What Is Section 125 on Your W-2? A Plain-English Guide for Employees

If you're looking at your W-2 or pay stub and seeing "Section 125", "Sec 125", "CAF 125", or "Cafeteria Plan" listed somewhere — usually in Box 14 of your W-2 or in your pay stub deductions — you're not the only one searching what it means. Hundreds of thousands of W-2 employees in the U.S. type this exact question into Google every month.

Here's the plain-English answer, what it puts in your paycheck, and how to get the most out of it if your employer hasn't fully enrolled yet.

The 30-second answer

Section 125 is the part of the federal tax code (Internal Revenue Code § 125) that lets your employer deduct certain benefits from your paycheck before taxes are calculated. The dollars labeled "Section 125" on your W-2 are the amount your employer excluded from your taxable income that year — typically because you're enrolled in:

• Pre-tax group health insurance premiums
• A Flexible Spending Account (FSA) for medical or dependent care
• A Health Savings Account (HSA) contribution routed pre-tax
• A Section 125 Preventive Care wellness program (the variant that creates the $72/paycheck raise we'll cover below)

Because those dollars never become taxable wages, you don't pay federal income tax, Social Security tax, or Medicare tax on them. That's the basic mechanism — and it's been federal law continuously since 1978.

Why it shows up on your W-2

The IRS requires employers to disclose certain pre-tax benefits on your W-2 in Box 14 so you can verify the math, claim related deductions, and understand your earnings record. Box 14 is the "informational" box — it doesn't change your tax filing directly, but it tells you (and your accountant) what was happening behind the scenes in your paycheck.

If you see "Sec 125", "CAF 125", or "Section 125" in Box 14 with a dollar amount, that's your annual pre-tax deduction total. If your annual W-2 wages in Box 1 look lower than your gross compensation, this is usually why — and it's a good thing. You paid tax on a smaller number.

See your raise — instantly

If your employer is running a complete Section 125 Preventive Care program, you should be taking home approximately $72 more per paycheck automatically. Use the Paycheck Decoder below to see what that means for your specific monthly take-home pay.

What if my employer isn't running Section 125 Preventive Care?

This is the most common scenario for the people searching this question. Many employers run a partial Section 125 plan — usually just for health-insurance pre-tax — and never set up the full Preventive Care variant that creates the post-tax wellness reward. The result: you get a small benefit (the pre-tax health insurance deduction), but you miss the much larger benefit (the structural $72/paycheck raise plus the wellness benefits package).

The reason isn't sinister. Most owners have never heard of the complete Preventive Care variant, and most CPAs aren't in the business of building Section 125 plans — they're in the business of advising on tax structure. To run a complete Preventive Care plan, an employer needs:

• A formal written plan document (drafted by a plan administrator)
• A HIPAA-compliant participatory wellness program
• A licensed indemnity insurance carrier relationship
• Ongoing nondiscrimination testing
• $500K of insurance-backed legal protection (the operator carries this)

That's why most employers haven't set it up — not because they don't want to, but because they don't know about it or don't know who to call.

How to ask your employer to enroll

Use the Paycheck Decoder above to enter your monthly take-home pay. The tool will calculate your projected raise (~$72 per paycheck, ~$863/year) and the benefits package you'd gain (24/7 telemedicine, 400+ free generic medications, dental savings up to 60%, mental health counseling for the whole household).

Then click "Download HR Request Template (PDF)". The one-page PDF has:

• Your specific numbers (current take-home → projected take-home)
• The math (FICA savings + wellness reward structure)
• The compliance citations (HitesmanLaw P.A. May 2025 opinion + CBIZ Advisors LLC August 2025 review)
• A link to the free 15-minute analysis your owner or HR director can book to get the exact employer-side savings figure ($681.60 per W-2 employee per year, net of all fees)

Hand it to your owner, HR director, or office manager. They can take it to their CPA before deciding anything — exactly the process every business owner in our case studies followed before signing.

How big is the impact at the employer level?

For your employer, a complete Preventive Care Section 125 plan delivers:

• $681.60 per W-2 employee per year in net employer FICA tax savings (after the $35/month admin fee)
• A meaningful Workers' Comp reduction (because WC premiums are calculated on taxable payroll, and Section 125 reduces taxable payroll). Real-world reductions in trucking, construction, drayage, and auto-service categories run 30–60%.
• Zero operational disruption — same payroll provider, same insurance carrier, same broker relationship.

A 50-employee company nets $34,080/year in FICA savings + WC reduction. A 100-employee company nets $68,160/year. You can run the calculator at any headcount and industry to see the math.

Real companies, real numbers

This isn't theoretical. Some of the case studies in our public record:

• Black Tiger Transportation (Southern California, 66 W-2 employees, medical transport): saves $140,000/year combined FICA + Workers' Comp. CEO is a CPA who reviewed every IRS code himself before signing.
• Affinity Hospice (multi-state hospice care): saves $140,000+/year. CFO is a CPA who commissioned the CBIZ review before enrolling.
• Golden Living Point Loma (San Diego, 51 W-2 employees, assisted living): saves $120,000/year. Owner is a practicing attorney who reviewed the IRS codes before enrolling.
• A 132-employee Houston restaurant group (69 locations): saves $250,000+/year combined.
• Maaco San Diego: confirmed 50%+ Workers' Comp reduction — owner Peter Capdevielle then referred 26 other Maaco franchisees.

Browse the full case study set →

Compliance: the verification record

The Section 125 Preventive Care program is verified compliant by two independent authorities:

• HitesmanLaw P.A. (May 5, 2025): 8-page legal opinion from Darcy L. Hitesman, J.D. — Super Lawyer-rated ERISA attorney, AV-rated since 1998, co-author of the national ERISA compliance manual. Opinion concludes: "In this firm's opinion, the Program described satisfies applicable IRS requirements."
• CBIZ Advisors LLC (August 22, 2025): top-7 U.S. accounting firm, 135,000+ clients. Independent review concludes the program satisfies the requirements of ERISA, the ACA, and COBRA when operated per its provisions.

Both letters are share-able PDFs your employer can request on their free 15-minute analysis call. Read the full compliance authority page →

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