Understanding ACA Employer Penalties: A Complete Guide

Introduction: What Are ACA Employer Penalties and Why Should You Care?

If you're an employer asking "what are the ACA employer penalties," you're right to be concerned. The Affordable Care Act (ACA) created significant financial consequences for employers who fail to offer adequate health coverage to their workforce. These ACA employer penalties can reach millions of dollars annually, making compliance one of the most important financial considerations for businesses with 50 or more full-time equivalent employees.

The ACA employer penalties exist under Internal Revenue Code Section 4980H, commonly known as the "employer shared responsibility" provisions or "employer mandate." Under these rules, Applicable Large Employers (ALEs) must offer affordable, minimum value health coverage to at least 95% of their full-time employees and their dependents, or face substantial penalty assessments from the IRS. For tax year 2025, the penalty amounts reach $2,970 per full-time employee under Section 4980H(a) and $4,460 per employee receiving premium tax credits under Section 4980H(b).

Understanding what are the ACA employer penalties is critical for every business owner, HR director, and benefits administrator responsible for health coverage decisions. The consequences of non-compliance extend beyond just the penalty amounts themselves. Receiving IRS Letter 226-J (the penalty assessment notice) triggers a complex response process with tight deadlines, and failure to respond properly can result in losing your right to dispute the penalties. This comprehensive guide explains every aspect of ACA employer penalties, from how they're calculated to how you can avoid them entirely.

  • Two penalty types explained: Section 4980H(a) "sledgehammer" penalty vs. Section 4980H(b) "tack hammer" penalty
  • Current penalty amounts: 2025 and 2026 indexed penalty values
  • Letter 226-J process: How the IRS assesses penalties and your response options
  • Prevention strategies: How to structure coverage to avoid any penalty exposure

Understanding the Two Types of ACA Employer Penalties

Section 4980H(a): The "Sledgehammer" Penalty

The first type of ACA employer penalty is assessed under IRC Section 4980H(a), sometimes called the "sledgehammer" penalty because of its severity. This penalty applies when an Applicable Large Employer fails to offer minimum essential coverage (MEC) to at least 95% of its full-time employees (and their dependents) during any month of the year, AND at least one full-time employee receives a premium tax credit (PTC) for purchasing coverage through the Health Insurance Marketplace.

The Section 4980H(a) penalty is calculated as follows:

  • Monthly penalty: 1/12 of the annual amount multiplied by (total full-time employees minus 30)
  • Annual penalty (2025): $2,970 per full-time employee
  • The 30-employee reduction: The first 30 full-time employees are excluded from the calculation

Example Calculation: Suppose an employer has 200 full-time employees but only offers coverage to 150 of them (75%), and 10 employees obtain Marketplace coverage with premium tax credits. The employer would face a 4980H(a) penalty calculated as: (200 - 30) × $2,970 = $504,900 annual penalty.

The severity of this penalty makes it critical to understand the 95% threshold. If you have 100 full-time employees, you must offer coverage to at least 95 of them. If you have 200 full-time employees, you must offer coverage to at least 190. Missing this threshold by even a single employee can trigger the full sledgehammer penalty if any employee receives a premium tax credit.

Section 4980H(b): The "Tack Hammer" Penalty

The second type of ACA employer penalty is assessed under IRC Section 4980H(b), often called the "tack hammer" penalty because it's applied on a per-employee basis rather than across the entire workforce. This penalty applies when an employer DOES offer coverage to at least 95% of full-time employees, but the coverage either:

  • Is not affordable (the employee's required contribution exceeds 9.02% of their household income for 2025), OR
  • Does not provide minimum value (the plan pays less than 60% of expected health costs), OR
  • Was not offered to a specific full-time employee who then receives a premium tax credit

The Section 4980H(b) penalty is calculated differently:

  • Monthly penalty: 1/12 of the annual amount per affected employee
  • Annual penalty (2025): $4,460 per employee receiving a premium tax credit
  • No 30-employee reduction: Unlike 4980H(a), there is no reduction for the first 30 employees

Example Calculation: An employer offers coverage to all 200 full-time employees, but the coverage requires employees to pay 15% of their income (making it unaffordable). If 25 employees decline this coverage and obtain Marketplace coverage with premium tax credits, the employer would face: 25 × $4,460 = $111,500 annual penalty.

