What Is S125 on My W-2? The Section 125 Variants, Decoded

Plain English Benefits · Updated September 11, 2026 · Education, not tax advice

Short answer: S125, Less: Section 125, Cafe 125, and similar codes on your W-2 all refer to the same thing—money deducted from your paycheck before taxes to pay for benefits like health insurance premiums, FSA contributions, or dependent care expenses. It's not income you owe tax on. It's income you already spent on qualified benefits, so the IRS doesn't count it as taxable wages.

The number in that box shows how much you saved in pre-tax dollars through your employer's Section 125 cafeteria plan.

Why your W-2 shows it at all

Your W-2 Box 1 reports your taxable wages—the amount the IRS actually taxes. If you earned $50,000 but contributed $3,000 to an FSA and paid $5,000 in health premiums pre-tax, your Box 1 shows $42,000.

The S125 or Section 125 line isn't a separate box on most W-2s. It typically appears in Box 14, the catchall box where employers report additional information. Box 14 is optional and unregulated—every payroll system labels it differently.

That's why you'll see "S125," "Less: Section 125," "Cafe 125," "125," "Sec 125," or just "Cafeteria Plan" depending on whose software your employer uses.

What all the variants mean

All of these mean the same thing:

• S125 — shorthand for Section 125
• Less: Section 125 — money subtracted from taxable wages via Section 125
• Cafe 125 — casual shorthand for "cafeteria plan," the official IRS term for Section 125
• Section 125 — the actual tax code section that allows pre-tax benefit deductions
• 125 Deduction or 125 Plan — same thing, different label

Some W-2s break it out by benefit type: "125-Health" for premiums, "125-FSA" for flexible spending accounts, "125-DCFSA" for dependent care. Others lump it all together as one number.

If your employer's payroll system shows it in Box 14, it's for your records. The IRS doesn't require it. Box 1 already reflects the deduction—that's the number that matters for your tax return.

What counts as Section 125 on your W-2

Section 125 covers any benefit deducted from your pay before federal income tax and payroll taxes. The most common ones are:

• Health insurance premiums (medical, dental, vision)
• Health FSA contributions
• Dependent Care FSA contributions
• HSA contributions (these also show separately in Box 12 with code W)

Some employers include commuter benefits or group term life insurance over $50,000 in the Section 125 total if those benefits run through the cafeteria plan. Others don't.

If you want the breakdown, check your final December paystub. It usually lists each deduction separately. The W-2 just shows the lump sum.

What it means for your taxes

You don't report the S125 amount anywhere on your tax return. The IRS already knows about it—it's why your Box 1 wages are lower than your gross pay.

Pre-tax means you didn't pay federal income tax or payroll taxes on that money. You spent it on qualified benefits instead, and the tax code allows that trade.

The deduction happened during the year through payroll. By the time you file, it's done. You're not claiming it as a deduction on Schedule A or Form 1040. It already reduced your taxable income.

One clarification: HSA contributions that appear in Box 12 with code W are also pre-tax, but they work slightly differently. You can deduct those on your return if you contributed through payroll and your employer didn't already exclude them from Box 1. Most do. If you're unsure, a tax preparer can check. We covered HSAs in detail if you want to understand how they differ from FSAs.

When the number looks wrong

If the S125 figure seems too high or too low, compare it to your final paystub. Add up every pre-tax deduction you made all year—health premiums, FSA contributions, dependent care, HSA if it's included.

Common mismatches:

• The number is higher than you expected. Your employer might be including benefits you forgot about, like dental premiums or a mid-year FSA enrollment.
• The number is lower than your contributions. Some employers only report certain benefits in Box 14, or they break out HSA separately and don't include it in the Section 125 line.
• It's not there at all. Box 14 is optional. If your Box 1 is lower than your gross pay, the deduction already happened. The label is just for your reference.

If the number is outright wrong—say, it shows $8,000 but you contributed $2,000—ask your payroll department. W-2 errors happen, and you want them corrected before you file.

How S125 fits into the bigger cafeteria plan picture

Section 125 is the IRS code section that allows employers to offer pre-tax benefit elections. The cafeteria plan is the formal arrangement your employer sets up to administer those elections.

Some cafeteria plans are simple—just health insurance premiums deducted pre-tax. That's called a Premium Only Plan, or POP. Others include FSAs, dependent care accounts, and HSA contributions. The more complex the plan, the more detailed your Box 14 breakdown might be.

If you're seeing the S125 code because your employer runs a POP, we wrote a full explainer on Premium Only Plans that covers what they are and when they make sense for small employers.

For employees, the practical takeaway is this: the S125 amount on your W-2 is money you elected to spend on benefits before the IRS taxed it. You made that election during open enrollment, and payroll deducted it over the year. The W-2 is just the receipt.

FAQ

Is S125 the same as Cafe 125?

Yes. S125, Cafe 125, Section 125, and Less: Section 125 all refer to the same IRS tax code section. Cafeteria plan is the official term. The labels vary by payroll software, but the meaning is identical. We covered the "Cafe 125" variant specifically in another article if you're seeing that one.

Do I owe tax on the S125 amount?

No. The S125 line shows money you already spent on benefits before taxes. It's not added to your taxable income. Your Box 1 wages already reflect the reduction. You don't report it separately when you file.

Why isn't Section 125 in the same box on everyone's W-2?

Box 14 is unregulated. The IRS doesn't require employers to report Section 125 deductions there, and it doesn't specify a format when they do. Some employers include it for recordkeeping. Others skip it entirely. As long as Box 1 is correct, the label in Box 14 is optional.

Can I deduct the S125 amount on my tax return?

No. Pre-tax deductions already reduced your taxable wages during the year. You don't deduct them again. That would be double-dipping. The tax benefit happened through payroll, not at filing time.

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Want to understand how the whole Section 125 system works? The full cafeteria plan explainer walks through what employers set up, what employees can elect, and why the IRS calls it a cafeteria plan in the first place. If you're the one running the plan instead of just using it, the Section 125 setup guide covers the plan document, payroll setup, and the compliance traps that catch almost everyone.