4980H Safe Harbor: W-2, Rate of Pay, and Federal Poverty Line

For the 2026 plan year, employer-sponsored coverage is treated as affordable when the employee’s share of the lowest-cost self-only option that provides minimum value stays at or below 9.96% of household income.¹ Since no employer can see each worker’s household tax return, the IRS built three 4980H affordability safe harbors that substitute readily available data: the W-2 safe harbor, the rate of pay safe harbor, and the federal poverty line safe harbor. Satisfy any one of them for an employee and you are shielded from a Penalty B assessment for that employee, even if the employee’s actual household income would have made the coverage unaffordable.²

What the Safe Harbors Protect Against

An Applicable Large Employer faces a potential penalty only when at least one full-time employee enrolls in a Marketplace plan and receives a premium tax credit.³ When that happens, one of two penalties can apply. Penalty A hits employers that fail to offer minimum essential coverage to at least 95% of full-time employees and their dependents; for 2026 it runs $3,340 per full-time employee for the year, minus the first 30. Penalty B hits employers that cleared the 95% offer threshold but still had employees qualify for a credit because the coverage was unaffordable or failed to provide minimum value; for 2026 it runs $5,010 per year for each such employee, calculated monthly.⁴

Penalty B is the one the affordability safe harbors defend against directly. Penalty B in any month is also capped at what Penalty A would have been for that month, so an employer offering coverage to at least 95% of its workforce will never owe more than it would have owed for offering nothing.⁵

Across all three safe harbors, the affordability test compares the employee’s required contribution for the lowest-cost self-only minimum-value plan against a proxy for income. The threshold is always 9.96% for 2026. What changes between the methods is the denominator.

The W-2 Wages Safe Harbor

The W-2 safe harbor measures affordability against the wages reported in Box 1 of the employee’s Form W-2. You satisfy it when the employee’s total annual premium contribution for self-only coverage does not exceed 9.96% of Box 1 wages for the calendar year.⁶ The required contribution has to stay at a consistent dollar amount or a consistent percentage of wages throughout the year. Adjusting the contribution partway through to hit the math is not permitted.

The drawback is that this method is entirely retrospective. You won’t know the final Box 1 figure until after the calendar year ends, so you set contributions in January without knowing whether they will pass. An employee who takes extended unpaid leave, drops to part-time hours, or terminates mid-year will finish with lower W-2 wages, and a contribution that looked comfortably affordable in January can breach 9.96% by December. The regulation does allow proration when coverage was not offered for the full year: you prorate W-2 wages to reflect only the months coverage was offered.⁶ Even with that adjustment, this is the riskiest of the three methods for employers with volatile hours or high turnover.

The Rate of Pay Safe Harbor

The rate of pay safe harbor is the one most employers with hourly workforces prefer because it gives forward-looking certainty. For an hourly employee, you multiply the hourly rate by 130 hours to get a deemed monthly income, then confirm the monthly premium contribution stays at or below 9.96% of that figure.⁶ An employee earning $15 an hour has a deemed monthly income of $1,950, so the maximum affordable monthly contribution is $194.22. If the hourly rate changes during the year, you use the lower of the two rates for the affected month.

For salaried employees, you use the monthly salary at the start of the coverage period. If salary is later reduced, you use the reduced amount going forward. The appeal over the W-2 method is straightforward. You set the contribution on day one of the plan year and know immediately whether you pass, and the only situation that creates trouble is a wage cut you did not anticipate.

The Federal Poverty Line Safe Harbor

The federal poverty line safe harbor is administratively the simplest because it ignores each employee’s compensation. The employee’s monthly contribution just needs to stay at or below 9.96% of the federal poverty line for a single individual, divided by 12.² You are permitted to use the FPL in effect six months before the start of the plan year, which locks in a single number well before open enrollment.

For a calendar-year 2026 plan, the FPL in effect six months prior (July 2025) was $15,060 for a single individual, producing a maximum monthly employee contribution of $124.90. Employers that prefer to use the updated 2026 FPL of $15,960 can do so instead, which raises the ceiling to about $132.47 per month.⁷ Either way, the number is fixed for the whole plan year, so nothing an employee does mid-year can change the outcome.