The Penalty Cap: 4980H(b) Cannot Exceed 4980H(a)

There's an important limitation on the 4980H(b) penalty: the total 4980H(b) penalty for any month cannot exceed what the 4980H(a) penalty would have been for that month. This prevents the per-employee tack hammer penalty from growing larger than the sledgehammer penalty would be. In practice, this cap only comes into play when a very large number of employees receive premium tax credits.

Current ACA Employer Penalty Amounts (2025-2026)

How Penalty Amounts Are Indexed

The ACA employer penalties are indexed annually for inflation based on premium growth. The IRS publishes the updated penalty amounts each year, typically in early spring for the upcoming tax year. Understanding these indexed amounts is essential for calculating your potential penalty exposure and making informed decisions about your health coverage offerings.

Tax Year 4980H(a) Penalty (Per Employee) 4980H(b) Penalty (Per Affected Employee) Affordability Threshold
2024 $2,880 $4,320 8.39%
2025 $2,970 $4,460 9.02%
2026 (Projected) ~$3,060 ~$4,590 TBD

The Affordability Safe Harbors

Since employers don't have access to employees' household income information (which is needed to determine true affordability), the IRS provides three safe harbors that employers can use to demonstrate affordability for purposes of avoiding ACA employer penalties:

1. W-2 Safe Harbor

Under this safe harbor, coverage is considered affordable if the employee's required contribution for the lowest-cost self-only coverage doesn't exceed 9.02% (for 2025) of the employee's Box 1 W-2 wages. This is often the simplest safe harbor to apply but can be challenging for employees with fluctuating income or those hired mid-year.

2. Rate of Pay Safe Harbor

This safe harbor uses the employee's hourly rate of pay (multiplied by 130 hours for hourly employees) or monthly salary to determine affordability. Coverage is affordable if the required contribution doesn't exceed 9.02% of this amount. This method works well for employees with consistent pay rates.

3. Federal Poverty Line (FPL) Safe Harbor

Under this safe harbor, coverage is affordable if the employee's required monthly contribution for the lowest-cost self-only coverage doesn't exceed 9.02% of the monthly federal poverty line for a single individual. For 2025, this means the employee contribution cannot exceed approximately $113.64 per month to be considered affordable under the FPL safe harbor.

Who Is Subject to ACA Employer Penalties?

Applicable Large Employer (ALE) Status

Only Applicable Large Employers are subject to ACA employer penalties. An employer is an ALE if it employed an average of at least 50 full-time equivalent employees during the prior calendar year. Understanding how to calculate your ALE status is the first step in determining your penalty exposure.

The FTE calculation involves:

  • Count full-time employees: Anyone working an average of 30 or more hours per week (or 130 hours per month)
  • Calculate part-time equivalents: Add up all part-time employee hours (max 120 per employee per month) and divide by 120
  • Add the totals: Combine full-time count and part-time FTE for each month
  • Average across the year: If the 12-month average is 50 or more, you're an ALE

Controlled Group Aggregation

Companies under common ownership must aggregate their employees when determining ALE status. This controlled group rule prevents employers from splitting into smaller entities to avoid the 50-employee threshold. Common control situations include:

  • Parent-subsidiary groups: Companies where one entity owns 80% or more of another
  • Brother-sister groups: Companies with common individual or family ownership
  • Combined groups: Combinations of parent-subsidiary and brother-sister relationships

While controlled group members must aggregate for ALE determination, each member company is separately responsible for offering coverage to its own employees and is separately liable for any ACA employer penalties that apply to it.

Which Employees Trigger Penalties?

Not every employee counts toward penalty calculations. Understanding which employees can trigger ACA employer penalties helps focus compliance efforts:

  • Full-time employees only: Penalties are based on full-time employees (30+ hours/week), not total employees
  • Premium tax credit recipients: Penalties are only triggered when full-time employees receive premium tax credits
  • Dependents matter: Failure to offer dependent coverage can trigger penalties even if employee coverage is offered
  • Limited non-assessment periods: New employees in waiting periods, newly full-time employees, and certain other situations may have limited non-assessment periods

How the IRS Assesses ACA Employer Penalties: Letter 226-J

The Letter 226-J Process

The IRS assesses ACA employer penalties through Letter 226-J, the Employer Shared Responsibility Payment (ESRP) proposed assessment notice. This letter is sent when the IRS determines, based on information from filed ACA forms and Marketplace data, that an employer may owe penalties. Understanding this process is critical because how you respond determines whether penalties are ultimately assessed.

