5 Employee Health Plan Traps That Could Cost You $500 Per Head This Year -

Is Your Business At Risk?
5 Employee Health Plan Traps That Could Cost You $500 Per Head This Year

Running a thriving business means juggling countless responsibilities—from sales goals to employee morale. Yet, one often-overlooked area can quietly creep up and hit your bottom line: compliance with employee health plan regulations. Get it wrong, and you may find yourself on the hook for up to $500 per employee—a cost that adds up fast. Let’s walk through the five most common traps and how you can steer clear of them.

1. Misclassifying Your Workforce: Who Counts as Full-Time?

Why It Matters

Under the Affordable Care Act (ACA), any employer with 50 or more full-time equivalent (FTE) employees is considered an “applicable large employer” (ALE). ALEs must offer affordable, minimum-value coverage to at least 95% of their full-time workforce—or face penalties. Misclassify too many part-timers as FTEs, and you may suddenly cross that 50-employee threshold without realizing it.

The $500-Per-Head Hit

If you fail to offer coverage and at least one employee receives a premium tax credit, the penalty is calculated at:

$500 per full-time employee (excluding the first 30)
Prorated monthly if you come up short mid-year

That $500 figure can be a rude awakening when multiplied by dozens of heads.

Quick Tips to Avoid This Trap

Audit your headcount quarterly. Make sure part-timers aren’t inflating your FTEs.
Use the look-back measurement rules. Track hours over a 3- to 12-month period to determine FTE status.
Aggregate related companies. If you own multiple entities, IRS aggregation rules may combine your headcounts 😊 employer shared responsibility provisions.

2. Ignoring Measurement & Stability Periods: The Timing Game

What Are Measurement & Stability Periods?

To decide who is full-time, the IRS allows ALEs to use a measurement period (3–12 months) to gauge hours worked, followed by a stability period (the coverage window). But misapply these periods, and you could inadvertently drop eligible employees or delay coverage beyond the allowable waiting period.

How It Costs You

Late coverage offers (beyond a 90-day waiting period) can trigger up-to-$500-per-employee penalties.
Coverage gaps between measurement and stability periods may leave employees uninsured, leading to individual marketplace credits—and employer fines.

Best Practices

Choose consistent measurement windows. Align your payroll and benefits teams to the same calendar.
Communicate early. Let employees know their status as soon as measurement ends.
Build buffers. Start coverage 30 days before the 90-day deadline to avoid slip-ups.

3. Failing to Hit Affordability & Minimum-Value Marks

The Dual Test

Under IRC §4980H, coverage must be:

Affordable: Employee share ≤9.12% of household income (2025 threshold)
Minimum Value: Plan covers at least 60% of total allowed costs

Miss one, and you’re looking at Section 4980H(b) penalties—roughly $500 per head for each employee who claims a marketplace subsidy.

Common Pitfalls

Misusing safe-harbor calculations. There are three methods (Form W-2, rate of pay, federal poverty line)—pick the wrong one, and you miscalculate affordability.
Offering only “skinny” plans. High-deductible or limited-benefit options may fail the minimum-value requirement.

How to Stay Compliant

Run annual plan design tests using a benefits calculator or third-party vendor.
Document your chosen safe-harbor method in writing—updates must be published before each plan year.
Review your plan’s actuarial value every few years, especially after major benefit changes.

4. Skipping Required Notices & Reporting

The Paper Trail You Can’t Ignore

ALEs must distribute:

Form 1095-C to every full-time employee by January 31
Form 1094-C to the IRS (due February 28 if paper, March 31 if e-filed)

Late or incorrect filings can trigger penalties of $310 per return, capped annually per calendar year (indexed annually).

Real-World Cost

Say you have 100 full-time staff—if you miss the 1095-C deadline by even one day for all 100, you could face a fine of:

100 employees × $310 = $31,000

That’s $310 per head, on top of any $500 ACA-mandate penalties.

Staying Ahead

Automate your benefits administration. Electronic systems flag missing data before deadlines.
Hold a “dry run” of your transmission file in December.
Train HR staff yearly on IRS changes—this area sees frequent updates what the ACA means for employers.

5. Overlooking Waiting Period & Dependent Coverage Rules

The 90-Day Cap

Under ACA rules, you cannot impose a waiting period longer than 90 days before offering coverage. Extending it further—even by a day—means the waiting period violates the law and can trigger per-employee fines.

Dependent Coverage Must Be Offered

ALEs that provide employee coverage must also offer coverage to an employee’s dependents (children up to age 26). Failing to include dependents when you should can expose you to shared-responsibility payments if those dependents seek marketplace subsidies.

How to Dodge These Drawbacks

Check employee handbooks and benefit plan documents to ensure the waiting period ≤90 days.
Include dependent-coverage language in all benefit communications.
Audit enrollment rosters quarterly to verify dependent inclusion.

Table: Trap vs. Penalty vs. Prevention

Trap	Potential Penalty	Prevention Strategy
Misclassifying Part-Timers	$500 per full-time equivalent	Quarterly FTE audits; use look-back measurement
Misusing Measurement & Stability Period	$500 per employee for late offers	Consistent measurement windows; buffer before deadlines
Non-affordable or Non-MV Coverage	$500 per employee claiming subsidy	Annual affordability tests; document safe harbor choice
Late/Incorrect 1095-C Filings	$310 per return	Automate benefits admin; dry-run filings in December
Excess Waiting Period (>90 days)	$500 per late offer	Confirm waiting period ≤90 days in plan docs

Putting It All Together: A Compliance Checklist

Headcount Accuracy
- Perform a rolling audit of hours and employee classifications.
Benefits Design Review
- Test affordability and minimum value.
Timely Notices & Filings
- Automate Form 1095-C distribution and IRS e-filing.
Clear Communication
- Update employee handbooks with ACA rules (waiting periods, dependents).
Ongoing Education
- Train HR and finance teams annually on new IRS guidance.

Conclusion: Your Bottom Line Depends on It

Employee health plans aren’t just another line item in your budget—they’re a legal obligation. Mistakes in classification, reporting, or plan design can cost you hundreds of dollars per employee (and even more when penalties stack up). By understanding these five traps and proactively implementing the prevention strategies above, you protect both your workforce’s well-being and your company’s financial health. After all, avoiding a $500 hit per head is a lot easier than writing a check at year’s end.

Stay vigilant, stay informed, and keep compliance at the forefront of your benefits strategy. Your bottom line—and your employees—will thank you.