A Section 125 plan saves employers 7.65% in FICA taxes on every dollar employees contribute pre-tax toward benefits. At typical participation rates, a 10-employee company saves roughly $2,754 per year, a 50-employee company saves $13,770, a 100-employee company saves $27,540, and a 250-employee company saves over $114,750 annually. These savings scale linearly with company size, and most plans pay for themselves many times over after administration costs.
If your company offers health insurance, dental, or vision coverage, you have a legal way to reduce taxes that many employers overlook entirely. Section 125 cafeteria plans (sometimes called “flex plans”) let employees pay for their benefits with pre-tax dollars. But here’s what most people don’t realize: this saves both the employer and the employee money on FICA taxes. We’re talking real, substantial dollars—even for small companies.
Let’s walk through the numbers.
The Math: Why Pre-Tax Benefits Save Everyone Money
Here’s the core principle: when an employee pays for health insurance with pre-tax dollars, those premium payments don’t count as taxable wages. This means they’re not subject to income tax or FICA taxes.
FICA, for context, includes:
- Social Security tax (6.2% employee contribution, 6.2% employer match)
- Medicare tax (1.45% employee contribution, 1.45% employer match)
- Total: 7.65% on each side
So when a $500-per-month health insurance premium gets paid pre-tax through a Section 125 plan, both the employer and the employee avoid paying FICA on that $500. That’s $38.25 in combined FICA taxes (15.3% × $500) that simply disappears—legally.
The employer saves 7.65% of every dollar in pre-tax benefit contributions. The employee saves 7.65% too, plus their income tax rate on top of that. It’s a rare tax benefit that genuinely helps both sides.
Real Dollar Examples: Five Company Sizes
Let’s make this concrete with five scenarios. We’ll use consistent assumptions: an average health insurance premium of $500/month per participating employee, a 60% participation rate (a realistic middle ground), and the 2026 FICA rate of 7.65%.
10-Employee Company
Setup:
- 10 employees total
- 6 participating in the plan (60%)
- $500/month per employee = $6,000/year per person
- Total annual premiums: 6 employees × $6,000 = $36,000
Employer FICA Savings: $36,000 × 7.65% = $2,754/year
Employee FICA Savings (combined, all 6 participants): $36,000 × 7.65% = $2,754/year
Income Tax Savings (employees only, estimated 22% bracket): $36,000 × 22% = $7,920/year
Total Combined Savings: $2,754 (employer FICA) + $2,754 (employee FICA) + $7,920 (employee income tax) = $13,428/year
For a 10-person company, this is significant. And as you’ll see, it scales.
25-Employee Company
Setup:
- 25 employees total
- 15 participating (60%)
- $500/month per employee
- Total annual premiums: $90,000
Employer FICA Savings: $90,000 × 7.65% = $6,885/year
Employee FICA Savings: $90,000 × 7.65% = $6,885/year
Employee Income Tax Savings (22% bracket): $90,000 × 22% = $19,800/year
Total Combined Savings: $33,570/year
Notice the linear scaling: you’ve tripled the company size, and the savings have roughly tripled.
50-Employee Company
Setup:
- 50 employees total
- 30 participating (60%)
- Total annual premiums: $180,000
Employer FICA Savings: $180,000 × 7.65% = $13,770/year
Employee FICA Savings: $180,000 × 7.65% = $13,770/year
Employee Income Tax Savings: $180,000 × 22% = $39,600/year
Total Combined Savings: $67,140/year
At this size, you’re looking at an annual benefit approaching $70,000. Most TPAs (third-party administrators) cost $1,000–$1,500/year at this scale, so your net savings is still enormous.
100-Employee Company
Setup:
- 100 employees total
- 60 participating (60%)
- Total annual premiums: $360,000
Employer FICA Savings: $360,000 × 7.65% = $27,540/year
Employee FICA Savings: $360,000 × 7.65% = $27,540/year
Employee Income Tax Savings: $360,000 × 22% = $79,200/year
Total Combined Savings: $134,280/year
For a mid-sized company, this is a six-figure annual benefit. Yet many companies at this size still don’t have a formal Section 125 plan.
250-Employee Company
Setup:
- 250 employees total
- 150 participating (60%)
- Total annual premiums: $900,000
Employer FICA Savings: $900,000 × 7.65% = $68,850/year
Employee FICA Savings: $900,000 × 7.65% = $68,850/year
Employee Income Tax Savings: $900,000 × 22% = $198,000/year
Total Combined Savings: $335,700/year
For enterprise-level companies, Section 125 becomes a material line item in the annual budget.
What Affects Your Actual Savings?
These examples use assumptions, and your actual numbers will vary. Here are the key variables:
Participation Rate: We used 60%, but this can range from 30% (in companies where benefits are optional or where employees can’t afford them) to 80%+ (in highly competitive industries where benefits are a strong recruiting tool). Higher participation = higher savings.
Premium Amounts: We modeled $500/month, but this varies wildly. A family health plan can run $1,200–$1,800/month. Dental and vision are smaller, typically $25–$50/month. Higher premiums = higher savings.
