The ACA employer mandate: who it applies to and what it requires
The ACA employer mandate applies to employers with 50 or more full-time employees, counting equivalents. Those employers must offer affordable coverage or risk a penalty. Here is how to tell if the mandate applies to you.
Who the ACA employer mandate applies to
The mandate applies to applicable large employers, or ALEs. You are an ALE for this year if you averaged 50 or more full-time employees, including full-time equivalents, during the prior calendar year.
- Full-time employee: someone who averages at least 30 hours a week, or 130 hours a month.
- Full-time equivalents: add up the monthly hours of part-time employees and divide by 120.
Count each month, add the twelve monthly totals and divide by 12. Related companies with common ownership are often counted together, so check with your tax adviser if you own more than one business.
What ALEs must offer
To avoid a penalty, an ALE must offer coverage to at least 95% of full-time employees and their children up to age 26. That coverage must:
- Meet minimum value, meaning the plan pays at least 60% of covered costs on average.
- Be affordable, meaning the employee's cost for the lowest self-only option stays under a set share of income.
The affordability limit is 9.96% of household income for 2026 plan years and 10.22% for 2027. Because employers rarely know household income, the IRS allows safe harbors based on W-2 wages, an employee's rate of pay or the federal poverty line.
How penalties work
Penalties start only when at least one full-time employee buys a marketplace plan and receives a premium tax credit. There are two kinds:
- No offer to 95%. If you do not offer coverage to enough full-time employees, the 2026 penalty is $3,340 per year for each full-time employee, minus the first 30.
- Offer is not affordable or lacks minimum value. The 2026 penalty is $5,010 per year, but only for each full-time employee who receives a premium tax credit.
Sources: IRS Revenue Procedure 2025-26 for 2026 penalty amounts; Revenue Procedure 2026-26 for the 2027 affordability percentage, as reported by IFEBP and EY Tax News.
Growing past 50 employees
If your headcount is climbing toward 50, plan a year ahead. Your status for next year depends on this year's average. Start tracking hours monthly, decide how you will measure variable-hour staff and price a plan before the mandate applies.
You also move out of the small group market once you pass 50 employees in most states, or 100 in California, Colorado, New York and Vermont. Large group plans are priced differently, often on your own claims history.
Ways to meet the mandate
- A fully insured group plan with an affordable employee share
- A level-funded plan
- An affordable ICHRA
We can price each option and check the employee cost against the affordability safe harbors before you commit.
This guide explains federal rules in plain terms. It is not tax or legal advice. Confirm your ALE status and safe harbor choice with your tax adviser.
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Common questions
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We have 45 full-time employees and some part-timers. Are we an ALE?
Maybe. Add your part-time hours to the count as full-time equivalents. If full-time employees plus equivalents averaged 50 or more over the prior calendar year, you are an applicable large employer this year.
Do I owe a penalty if I am under 50?
No. The employer mandate only applies to applicable large employers. Smaller businesses can offer coverage or not, with no federal penalty either way.
Does an ICHRA count as an offer of coverage?
Yes. An ICHRA that is affordable under IRS rules counts toward the mandate the same way a group plan does.
What forms does an ALE file?
ALEs file Form 1094-C with the IRS and give each full-time employee a Form 1095-C describing the coverage offered. Most payroll providers and carriers can help prepare them.
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