Step 1: IRS Data Matching

The IRS matches information from several sources:

  • Forms 1094-C and 1095-C filed by the employer
  • Marketplace data showing which employees received premium tax credits
  • W-2 wage data from the Social Security Administration

Step 2: Letter 226-J Issuance

If the matching suggests potential penalties, the IRS sends Letter 226-J to the employer. This letter includes:

  • The proposed ESRP assessment amount
  • Form 14764, ESRP Response, which must be completed
  • Form 14765, Employee Premium Tax Credit (PTC) Listing, showing which employees triggered the potential penalty
  • Form 14765-A (if applicable), for penalty calculations on an employee-by-employee basis

Step 3: Employer Response

The employer has 30 days from the date of Letter 226-J to respond. This is a critical deadline. Response options include:

  • Agree with the assessment: Sign and return Form 14764 agreeing to pay
  • Disagree with the assessment: Provide documentation explaining why penalties don't apply
  • Partially agree: Accept some penalties while disputing others
  • Request additional time: Ask for an extension to gather documentation

Common Reasons Letter 226-J Assessments Are Incorrect

Many Letter 226-J assessments contain errors that can be corrected through the response process. Common issues include:

Incorrect Employee Status

  • Employees incorrectly classified as full-time when they were part-time
  • Employees included who were in valid waiting periods
  • Employees who were offered but declined coverage
  • Employees terminated before coverage would have been effective

Form 1095-C Errors

  • Incorrect codes entered on Lines 14, 15, or 16
  • Failure to use safe harbor codes when they applied
  • Data entry errors in employee Social Security Numbers
  • Forms not filed when they should have been filed

Marketplace Data Errors

  • Employees received premium tax credits incorrectly (they were actually offered affordable coverage)
  • Dependents received credits when they weren't eligible
  • Premium tax credits were later recaptured but IRS data wasn't updated

Responding to Letter 226-J: Best Practices

Successfully disputing ACA employer penalties requires careful documentation and timely response:

  • Act immediately: The 30-day deadline is firm; missing it can result in losing your dispute rights
  • Review each employee listed: Go through Form 14765 line by line to verify each employee's information
  • Gather supporting documentation: Collect enrollment records, offer letters, payroll data, and coverage election forms
  • File corrected forms if needed: If your original 1095-C forms had errors, file corrected ACA forms
  • Consider professional help: The response process can be complex; many employers work with tax professionals or their benefits advisors

Calculating Your Potential ACA Employer Penalty Exposure

4980H(a) Penalty Calculation Worksheet

Use this worksheet to estimate your potential 4980H(a) "sledgehammer" penalty exposure:

Calculation Step Your Numbers Notes
A. Total full-time employees _______ Average monthly count
B. Employees offered MEC _______ Must include dependents
C. Coverage percentage (B ÷ A) _______% Must be 95% or higher
D. If C < 95%: (A - 30) × $2,970 $_______ Annual penalty exposure

4980H(b) Penalty Calculation Worksheet

Use this worksheet to estimate your potential 4980H(b) "tack hammer" penalty exposure:

Calculation Step Your Numbers Notes
A. Employees not offered coverage _______ Who obtained PTC
B. Employees with unaffordable coverage _______ Who obtained PTC
C. Total PTC recipients (A + B) _______ Sum of A and B
D. Annual penalty: C × $4,460 $_______ Annual penalty exposure

Real-World Penalty Scenarios

Scenario 1: Large Manufacturer - No Coverage Offered

A manufacturing company with 500 full-time employees decides not to offer health coverage at all. During the year, 75 employees obtain Marketplace coverage with premium tax credits.

  • Penalty type: 4980H(a) applies (less than 95% offered coverage)
  • Calculation: (500 - 30) × $2,970 = $1,395,900 annual penalty

Scenario 2: Retail Chain - Unaffordable Coverage

A retail chain with 300 full-time employees offers coverage to all employees, but requires employees to contribute $400 per month for single coverage. For many hourly workers, this exceeds the affordability threshold. 40 employees decline coverage and obtain Marketplace coverage with premium tax credits.