Wage Levels: The Social Security wage base cap is important here. For 2026, it’s expected to be approximately $171,000–$176,000 (it was $168,600 in 2025 and typically rises 2–3% annually). Once an employee hits this cap, additional wages aren’t subject to Social Security tax (6.2%), but Medicare tax (1.45%) has no limit. This means employees earning well above the cap still save 1.45% on FICA, but not 7.65%.
Income Tax Bracket: Employee income tax savings depend on the marginal rate. We used 22%, but this ranges from 12% (for lower earners) to 35% or higher (for top earners). This doesn’t affect the employer FICA savings, but it does affect total household savings.
The Hidden Savings: FUTA, State Unemployment, and Workers’ Comp
Most employers think of Section 125 savings as FICA only. But there are additional (smaller) benefits:
Federal Unemployment Tax (FUTA): Employers pay 0.6% FUTA on wages up to $7,000 per employee. If an employee’s wages are reduced by pre-tax benefit contributions, FUTA exposure is reduced proportionally. This is small—typically $30–$50 per employee per year—but it’s real.
State Unemployment Insurance (SUI): Varies by state, but typically 0.5%–5%. Pre-tax benefit contributions reduce the wage base for SUI calculation, saving employers a portion of their SUI taxes. In high-rate states, this can be material.
Workers’ Compensation: In some states, workers’ comp premiums are calculated on total payroll. Reducing taxable wages through Section 125 can reduce workers’ comp premiums slightly. This varies enormously by state and industry.
Combined, these hidden benefits add 1–2% additional savings on top of the FICA number. Not huge, but worth mentioning.
The Cost: TPA Fees and Implementation
Section 125 plans require a third-party administrator (TPA) to administer the plan, handle payroll deductions, prepare annual notices, and manage IRS compliance.
Typical costs:
- Small companies (10–25 employees): $500–$1,000/year
- Mid-sized (50–100): $1,000–$1,500/year
- Large (250+): $2,000–$5,000/year
These are rough ranges; actual costs depend on the TPA, the complexity of your plan, and whether you bundle it with other services.
ROI: Why the Cost Is Irrelevant
Let’s look at ROI for a 10-employee company, the smallest scenario above.
- Employer FICA savings: $2,754/year
- TPA cost: $1,000/year
- Net benefit: $1,754/year
ROI: 175% in year one. Even if you paid the full $1,000 for administration, you’d still net $1,754 in employer savings alone—before employee income tax savings, which go to employees but represent real household financial benefit.
For a 50-employee company:
- Employer FICA savings: $13,770/year
- TPA cost: $1,200/year
- Net benefit: $12,570/year
ROI: 1,047%. At this scale, the cost is a rounding error.
What Employees Save Too
We’ve focused on employer FICA, but employees win substantially:
- FICA savings: 7.65% of pre-tax benefit contributions
- Income tax savings: 12–35%+ depending on bracket
- Combined employee tax savings: 20–40% of benefits paid
For an employee contributing $500/month to health insurance, that’s $60–$200/month in personal tax savings. Over a career, this adds up.
Many employees don’t fully appreciate this. It shows up as a slight increase in take-home pay (because their W-2 shows lower wages), but it’s real money.
Why Isn’t Everyone Doing This?
Given the math, it’s surprising how many employers—especially small and mid-sized companies—don’t have a Section 125 plan. Why? Check out FICA Savings by Company Size to see more detailed analysis for different business sizes.
Awareness gap: Many business owners and HR managers don’t fully understand Section 125. They think of it as a way to let employees save on taxes, but miss the employer-side benefit.
Perceived complexity: Section 125 has compliance requirements. There are anti-discrimination rules, testing requirements, and annual notices. These are manageable, but they create perceived friction.
“We’re too small”: Owners of 10- or 15-person companies often assume Section 125 is only for larger employers. It’s not. Even very small companies benefit.
Inertia: If a plan hasn’t been in place, there’s a small setup burden. Many companies delay because it feels like “one more thing.”
Bad implementation before: Some companies had poor Section 125 experiences in the past—complicated administration or employee confusion—and didn’t revisit it.
The irony: the companies that think they’re “too small” to benefit are often the ones where the savings have the highest impact relative to company size.
The Bottom Line
A Section 125 cafeteria plan isn’t exotic. It’s not a benefits fad. It’s a straightforward, legal way to reduce taxes for both your company and your employees. Real-world results are documented in our 50-Employee Case Study.
- A 10-person company: saves nearly $3,000/year in employer FICA alone
- A 50-person company: saves nearly $14,000/year in employer FICA
- A 250-person company: saves nearly $70,000/year in employer FICA
Employees save income tax on top of that. The cost is low—typically $500–$2,000/year—and the ROI is exceptional.
If you offer health, dental, or vision benefits and don’t have a Section 125 plan, you’re leaving money on the table. Not huge money for a 5-person company, but material money for anyone else.
Ready to See Your Numbers?
Want to know what Section 125 could save your company? Our FICA savings calculator lets you plug in your company size, actual benefit premiums, and participation rates to see your real savings potential. No guessing required.