The trade-off is that FPL typically produces the lowest permissible employee contribution of the three methods. If most of your workforce earns well above minimum wage, the W-2 or rate of pay approaches will let you charge more while still passing.

Choosing Between the Three Methods

You are not locked into one safe harbor across the whole workforce. The IRS allows you to apply different safe harbors to different reasonable categories of employees, such as salaried versus hourly, employees in different geographic locations, or distinct job classifications. Once you pick a safe harbor for a category, you have to apply it uniformly to everyone in that group. Creating a category by naming specific individuals is not allowed.

In practice, the pattern is fairly predictable. Hourly workers go under rate of pay because it is straightforward and forward-looking. Stable salaried workers slot naturally into rate of pay or W-2. Organizations with a large low-wage workforce, where contribution margins are thin and wage tracking is a headache, often default to the FPL method across the board because it eliminates any income-tracking obligation. The right pick depends less on which method sounds easiest and more on which one minimizes the risk of failing the affordability test for the employees most likely to seek Marketplace subsidies.

Reporting the Safe Harbor on Form 1095-C

Your safe harbor election is reported on Form 1095-C for each full-time employee. Line 14 reports the type of offer using indicator codes, and line 16 reports which safe harbor established affordability.⁸ The line 16 codes are:

Code 2F for the W-2 safe harbor
Code 2G for the federal poverty line safe harbor
Code 2H for the rate of pay safe harbor

Entering the correct code on line 16 is the direct defense against a Penalty B assessment. The IRS uses these codes to decide whether to accept your affordability position without further inquiry. Line 14 has its own set of codes for the offer itself. Code 1A signals a qualifying offer where the employee contribution is at or below 9.96% of the mainland single federal poverty line and the offer extends to spouse and dependents.⁹

Getting the code wrong, or leaving line 16 blank when a safe harbor applies, is one of the most common and most avoidable filing mistakes. An employer that legitimately passed the rate of pay safe harbor but forgot to enter Code 2H can receive a proposed penalty that a single keystroke would have prevented.

If the IRS Sends Letter 226-J

When the IRS believes an ESRP assessment is due, it issues Letter 226-J proposing a dollar amount and identifying the employees whose premium tax credits triggered the calculation.¹⁰ This is where your safe harbor documentation earns its keep.

Start with the attached Form 14765, which lists each employee the IRS identified as receiving a credit. Compare that list against your Forms 1095-C filings for the same year. Common issues include employees who were not actually full-time, employees for whom you can prove an affordable offer was made under a safe harbor, and simple data mismatches between your filing and the Marketplace records. Complete Form 14764 (the ESRP Response) indicating whether you agree or disagree, provide any corrected data, and return everything by the response deadline in the letter. If you need representation, file Form 2848 specifying the Section 4980H Shared Responsibility Payment for the relevant year.¹⁰

A separate Marketplace appeal track also exists. If an employee’s Marketplace enrollment notice comes to you, you have 90 days to appeal to the Marketplace by demonstrating that your coverage was affordable and met minimum value.¹¹ That appeal does not substitute for responding to Letter 226-J. The two processes run independently, and contesting an assessment in full means engaging with both.

1
Internal Revenue Service. Revenue Procedure 2025-25
2
Internal Revenue Service. Minimum Value and Affordability
3
Internal Revenue Service. Employer Shared Responsibility Provisions
4
Internal Revenue Service. Revenue Procedure 2025-26 – Section 4980H Indexing Adjustments
5
Internal Revenue Service. Questions and Answers on Employer Shared Responsibility Provisions Under the Affordable Care Act
6
GovInfo. 26 CFR 54.4980H-5 – Assessable Payments Under Section 4980H
7
HHS ASPE. 2026 Poverty Guidelines – 48 Contiguous States
8
Internal Revenue Service. Questions and Answers About Information Reporting by Employers on Form 1094-C and Form 1095-C
9
Internal Revenue Service. Instructions for Forms 1094-C and 1095-C
10
Internal Revenue Service. Understanding Your Letter 226-J
11
HealthCare.gov. Decisions Employers Can Appeal