  • Penalty type: 4980H(b) applies (coverage offered but not affordable)
  • Calculation: 40 × $4,460 = $178,400 annual penalty

Scenario 3: Healthcare System - Coverage Gap

A healthcare system with 1,000 full-time employees offers coverage to 920 employees (92%) due to administrative oversights with new hires. 15 of the employees not offered coverage obtain premium tax credits.

  • Penalty type: 4980H(a) applies (less than 95% offered coverage)
  • Calculation: (1,000 - 30) × $2,970 = $2,880,900 annual penalty
  • Note: Even though only 15 employees triggered the penalty, the full sledgehammer amount applies

Scenario 4: Staffing Company - Variable Hour Employees

A staffing company with 150 full-time employees offers affordable coverage to all full-time employees. However, due to variable hour measurement period complexities, 5 employees who became full-time weren't offered coverage during their administrative periods and obtained Marketplace coverage with premium tax credits.

  • Penalty type: 4980H(b) applies (coverage offered to 95%+, but not to specific employees)
  • Calculation: 5 × $4,460 = $22,300 annual penalty

How to Avoid ACA Employer Penalties: Prevention Strategies

Strategy 1: Ensure 95% Coverage Offer Compliance

The most important step in avoiding ACA employer penalties is ensuring you offer minimum essential coverage to at least 95% of your full-time employees. This requires:

  • Accurate full-time employee tracking: Use proper measurement methods to identify full-time employees
  • Include dependents: Coverage must be offered to dependent children up to age 26 (spousal coverage is not required)
  • Timely offers: Coverage must be offered within allowable waiting periods
  • Document everything: Keep records of all coverage offers made

Strategy 2: Meet Affordability Requirements

Even if you offer coverage to all employees, unaffordable coverage can trigger penalties. To ensure affordability:

  • Calculate required contributions carefully: Don't exceed 9.02% of employee income (using an appropriate safe harbor)
  • Use the FPL safe harbor for simplicity: Cap employee contributions at approximately $113.64 per month for 2025
  • Review contributions annually: Adjust as the affordability threshold changes each year
  • Document your safe harbor method: Record which safe harbor you're using on each 1095-C

Strategy 3: Ensure Minimum Value Coverage

Your health plan must provide minimum value, meaning it covers at least 60% of expected health costs. To verify this:

  • Use the HHS MV Calculator: The free online tool determines whether your plan meets minimum value
  • Request MV certification from your insurer: For fully-insured plans, insurers typically certify minimum value
  • Review plan design changes: Any significant plan changes should be re-evaluated for MV compliance

Strategy 4: Proper ACA Reporting

Accurate ACA reporting is essential for demonstrating compliance and avoiding erroneous penalty assessments:

Strategy 5: Monitor and Track Full-Time Status

For employers with variable hour employees, proper use of measurement periods is critical:

  • Choose appropriate measurement periods: Monthly or look-back measurement methods
  • Track hours consistently: Implement systems to accurately record hours worked
  • Apply stability periods correctly: Once determined full-time, maintain coverage for the stability period
  • Document your measurement method: Keep records of your chosen approach and its consistent application

ACA Employer Penalties vs. Information Return Penalties

Understanding the Difference

It's important to distinguish ACA employer penalties (Section 4980H penalties for not offering adequate coverage) from information return penalties (penalties for failing to file or furnish ACA forms properly). Both are significant, but they apply to different compliance failures.

Aspect 4980H Employer Penalties Information Return Penalties
What triggers them Not offering adequate health coverage Not filing or furnishing ACA forms correctly
Penalty amounts (2025) $2,970 or $4,460 per employee $60-$330 per form (with caps)
Who's affected Applicable Large Employers only All entities required to file ACA forms
Notice received Letter 226-J Various IRS penalty notices
How to avoid Offer affordable, minimum value coverage File accurate forms by deadline

Both types of penalties can apply simultaneously. An employer that fails to offer coverage AND fails to file 1095-C forms can face 4980H penalties plus information return penalties. Learn more about ACA Form 1095 penalties specifically.

State-Level ACA Penalties and Requirements

State Individual Mandate Considerations

While the federal individual mandate penalty was reduced to $0 starting in 2019, several states have enacted their own health coverage mandates. Though these primarily affect individuals, they create additional reporting requirements for employers and can influence employee decisions about coverage.

