What Is A Section 125 Premium Only Plan?

A single translucent glass lever on a dark plinth with one glowing golden path and one dim grey path diverging beneath it, the one choice a premium only plan offers

Quick Answer

A premium only plan, or POP, is the simplest form of Section 125 cafeteria plan. It offers a single choice between taxable cash wages and paying the employee share of health premiums on a pre-tax basis, with no flexible spending account or other qualified benefits attached.

A premium only plan is a cafeteria plan stripped down to one decision. The employee chooses between receiving wages as taxable cash or using part of those wages to pay their share of health insurance premiums before tax is calculated. Nothing else is offered through it, which is precisely why employers choose it: a full flexible benefit plan carries flexible spending accounts, election change complexity and heavier annual testing, while a premium only plan carries a nondiscrimination safe harbor and very little administration. It is the most common Section 125 arrangement in small businesses and the one most often run without the written document that makes it valid.

A premium only plan is the least complicated thing in employee benefits that produces a real tax result, which is exactly why it gets overlooked. There is nothing to shop and nothing to compare, so nobody sells it hard.

What is a premium only plan?

A Section 125 cafeteria plan reduced to a single choice. The employee elects either to take wages as taxable cash, or to apply part of those wages toward their share of health insurance premiums before tax is calculated.

That is the entire menu. No health flexible spending account, no dependent care account, no menu of credits to allocate. One benefit, one election, one plan year.

The simplicity is the point. A full flexible benefit plan brings contribution limits, substantiation requirements, election change administration and heavier nondiscrimination testing. A premium only plan brings a plan document, a payroll configuration, and very little else.

What does it accomplish?

Two things at once, and the second is the one most employers have never had explained.

The employee pays their premium share with pre-tax dollars, which lowers their taxable income and their own Social Security and Medicare withholding. And because the salary reduction is excluded from the statutory definition of wages rather than merely exempt from the employee’s tax, the employer’s own payroll tax falls by the same measure. That mechanism, and what it is worth at current rates, is in do pre-tax premiums lower employer payroll taxes.

There is no application, no approval and nothing filed with the IRS to obtain it. What is required is that a valid plan exist. Current employer payroll tax rates and the annual Social Security wage base are published in IRS Publication 15^[1].

What a POP does not do

It does not change the insurance, the carrier, the network or the premium. A premium only plan is a tax wrapper around a payroll deduction, not a coverage decision, and an employer whose underlying problem is that renewal came back 22 percent higher has not solved that problem by adopting one.

It also does not help an employer whose only person on payroll is an excluded owner, which is a common Nevada business shape and is covered in can an S corp owner participate in a Section 125 plan.

Why do employers choose a POP over a full plan?

Because of the testing relief and the administration, in that order. A cafeteria plan must not discriminate in favor of highly compensated individuals or key employees, and the testing that proves it is an annual exercise.

The proposed cafeteria plan regulations create a safe harbor for premium only plans that meet certain requirements, implementing the safe harbor in section 125(g)(2). For a plan whose only benefit is premium salary reduction, that safe harbor substantially reduces the annual testing burden compared with a full flexible benefit plan.

There is a separate route for small employers as well. IRS Publication 15-B^[2] describes the simple cafeteria plan, available to an eligible employer with generally no more than 100 employees, which provides a safe harbor from nondiscrimination testing in exchange for employer contributions of either a uniform percentage of at least 2 percent of compensation, or the lesser of 6 percent of compensation or twice each qualified employee’s salary reduction contribution.

Worth one caveat on authority. The detailed 2007 cafeteria plan regulations remain proposed rather than final, and taxpayers generally rely on them. That is a reason to have a professional draft the plan document, not a reason to treat the requirements as optional.

Is there a limit on how much goes through it?

Not a statutory dollar cap on premium salary reductions, which surprises people who have heard about flexible spending account limits.

The health flexible spending account limit, $3,400 for plan years beginning in 2026, applies to health FSAs. A pure premium only plan has no FSA, so that figure does not cap it. What caps a premium only plan in practice is the premium itself, since the plan only handles the employee’s share of it.

Elections do lock, though. An election under a Section 125 plan is generally irrevocable for the plan year, because the tax treatment depends on the employee never having access to the cash. Mid-year changes are permitted only in defined circumstances tied to a change in status, with the plan document governing which ones apply. The qualifying event mechanics are in what is a qualifying life event.

What should an employer check?

Whether a plan document exists at all, and when it was adopted. Payroll software offering a pre-tax deduction checkbox is not a plan document, and this is the single most common defect in small employer setups.

A document adopted for a plan year that has since rolled over needs attention before the new year begins rather than after, since retroactive adoption is not available. The consequences of getting that wrong are in does a Section 125 plan need a written document, and the whole mechanism is laid out in how a Section 125 plan cuts employer payroll tax. Employers weighing the wider picture will find it in the small business benefits playbook.

We are insurance nerds, not tax professionals. Whether a specific arrangement qualifies, and what its plan document should say, belongs with a licensed tax professional and a qualified benefits attorney or administrator.

As an official Paychex partner, ProtectHealth can map the plan document, the payroll configuration and the benefits strategy in one conversation. Owners who want that for their own business can book a conversation.

Sources

Internal Revenue Service — IRS Publication 15
Internal Revenue Service — Publication 15-B

Frequently Asked Questions

What does POP stand for?

Premium only plan. It refers to a Section 125 cafeteria plan whose only qualified benefit is the payment of the employee share of insurance premiums on a pre-tax basis, with no health flexible spending account, dependent care assistance or other benefit offered through the plan.

How is a POP different from a full cafeteria plan?

A full cafeteria plan can offer multiple qualified benefits including health and dependent care flexible spending accounts, which brings election complexity, contribution limits and more extensive nondiscrimination testing. A premium only plan offers a single choice and qualifies for a nondiscrimination safe harbor that substantially reduces the testing burden.

Is there a contribution limit on a POP?

There is no statutory dollar cap on premium salary reductions in a premium only plan. The health flexible spending account limit, which is $3,400 for plan years beginning in 2026, applies to health FSAs rather than to premium salary reductions, so it does not cap a pure POP.

Does a POP still need a written document?

Yes. Every Section 125 plan must be a separate written plan adopted and effective on or before the first day of the plan year. There is no simplified exception for a premium only plan, and without a valid document the arrangement is not a cafeteria plan at all.

Can employees change their election mid-year?

Generally no. An election under a Section 125 plan is locked for the plan year, and mid-year changes are permitted only in defined circumstances tied to a change in status, with the plan document governing which ones that plan recognizes.

Want an answer specific to your situation?

General answers only go so far. A free 20-minute ProtectHealth strategy conversation maps what actually fits.

Book A Conversation

ProtectHealth brokers are insurance professionals, not tax professionals. Eligibility for any coverage or tax-advantaged structure depends on business structure, income, and household situation.