Does Section 125 Reduce FICA Wages? Yes — Here's How Employers Save

Yes, Section 125 plans reduce FICA wages. When employees make pre-tax deductions through a Section 125 cafeteria plan, those dollars come out before FICA is calculated — so both the employer and the employee skip the 7.65% tax on every pre-tax dollar. Below: how it works, what it looks like on a real paycheck, and a calculator you can point at your own payroll.

What FICA actually is

FICA is the payroll tax that funds Social Security and Medicare. The name comes from the 1935 law — Federal Insurance Contributions Act — but the only part you need to remember is the rate:

• Social Security: 6.2% of wages (up to the annual cap of $168,600 in 2024)
• Medicare: 1.45% of all wages, plus an additional 0.9% Medicare tax on wages over $200,000 for single filers
• Combined employer rate: 7.65% on wages below the Medicare threshold

The key thing most owners miss: both sides pay FICA. The employee's half shows up on the paycheck. The employer's half is a direct line on the payroll bill that nobody at the company ever sees — but it is real cash going out the door on every paycheck, on every dollar.

How Section 125 reduces FICA

When an employee pays for a qualified benefit through a Section 125 plan, that money comes out of gross pay before FICA is calculated. The tax skips those dollars entirely. Result:

• The employee's taxable wages drop by the amount they contributed
• The company's payroll-tax bill drops by 7.65 percent of that same amount
• Neither side pays FICA on the dollars that went into the benefit

This is not a loophole and not aggressive tax planning. Section 125 has been in the tax code since 1978 specifically to allow this treatment. The IRS designed it this way.

The math, on one employee

Take one employee making $60,000, contributing $4,000 a year into pre-tax benefits (health premiums, an FSA, whatever the mix is). Here is the difference.

The Setup:

• One employee earning $60,000/year
• $4,000/year in pre-tax benefit deductions (health insurance premiums, FSA, etc.)
• No Section 125 plan currently in place

Without a Section 125 Plan:

• Employee's FICA-taxable wages: $60,000
• Employee's FICA tax: $60,000 × 7.65% = $4,590
• Employer's FICA tax on this employee: $60,000 × 7.65% = $4,590

With a Section 125 Plan:

• Employee's gross pay: $60,000
• Pre-tax benefit deduction: -$4,000
• Employee's FICA-taxable wages: $56,000
• Employee's FICA tax: $56,000 × 7.65% = $4,284
• Employer's FICA tax on this employee: $56,000 × 7.65% = $4,284

The Savings:

• Employee saves in FICA alone: $306 per year
• Employee also saves income tax (varies by bracket, but typically 22-24%): ~$880 per year
• Total employee benefit: ~$1,186 per year in reduced taxes

For your company:

• Employer FICA savings: $4,000 × 7.65% = $306 per employee per year

This doesn't sound like much on a single employee. But scale it across your organization:

• 25 employees: ~$7,650/year
• 50 employees: ~$15,300/year
• 100 employees: ~$30,600/year
• 250 employees: ~$76,500/year
• 500 employees: ~$153,000/year

These numbers assume average pre-tax elections of $4,000 per employee. Many organizations see higher participation and larger deductions, especially when health insurance is included.

What Benefits Qualify for Pre-Tax Deductions?

Not every benefit generates FICA savings, but many common ones do. Here's what qualifies under Section 125:

• Health insurance premiums: the biggest FICA savings driver for most organizations
• Dental insurance premiums
• Vision insurance premiums
• Health Flexible Spending Accounts (FSAs): up to $3,200/year per employee for medical expenses
• Dependent Care FSAs: up to $5,000/year for childcare and elder care
• Health Savings Account (HSA) contributions when paired with a high-deductible health plan
• Fixed indemnity insurance premiums: supplemental coverage for specific medical events
• Accident and critical illness insurance when structured through the plan

A few benefits do not qualify, or qualify with limitations:

• Life insurance over $50,000: Only the first $50K is treated as tax-free; amounts above are subject to income tax (but not FICA) under IRC Section 79 rules
• Certain transportation benefits: Have specific rules and caps
• Employer-paid disability: Different treatment depending on structure

The key question: are all your eligible benefits currently running through a formal Section 125 plan? Many organizations offer health insurance on a pre-tax basis but miss out on FICA savings from other benefits like FSAs or supplemental coverage.

