits; the program admin fee is fully covered by the employer’s FICA savings. Net employer cost: zero.
A POP only lets employees pay their share of group health insurance premiums on a pre-tax basis. It produces modest FICA savings — typically $200–$400/employee/year — and offers no additional benefits beyond what the underlying group health plan already provides. A complete Section 125 Preventive Care plan layers a $1,200/month salary reduction on top of the existing group health plan, funds the integrated wellness benefits, and produces the full $681.60/employee/year net FICA savings plus the WC reduction described above.
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Darcy L. Hitesman, J.D.

HitesmanLaw P.A. · Minneapolis, MN

35+ years as an Employee Benefits attorney specializing in IRC Section 125, ERISA, HIPAA, and the ACA. Her May 5, 2025 opinion letter concludes: “In this firm's opinion, the Program described satisfies applicable IRS requirements.”

She specifically reviewed the IRS Chief Counsel Advice memoranda on "double-dip" arrangements — the exact schemes the IRS has flagged — and concluded this program is built differently and compliantly.

Named a Super Lawyer every year since 2000. AV-rated (highest possible rating) in Martindale-Hubbell since 1998.
Co-author: ERISA Compliance for Health & Welfare Plans (Thomson Reuters/EBIA) — the national compliance standard manual since 1999.
Member, Technical Advisory Group — Employers Council on Flexible Compensation. She helps set the industry standards for Section 125 plans nationally.

CBIZ Advisors LLC

Top-7 U.S. Accounting Firm · Cleveland, OH · 135,000+ Clients

CBIZ independently reviewed the program against IRC §§ 125, 105, and 106, plus ERISA, ACA, and COBRA requirements. Their August 22, 2025 letter concludes: “If operated per its provisions, the Program appears to satisfy the requirements of ERISA, the ACA, and COBRA as well.”

This review was commissioned by Affinity Hospice's CEO before enrolling his nationwide organization — and the CFO (himself a CPA) shared the letter publicly in his testimonial.

Top-7 U.S. accounting firm. 10,000+ employees across 100+ offices. Serves 135,000+ clients nationally.
Review covers: IRC §125 cafeteria plan, §105/106 wellness benefit rules, ERISA plan asset treatment, ACA integration, and COBRA obligations.
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🏛️

Direct From the U.S. Government

Section 125 has been in the Internal Revenue Code since 1978. Congress wrote it there specifically to encourage employers to fund preventive healthcare for American workers. This is not a loophole — it is the precise, intended use of a 47-year-old federal law, grounded in IRS Revenue Ruling 69-154, the specific published ruling supporting the benefit payment structure.

→ Verify on IRS.gov — Section 125 Cafeteria Plans ↗

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$500K legal protection per enrolled employer · IRS Section 125 · Federal law since 1978