1095 Codes Explained & 1095-C Codes (Cheat Sheet) – Every year, thousands of employers face IRS notices, penalty assessments, and costly corrections — not because they failed to offer health coverage, but because they reported it incorrectly. Form 1095-C is the backbone of ACA employer reporting, and the codes you enter on Lines 14, 15, and 16 directly determine whether the IRS views your organization as compliant with the employer mandate. Get them right, and you demonstrate full compliance and protect your company from Section 4980H penalties that can reach thousands of dollars per employee. Get them wrong, and you may face audits, IRS inquiries, or penalties you didn’t know you were at risk for. This guide covers every 1095-C code in plain English — what each one means, when to use it, how Lines 14 and 16 work together, and the most common mistakes employers make — so you can file with confidence.

What Are 1095 Codes?

If your organization is an Applicable Large Employer (ALE) — generally one with 50 or more full-time or full-time equivalent employees — you are required by the Affordable Care Act (ACA) to file IRS Form 1095-C for each full-time employee. Central to that filing is a set of alphanumeric codes that tell the IRS exactly what health coverage you offered, how much it cost, and whether your offer met the ACA’s affordability and minimum value standards.

These codes matter because the IRS uses them to determine:

• Whether you may owe an Employer Shared Responsibility Payment (ESRP) under Section 4980H.
• Whether any of your employees are eligible for a premium tax credit on the Health Insurance Marketplace.
• Whether your offer of coverage qualifies as Minimum Essential Coverage (MEC) and provides Minimum Value (MV).

This guide breaks down every 1095-C code — Lines 14, 15, 16, and 17 — with plain-English explanations, a full code reference table, real-world examples, and common mistakes to avoid.

Understanding Form 1095-C: The Three Key Lines

Form 1095-C, Employer-Provided Health Insurance Offer and Coverage, is a two-part form. Part I captures employee and employer information. Part II is where codes do the heavy lifting — across Lines 14, 15, 16, and (for ICHRA offers) 17.

Line 14 — Offer of Coverage (Code Series 1)

Line 14 tells the IRS what type of health coverage, if any, was offered to the employee, their spouse, and their dependents each month. This is a monthly report — you enter a code for each of the 12 calendar months, or use the ‘All 12 Months’ box if the same code applies all year.

Important: Line 14 codes describe what was offered, not what the employee enrolled in. If the employee was offered coverage but declined, you still report the offer.

Line 15 — Employee Required Contribution

Line 15 reports the monthly employee share of the lowest-cost, self-only plan that provides Minimum Value — regardless of which plan the employee actually chose. Line 15 is only completed when Line 14 contains one of the following codes: 1B, 1C, 1D, 1E, 1J, 1K, 1L, 1M, 1N, 1O, 1P, 1Q, 1T, or 1U. If the employee contribution is $0, enter 0.00. Leave Line 15 blank when code 1A or 1H is on Line 14.

Line 16 — Safe Harbor Codes (Code Series 2)

Line 16 provides the IRS with context about the employee’s employment status and whether the employer qualifies for relief from an ESRP for a given month. These codes explain why the employer may not owe a penalty — for instance, the employee wasn’t full-time, enrolled in offered coverage, or the offer met an affordability safe harbor.

Line 17 — ZIP Code (ICHRA Only)

Line 17 was introduced for Individual Coverage Health Reimbursement Arrangements (ICHRAs). When an employer offers ICHRA coverage, the affordability calculation is based on geography. Employers must enter the ZIP code of the employee’s primary work location or primary residence — depending on which basis was used to determine affordability.

Full List of 1095-C Line 14 Codes (Code Series 1)

The following table contains every currently active IRS Code Series 1 code used on Line 14 of Form 1095-C, as specified in the 2025 IRS Instructions for Forms 1094-C and 1095-C.

Code	Short Label	What It Means
1A	Qualifying Offer	Minimum essential coverage providing minimum value (MV) offered to the employee with a self-only contribution at or below 9.5% of the federal poverty line; MEC offered to spouse and dependents.
1B	MEC/MV – Employee Only	MEC providing MV offered to the employee only.
1C	MEC/MV – Employee + Dependents	MEC providing MV offered to the employee and at least their dependents (not spouse).
1D	MEC/MV – Employee + Spouse	MEC providing MV offered to the employee and at least their spouse (not dependents).
1E	MEC/MV – Employee, Spouse & Dependents	MEC providing MV offered to the employee, spouse, and dependents.
1F	MEC (No MV) – Employee, Spouse and/or Dependents	MEC NOT providing MV offered to the employee, or employee and spouse, or employee and dependents, or employee, spouse, and dependents.
1G	Non-Full-Time Employee with Self-Insured Coverage	Offer of coverage to employees who are NOT full-time for any month of the year AND enrolled in self-insured employer coverage.
1H	No Offer of Coverage	No offer of coverage made (or an offer that is not minimum essential coverage).
1I	Reserved	Not currently used by the IRS.
1J	MEC/MV – Employee; Conditional Offer for Spouse	MEC providing MV offered to employee; conditional offer to spouse only (not dependents).
1K	MEC/MV – Employee + Dependents; Conditional Offer for Spouse	MEC providing MV offered to employee and dependents; conditional offer to spouse.
1L	ICHRA – Employee Only (Primary Workplace)	Individual Coverage HRA offered to employee only, affordability based on employee’s primary workplace ZIP code.
1M	ICHRA – Employee + Dependents (Primary Workplace)	ICHRA offered to employee and dependents, affordability based on primary workplace ZIP code.
1N	ICHRA – Employee, Spouse & Dependents (Primary Workplace)	ICHRA offered to employee, spouse, and dependents, affordability based on primary workplace ZIP code.
1O	ICHRA – Employee Only (Primary Residence)	ICHRA offered to employee only, affordability based on primary residence ZIP code.
1P	ICHRA – Employee + Dependents (Primary Residence)	ICHRA offered to employee and dependents, affordability based on primary residence ZIP code.
1Q	ICHRA – Employee, Spouse & Dependents (Primary Residence)	ICHRA offered to employee, spouse, and dependents, affordability based on primary residence ZIP code.
1R	ICHRA Not Affordable – Employee Only	ICHRA offered to employee only, but NOT affordable (employee eligible for premium tax credit).
1S	ICHRA Not Affordable – Employee + Dependents and/or Spouse	ICHRA offered to employee and dependents and/or spouse, but NOT affordable.
1T	ICHRA Affordable – Employee Only (Non-Standard ZIP)	ICHRA affordable, offered to employee only; affordability based on non-standard ZIP code.
1U	ICHRA Affordable – Employee + Dependents (Non-Standard ZIP)	ICHRA affordable, offered to employee and dependents; affordability based on non-standard ZIP code.

