Ensuring your healthcare benefits plan is compliant with the Affordable Care Act (ACA) is a key responsibility for employers. The ACA's set of rules, covering eligibility, affordability, reporting, and essential health benefits, makes getting it wrong costly. For HR and benefits leaders, compliance is more than penalty avoidance. A compliant plan protects your organization and shows employees you've got their backs with the quality, affordable coverage the law promises.
ACA compliance starts with the Employer Shared Responsibility provisions (the "employer mandate"). Applicable large employers (ALEs), usually those with 50 or more full-time equivalent employees, must offer minimum essential coverage that's affordable and provides minimum value to full-time staff. Mess it up and you could face penalties under IRS Code Sections 4980H(a) and (b). The 4980H(a) penalty applies when you fail to offer coverage to 95% of full-time employees and their dependents; the 4980H(b) penalty applies when the coverage you offered is not affordable or does not provide minimum value and an employee takes a subsidized Marketplace plan. For 2026, those amounts are $3,340 per full-time employee (after subtracting the first 30) and $5,010 per employee who received a subsidy. But compliance doesn't stop there. It also includes detailed reporting, plan design rules, and clear communication with your team.
Your ACA Compliance Checklist
Work through these items each year before you file, and you catch problems before they turn into penalties.
- Determine your ALE status every year. Calculate your full-time and full-time equivalent employees each calendar year. This determines your obligations for the next year.
- Offer coverage to all full-time employees. The ACA says full-time is 30+ hours per week. You need to offer coverage to at least 95% of full-time employees and their dependent children up to age 26 to avoid the "a" penalty.
- Make sure coverage meets affordability and minimum value.
- Affordability: The employee's contribution for the lowest-cost self-only option can't exceed 9.96% of household income for 2026 plan years, up from 9.02% in 2025. The IRS adjusts this percentage each year. Most employers use one of three safe harbors: W-2, Rate of Pay, or Federal Poverty Line.
- Minimum value: The plan must pay at least 60% of the total allowed cost of benefits. Your insurer or a plan actuary can provide a certification.
- File your IRS forms 1094-C and 1095-C accurately. This annual reporting is how the IRS tracks compliance. Give Form 1095-C to each full-time employee and file everything with the IRS. Errors or late filings mean steep penalties.
- Follow market reform rules. Cover preventive services without cost-sharing, remove annual/lifetime dollar limits on essential health benefits, and let young adults stay on a parent's plan until age 26.
- Give employees the notices they're entitled to. That includes a Summary of Benefits and Coverage, a statement of grandfathered status if your plan has one, and the Health Insurance Marketplace notice, which carries no penalty for missing it but is still required under FLSA section 18B.
Use Technology and Smart Partners to Stay Compliant
Tracking hours, calculating affordability, and filing forms manually? Risky and time-consuming. Modern HR and benefits tech automates eligibility, safe harbor testing, and IRS form generation. And partnering with a broker, TPA, or benefits platform built for compliance matters a lot.
That's where Health-to-Wealth systems come in. Take WellthCare: its platform treats compliance as a core value. Its patent-pending tech tracks preventive care using standard medical codes, keeps audit-ready records, and works with your existing health plan. WellthCare, the first Health-to-Wealth Benefit System, is built to operate within ACA, ERISA, and HIPAA frameworks, with compliance-grade recordkeeping and formal legal support that protects employers while delivering engagement and savings. Automated reporting and record-keeping directly support ACA mandates around preventive care and transparency.
Best Practices to Stay Ahead
- Run an internal audit every year. Don't wait for an IRS letter. Review your coverage offers, affordability calculations, and reporting data before you file.
- Document every decision. Keep records of how you determined employee status, offers of coverage, and which safe harbor you used.
- Train your HR and benefits staff. Make sure they understand their role, especially with data entry and hours tracking.
- See compliance as a launchpad for innovation. A solid compliant plan lets you add other benefits, such as preventive care rewards tied to retirement savings or direct primary care, without worrying about regulatory blowback.
If the IRS Sends Letter 226-J
When the IRS believes an applicable large employer owes an Employer Shared Responsibility Payment, it sends Letter 226-J. The IRS builds its proposed assessment from the Forms 1094-C and 1095-C you filed and from employee tax returns that show premium tax credits for Marketplace coverage.
The letter arrives with a response form (Form 14764) and, when you dispute the calculation, a premium tax credit listing (Form 14765). You have 30 days from the letter date to respond, and you can request an extension if you need more time. Your documentation matters here. If your records show the coverage offer, the safe harbor calculation, and the underlying data, you can answer the proposal with evidence. You can also request a pre-assessment conference with the IRS Office of Appeals.
ACA compliance is a recurring habit. Build a structured process, use good tools, and make compliance part of your strategy. You'll replace a source of stress with a benefit that attracts and keeps good people. A compliant plan is the foundation of a benefits system that serves your company's financial health and your employees' physical and financial well-being.