Savings by Company Size: What You Can Realistically Expect

Below is a table showing estimated FICA savings ranges based on company size and average pre-tax elections. These are illustrative estimates only — your actual savings will depend on your specific payroll structure, benefit elections, and participation rates.

Company Size	Avg. Pre-Tax Elections	Estimated Annual FICA Savings
25 employees	$4,000/employee	$7,650
50 employees	$4,000/employee	$15,300
100 employees	$4,500/employee	$34,425
250 employees	$5,000/employee	$95,625
500 employees	$5,500/employee	$211,425

These are illustrative estimates. Your actual savings depend on salary levels, benefit elections, participation rates, and the specific benefits offered through your Section 125 plan.

Common Misconceptions About FICA Savings

We encounter the same questions repeatedly. Let's clear them up:

"We already offer health insurance on a pre-tax basis, so we must be getting the FICA savings."

Not quite. Offering health insurance is not the same as having a Section 125 plan. The IRS specifically requires a written cafeteria plan document, signed and on file, for pre-tax deductions to actually be compliant. Plenty of companies run pre-tax deductions through payroll without that document — which usually means the savings are real but the compliance foundation is not. Check whether you actually have a signed plan document. If the answer is "I am not sure," the answer is probably no.

"It is too complicated to set up and maintain."

This is the biggest barrier we hear. Yes, Section 125 plans have compliance requirements. That is why Third Party Administrators — companies that handle the paperwork — exist. A good TPA handles the plan document, the annual nondiscrimination testing, the compliance reporting, and the ongoing administration. Your job is to pick which benefits to offer and explain the change to your team. The complexity is manageable, and the savings usually cover the TPA fee many times over.

"Only big companies benefit. At our size, it is not worth the effort."

Not true. A company with 25 employees routinely sees around $7,650 a year in FICA savings. A company with 10 employees sees around $3,060. That is not trivial money for a small business, and it is recurring — it shows up every year, not just once. Employees also value the take-home bump. It is one of the few benefits where the company saves money, the employee keeps more of their paycheck, and nothing has to get more expensive.

One honest trade-off to know about

When pre-tax deductions lower FICA-taxable wages, they also lower the wages that count toward the employee's future Social Security benefit. Social Security looks at the 35 highest-earning years, so shrinking those years by a few thousand dollars can slightly shrink the eventual benefit.

In practice, this is a lopsided trade in the employee's favor. Immediate tax savings (FICA plus income tax) usually run 25 to 35 percent of the amount deducted. The future Social Security hit, if any, is closer to 1 to 2 percent of that same amount, spread across decades. An employee who saves $1,000 today is very unlikely to ever feel it in retirement.

The right move is to mention the trade-off at enrollment so people have the full picture — informed, not alarmed.

How to Get Started with FICA Savings

If you don't currently have a Section 125 plan and want to capture these savings, here are the practical next steps:

1. Evaluate your current benefits setup. Which benefits are you offering? Are they already running through a documented Section 125 plan, or are you handling pre-tax deductions informally?
2. Consult a TPA or benefits administrator. They'll review your current situation, explain your options, and run preliminary savings estimates specific to your payroll.
3. Draft a Section 125 plan document. Your TPA will handle this. It needs to be signed and in place before any pre-tax deductions begin.
4. Communicate to employees. Clear enrollment messaging is critical. Employees need to understand what's changing, how to enroll, and what the tax benefits mean for their take-home pay.
5. Begin pre-tax deductions. Once the plan is live, eligible benefits are automatically treated pre-tax. Your payroll vendor will handle the deduction mechanics.

Next Steps

Ready to estimate your potential FICA savings? Use our FICA Savings Calculator to plug in your company size and average benefit elections. You'll see the specific dollar impact for your organization.

Want a deeper dive into how Section 125 works? Read our Section 125 Comprehensive Guide.

Or if you're ready to explore fixed indemnity plans — a common way to generate additional FICA savings while enhancing your benefits offering — check out Fixed Indemnity Plans: What You Need to Know.