ACA compliance for security guard companies

A guard is scheduled for 28 hours. A site loses coverage in March, she picks up doubles for six weeks, nobody flags it, and ACA compliance turns into an IRS letter with a number on it that never went into anyone's budget.

Are you an Applicable Large Employer?

The employer mandate only bites if you are an ALE. The IRS test: at least 50 full-time employees, counting full-time equivalents, on average during the prior calendar year.

The count works in two parts. Anyone averaging 30 hours of service a week, or 130 hours in a calendar month, counts as one. For everyone else, you total their hours of service for the month, capped at 120 hours per person, then divide by 120. Add the two together, average across the twelve months, and you have your answer for the current year.

Security companies sit badly on this line for two reasons. Half the roster hovers around the threshold by design. And the headcount moves with the contract book, so winning one 24/7 site can push you over 50 and you will not notice until you run the numbers in January.

Which guards count as full-time?

For a guard on a fixed post with a fixed schedule this is arithmetic. For a variable-hour guard who works whatever shifts come up, it is not, and the ACA gives you a method for exactly that case.

The look-back measurement method runs in three stages:

1. Measurement period. You track hours of service over a defined stretch of consecutive months that you choose in advance.
2. Administrative period. A window to run the numbers and enroll anyone who qualified. It may last up to 90 days.
3. Stability period. Status locks. It must be at least six consecutive calendar months and no shorter than the measurement period it follows.

The lock is the part operators get wrong. A guard who averaged 32 hours across the measurement period is full-time for the whole stability period even if her hours fall to 20 the week after it starts. Run the other way and it protects you: a guard who averaged 28 stays part-time for that stability period even if she picks up every open shift going.

Which means the measurement period is where the decision actually gets made, and it is made by the schedule. If you want to know who is drifting toward the threshold, you need it visible while the schedule is still editable. That is a scheduling and overtime problem before it is a benefits problem.

What counts as an offer that satisfies the mandate?

Two tests, and the coverage has to pass both.

Minimum value. The plan has to cover at least 60 percent of the total allowed cost of benefits. Most real group plans clear this. Bare-bones products sold as ACA workarounds sometimes do not, and the broker who sold it to you is not the one who pays the penalty.

Affordability. The employee's required contribution for the lowest-cost self-only minimum-value option cannot exceed the applicable percentage of household income. For plan years beginning in 2026 that percentage is 9.96 percent, set by Rev. Proc. 2025-25.

You do not know anyone's household income, so the IRS gives you three affordability safe harbors built on figures you do have: Form W-2 Box 1 wages, rate of pay, and the federal poverty line for a single individual. You can apply different safe harbors to different reasonable categories of employee. Landing inside one protects you even if the coverage turns out to be unaffordable against the employee's real household income.

What do the penalties actually cost?

There are two, they are triggered by different failures, and only one of them is priced off your whole roster.

The 4980H(a) payment hits when you fail to offer minimum essential coverage to at least 95 percent of your full-time employees and at least one of them takes a premium tax credit on the marketplace. For 2026 it is $3,340 per full-time employee, excluding the first 30 from the count, whether or not they got a subsidy. On a 100-guard roster that is 70 employees in the calculation.

The 4980H(b) payment hits when you did offer coverage but it failed affordability or minimum value, and an employee went to the marketplace and got a subsidy. For 2026 it is $5,010, and it is charged only for the employees who actually got the credit.

Higher per head, far smaller head count. Which is why offering something imperfect beats offering nothing, and why the 95 percent line is the one to defend first.

What has to be filed, and when?

Every ALE files two forms. Form 1094-C is the transmittal for the company. Form 1095-C is the per-employee statement showing what was offered, the employee's share of the lowest-cost self-only premium, and which months were covered.

For the 2025 calendar year, the IRS instructions set the deadlines as follows.

Two details worth knowing. Ten or more information returns of any kind in the year and you must file electronically, which for a company with 50 full-time employees means you are always in scope. And there is an alternative to mailing every statement: post a clear and conspicuous notice on your website inviting employees to request theirs, then supply it within 30 days of the request or by January 31, whichever is later.

What compliance looks like on a real schedule board

All of the above resolves down to one operational requirement. You have to know, while the schedule is still editable, who is trending toward 30 hours.

Two things reduce the population you are managing. Stable schedules make the measurement result predictable months out, which is the same discipline that keeps overtime off the books. And a benefit design people actually want turns a compliance cost into a retention tool, which is worth doing deliberately rather than by accident. There is more on that trade in what a guard benefits package should contain.