Are Your Payroll Expenses Too High? How Section 125 Cuts FICA by 7.65%

The Hidden Payroll Cost

Every employer in America pays 7.65% in FICA taxes on employee wages — 6.2% for Social Security and 1.45% for Medicare. On a payroll of $2 million, that's $153,000 per year in employer-side payroll taxes alone.

Most business owners and CFOs accept this as a fixed cost. But it doesn't have to be. The IRS has provided a mechanism — Section 125 of the Internal Revenue Code — that legally reduces the wages subject to FICA. The result: lower payroll taxes with no reduction in employee compensation.

How the Savings Work

When employees contribute to benefits through a Section 125 cafeteria plan, those contributions are deducted from gross pay before FICA is calculated. This reduces the taxable wage base for both the employer and the employee.

The math is straightforward. For every $1,000 an employee contributes to pre-tax benefits, the employer saves $76.50 in FICA (7.65% × $1,000). Multiply by headcount and contribution levels, and the numbers add up quickly:

• 25 employees × $3,000 avg contribution = $75,000 in pre-tax deductions → $5,737 employer savings
• 50 employees × $4,000 avg contribution = $200,000 in pre-tax deductions → $15,300 employer savings
• 100 employees × $4,500 avg contribution = $450,000 in pre-tax deductions → $34,425 employer savings

What Qualifies as Pre-Tax

Under Section 125, the following benefit contributions can be deducted pre-tax:

• Health insurance premiums (medical, dental, vision)
• Health FSA contributions (up to $3,400 in 2026)
• Dependent Care FSA contributions (up to $7,500/year)
• HSA contributions (when paired with a high-deductible health plan)
• Certain supplemental insurance premiums (accident, disability, critical illness)

If your employees are already paying for any of these benefits with after-tax dollars, switching to pre-tax deductions generates savings immediately — without changing the benefits themselves.

For CFOs: The ROI Case

Section 125 is one of the rare cases where a compliance structure actually pays for itself. The setup cost is typically a one-time plan document fee plus minimal ongoing administration. Meanwhile, the FICA savings recur every pay period for as long as the plan is active.

The savings side is the easy part to verify: 7.65% in employer FICA on every dollar an employee runs pre-tax (IRC Section 3111). The cost side, a one-time plan document plus ongoing administration, depends on your company size and which benefits you include, so a licensed professional prices it for your situation. Compare the two to see your own payback.