States with individual mandates and reporting requirements include:

Impact on Employer Strategy

Employers with employees in mandate states should consider:

  • Additional reporting burden: State filings require extra administrative effort
  • Employee awareness: Employees in these states face individual penalties for lacking coverage
  • Coverage decisions: Strong coverage offerings can help retain employees in mandate states

Frequently Asked Questions About ACA Employer Penalties

What are the ACA employer penalties for 2025?

For tax year 2025, the ACA employer penalties are $2,970 per full-time employee under Section 4980H(a) (minus the first 30 employees) and $4,460 per employee receiving a premium tax credit under Section 4980H(b). These amounts are indexed annually for inflation. The 4980H(a) penalty applies when employers fail to offer coverage to at least 95% of full-time employees, while 4980H(b) applies when coverage is offered but isn't affordable or doesn't provide minimum value.

How do I know if I'm subject to ACA employer penalties?

You're subject to ACA employer penalties if you're an Applicable Large Employer (ALE), meaning you had an average of 50 or more full-time equivalent employees during the prior calendar year. To determine ALE status, count all full-time employees (30+ hours/week) plus a calculation of part-time employee hours divided by 120. If your average monthly total across all 12 months equals 50 or more, you're an ALE and must comply with the employer mandate.

What triggers the IRS to send Letter 226-J?

The IRS sends Letter 226-J when their data matching indicates potential ACA employer penalties. This typically happens when one or more full-time employees received premium tax credits for Marketplace coverage, and the employer's filed Forms 1094-C and 1095-C suggest the employer either didn't offer coverage to 95% of employees or didn't offer affordable, minimum value coverage. Letter 226-J is a proposed assessment giving you 30 days to respond.

Can I dispute ACA employer penalties?

Yes, you can dispute ACA employer penalties proposed in Letter 226-J. You have 30 days from the letter date to respond with Form 14764. Common grounds for disputing include: employees were incorrectly classified as full-time, employees were offered coverage but it wasn't properly reported, safe harbor codes were applicable but not used, or Marketplace data was incorrect. Provide supporting documentation with your response, and file corrected 1095-C forms if needed.

What is the difference between 4980H(a) and 4980H(b) penalties?

Section 4980H(a) is the "sledgehammer" penalty that applies when an employer fails to offer minimum essential coverage to at least 95% of full-time employees and at least one employee receives a premium tax credit. It's calculated across all full-time employees (minus 30). Section 4980H(b) is the "tack hammer" penalty that applies on a per-employee basis when coverage is offered to 95%+ of employees but specific employees receive premium tax credits because coverage wasn't offered to them, wasn't affordable, or didn't provide minimum value.

What does "affordable" coverage mean under the ACA?

Coverage is considered affordable for avoiding ACA employer penalties if the employee's required contribution for the lowest-cost self-only option doesn't exceed 9.02% of their household income (for 2025). Since employers don't know household income, they can use safe harbors: W-2 wages, rate of pay, or federal poverty line. The FPL safe harbor for 2025 requires contributions not to exceed approximately $113.64 per month for coverage to be deemed affordable.

Do I have to offer coverage to dependents?

Yes, to avoid ACA employer penalties, Applicable Large Employers must offer coverage that extends to dependent children up to age 26. However, you are NOT required to offer coverage to spouses. Failure to offer dependent coverage can trigger 4980H(a) penalties even if you offer coverage to all full-time employees themselves. Dependent coverage doesn't need to meet affordability requirements-only the employee's self-only contribution matters for affordability testing.

Can small employers face ACA penalties?

Small employers (those with fewer than 50 full-time equivalent employees) are NOT subject to Section 4980H ACA employer penalties for not offering health coverage. The employer mandate only applies to Applicable Large Employers. However, small employers with self-insured plans must still file 1095-B forms and can face information return penalties for late or incorrect filings. Small employers should still verify their FTE count annually, especially if growing, as crossing the 50-employee threshold triggers ALE status.

How long does the IRS have to assess ACA penalties?

The IRS generally has three years from the later of the due date or actual filing date of Form 1094-C to assess ACA employer penalties. However, this period can be extended in cases of substantial underreporting or fraud. Letter 226-J notices are typically issued 12-18 months after the relevant tax year ends. Employers should retain ACA records for at least seven years to defend against potential assessments and respond to any IRS inquiries.

What happens if I don't respond to Letter 226-J?

