Quantum 125 · Payroll Tax
How a Section 125 Plan Lowers Payroll Tax, Going Forward (and What the IRS Memo Means)
A Section 125 plan takes health benefits out of pay before tax, so the employer’s 7.65% payroll tax falls too, from the plan’s start date forward. Here is how it works, Quantum’s Plan 1500 illustration, and the 2023 IRS memo every employer should put in front of its CPA first.
The short answer
A Section 125 cafeteria plan lets employees pay for eligible benefits from wages before income tax and FICA are withheld. Taxable wages fall, so the employer’s 7.65% payroll-tax share falls with them, from the plan’s start date forward. It is not a refund of taxes already paid, and whether a supplemental plan’s monthly wellness benefit is tax-free is contested by the IRS, so the plan documents go to your CPA before you sign.
What is a Section 125 cafeteria plan?
Section 125 of the Internal Revenue Code has been on the books since 1978. It allows an employer to let employees choose between cash wages and certain qualified benefits, and to pay for those benefits with pre-tax dollars. The most common example is paying health-insurance premiums through payroll before tax. Large employers have done this for decades, usually through a PEO or a national benefits broker.
Because the premium comes out before tax, the employee’s taxable wages are lower. Federal income tax, Social Security and Medicare withholding all fall. And because the employer’s share of FICA (6.2% Social Security plus 1.45% Medicare, 7.65% in total under IRC §3111) is calculated on the same taxable wages, the employer’s payroll tax falls too.
Why does the employer’s payroll tax fall, and by how much?
The arithmetic is simple. Multiply the pre-tax premium by 7.65%. Here is the illustration Quantum Health Benefits publishes for its Plan 1500 tier, reproduced as Quantum states it:
| Line | Per month | Per year |
|---|---|---|
| Pre-tax premium deduction | $1,500.00 | $18,000 |
| × 7.65% employer FICA saved | $114.75 | $1,377 |
| Employer keeps | $79.75 | $957 |
Across 100 enrolled employees that is $95,700 a year in Quantum’s illustration. Real teams mix tiers and participation, so a real team’s figure can be lower. These are Quantum’s representations, not a quote and not a forecast for any particular company. A payroll analysis on your own register projects your number.
Is this a refund of payroll taxes we already paid?
No, and this is the point most often misunderstood. A Section 125 plan changes what happens from its start date forward. Every pay period before the plan starts is taxed at the full 7.65%, and nothing about that is recovered later. Some marketing calls this “recapturing” payroll tax. The accurate description is lowering payroll tax, going forward. If someone tells you a plan will get back FICA you have already paid, ask them to show you where in the code that happens.
What does the IRS memo (CCA 202323006) say?
Paying insurance premiums pre-tax under Section 125 is settled law. What is not settled is the monthly wellness benefit that some supplemental fixed-indemnity plans pay when an employee completes an activity. In 2023 the IRS Chief Counsel’s office issued Chief Counsel Advice 202323006, concluding that fixed wellness payments under a similar insured plan are taxable wages unless they reimburse medical expenses the employee actually paid. A September 2026 Morgan Lewis report says the IRS has begun auditing employers that adopted plans of this kind.
If the memo’s treatment applies to a plan, the employee take-home and employer savings in the illustration would shrink or disappear. That is why the plan document, the policy and the sponsor’s written answer on how payments are reported go to your CPA or tax counsel before anyone enrolls. If they are not comfortable, you do not sign.
Plan sponsors such as Quantum take the position that their plans pay bona fide insurance claims and are structured differently from the arrangement in the memo. We do not take a side on that question. Your CPA does.
Who fits, and who does not
- Fits: employers with W-2 staff, hourly or salaried, on a regular payroll, especially 50 to 249 employees in an income-tax state, with a renewal 90 to 120 days out.
- Does not fit: 1099 workforces; owners trying to enroll themselves as sole proprietors, partners or more-than-2% S-corp owners; teams that are mostly tipped or in states with no income tax, where fewer employees see a gain.
- Side effects to know: lower taxable wages reduce the earnings reported to Social Security and anything tied to reported pay, such as a loan application. Supplemental fixed-indemnity coverage is not major medical and does not replace it.
What to ask your CPA before you sign
- How will the monthly wellness benefit be reported on our W-2s, and is that consistent with CCA 202323006?
- Does the plan document meet Section 125 requirements, and is it adopted before our plan year starts?
- Which of our employees actually benefit after the premium and their own tax picture?
- What happens to the illustrated savings if the IRS position prevails?
Go deeper: how Longtable approaches Quantum 125 · Payroll Tax.
Illustrative examples. Confirm the specifics for your situation with your own CPA or attorney.