If you don't respond to Letter 226-J within 30 days, the IRS will issue Letter 227, which confirms the penalty assessment. At that point, you lose many dispute rights and the ACA employer penalties become due. You may still be able to request an appeal, but your options are significantly limited. The IRS will proceed with collection actions, which can include levies and liens. Always respond to Letter 226-J, even if only to request additional time.

Can I get penalty relief for good faith compliance efforts?

The IRS has shown willingness to provide relief from ACA employer penalties in certain situations, particularly in early years of the mandate and for good faith compliance efforts. Factors that may support relief include: reasonable interpretation of complex regulations, prompt correction of errors, maintaining documentation of compliance efforts, and filing corrected forms when mistakes are discovered. Document your compliance procedures thoroughly to support any relief requests.

How do premium tax credits work in triggering penalties?

ACA employer penalties are only triggered when at least one full-time employee receives a premium tax credit (PTC) for Marketplace coverage. Premium tax credits are available to individuals who purchase coverage through Healthcare.gov (or state marketplaces) and meet income requirements. If an employee is offered affordable, minimum value coverage by their employer, they generally cannot receive a PTC. This is why accurate ACA reporting is crucial-it informs the Marketplace about what coverage you offered.

How BoomTax Helps You Avoid ACA Employer Penalties

Understanding what are the ACA employer penalties is only the first step-you also need the tools and processes to avoid them. BoomTax provides a comprehensive ACA compliance solution designed to help Applicable Large Employers meet their obligations and avoid costly penalties:

  • Accurate ACA reporting: File Forms 1095-C and 1094-C with comprehensive data validation that catches errors before they result in penalty assessments
  • Code selection assistance: Guidance on proper Line 14, 15, and 16 codes to accurately document your coverage offers and safe harbor usage
  • Bulk data import: Upload employee data from payroll systems like ADP, Workday, UKG, and others to minimize manual entry errors
  • State filing support: Handle California, New Jersey, Rhode Island, D.C., and Massachusetts state filings from the same platform
  • Employee distribution: Print and mail services ensure employees receive their 1095-C copies by the furnishing deadline
  • Unlimited corrections: File corrected forms at no additional cost when you discover errors
  • No TCC required: BoomTax transmits directly to the IRS AIR system as an authorized provider, eliminating the need for your own Transmitter Control Code
  • Multi-EIN support: Manage ACA compliance for multiple employer entities or clients from a single account

Proper ACA reporting through BoomTax creates the documentation you need to defend against erroneous Letter 226-J penalty assessments. When the IRS can see that you offered affordable, minimum value coverage to all full-time employees and their dependents, you have the evidence needed to dispute any incorrect penalty proposals.

For employers who prefer to focus on their core business, BoomTax also offers ACA reporting services where our team handles the entire filing process on your behalf. Either way, you get the peace of mind that comes from knowing your ACA compliance is handled correctly.

Ready to ensure you avoid ACA employer penalties? Get started with BoomTax today and experience stress-free ACA compliance.

Conclusion: Protecting Your Organization from ACA Employer Penalties

ACA employer penalties represent one of the most significant compliance risks facing Applicable Large Employers today. With Section 4980H(a) penalties reaching $2,970 per employee and Section 4980H(b) penalties at $4,460 per affected employee for 2025, the financial stakes are substantial. A mid-sized employer with 200 employees could face penalties exceeding $500,000 annually for failing to comply with employer mandate requirements.

The key takeaways for avoiding these penalties are clear:

  • Know your ALE status: Calculate your FTE count accurately, including controlled group aggregation
  • Offer coverage broadly: Ensure at least 95% of full-time employees (and their dependents) are offered minimum essential coverage
  • Make coverage affordable: Keep employee contributions below the affordability threshold using appropriate safe harbors
  • Provide minimum value: Ensure your plan pays at least 60% of expected health costs
  • Report accurately: File correct Forms 1095-C with appropriate codes by the deadline
  • Respond promptly: If you receive Letter 226-J, respond within 30 days with documentation

By implementing these strategies and using reliable ACA reporting software like BoomTax, you can navigate employer mandate compliance confidently. The investment in proper compliance far outweighs the potential cost of ACA employer penalties, and accurate record-keeping provides the documentation you need to defend against any erroneous penalty assessments.

References and Additional Resources

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