Note: Code 1I is currently reserved and should not be used. Codes 1L through 1U are specifically for Individual Coverage HRA (ICHRA) reporting.

Full List of 1095-C Line 16 Codes (Code Series 2)

The Code Series 2 codes on Line 16 give the IRS additional context about each month. Enter only one code from Series 2 per calendar month. If more than one code could apply, the IRS instructions provide a priority order — generally, 2C takes priority over all others when the employee was enrolled.

Code	Short Label	What It Means
2A	Employee Not Employed	Employee was not employed on any day during the month.
2B	Employee Not Full-Time	Employee was not a full-time employee for the month AND did not enroll in coverage (or was in a Limited Non-Assessment Period).
2C	Employee Enrolled in Coverage	Employee enrolled in the employer-offered coverage for the entire month. Takes priority over most other codes.
2D	Limited Non-Assessment Period (LNAP)	Employee was in a Limited Non-Assessment Period (e.g., first 3 months for new hires, or initial measurement period for variable-hour employees).
2E	Multiemployer Interim Rule Relief	The employer relied on the multiemployer arrangement interim guidance.
2F	W-2 Safe Harbor	The employer used the W-2 affordability safe harbor for this employee for the year.
2G	Federal Poverty Line Safe Harbor	The employer used the federal poverty line (FPL) affordability safe harbor for this employee.
2H	Rate of Pay Safe Harbor	The employer used the rate of pay affordability safe harbor for this employee.
2I	Reserved	Not currently in use.

How Line 14 and Line 16 Work Together?

Think of Line 14 and Line 16 as telling a two-part story to the IRS. Line 14 says ‘here is what we offered’; Line 16 says ‘and here is why we should not owe a penalty.’ Used correctly, the right combination of codes demonstrates ACA compliance. Used incorrectly, they can trigger audits, IRS notices, or Section 4980H penalties.

Common Code Combinations

Scenario 1: Full-time employee enrolled in employer coverage

• Line 14: 1E (MEC/MV offered to employee, spouse, and dependents)
• Line 15: $[monthly employee contribution amount]
• Line 16: 2C (employee enrolled in employer coverage)

Scenario 2: Full-time employee declined coverage, employer used FPL safe harbor

• Line 14: 1E
• Line 15: $[monthly premium amount]
• Line 16: 2G (federal poverty line safe harbor)

Scenario 3: Employee was not employed during the month

• Line 14: 1H (no offer of coverage)
• Line 15: [blank]
• Line 16: 2A (not an employee)

Scenario 4: New hire in initial measurement period

• Line 14: 1H (no offer made during Limited Non-Assessment Period)
• Line 15: [blank]
• Line 16: 2D (Limited Non-Assessment Period)

Scenario 5: Part-time employee (not full-time, not enrolled)

• Line 14: 1H or appropriate offer code
• Line 16: 2B (employee not full-time for the month)

Scenario 6: Qualifying Offer to full-time employee (all 12 months)

• Line 14: 1A (all 12 months box)
• Line 15: [blank — leave blank when 1A is used]
• Line 16: Optional — 1A is treated as an affordability safe harbor by definition

ICHRA Codes on Line 14: A Closer Look

Individual Coverage Health Reimbursement Arrangements (ICHRAs) were introduced in 2020 and allow employers of any size to reimburse employees for individual health insurance premiums. ALEs that offer ICHRA coverage must use specific codes on Lines 14 and 17 of Form 1095-C.

ICHRA codes (1L through 1U) differ based on two variables:

• Who is covered: employee only; employee and dependents; or employee, spouse, and dependents.
• How affordability is determined: primary work location ZIP code vs. primary residence ZIP code.

When using ICHRA codes, employers must also complete Line 17 with the appropriate ZIP code used to calculate affordability. Codes 1R and 1S indicate that the ICHRA was offered but was NOT affordable, meaning the employee may still be eligible for a premium tax credit on the Marketplace.

Key Rules and Common Mistakes to Avoid

1. Don’t Leave Line 14 Blank

A code must be entered on Line 14 for every calendar month in which the employee was a full-time employee, even if no offer was made (use 1H). Blank lines are a common cause of IRS rejections.

2. Code 2C Takes Priority on Line 16

If an employee was enrolled in employer-offered coverage for an entire month, use 2C on Line 16 — regardless of whether another code like 2F or 2G might also apply. Enrollment always takes priority.

3. Line 15 Has Specific Triggers

Only complete Line 15 when Line 14 has a code that requires it (1B, 1C, 1D, 1E, 1J, 1K, 1L–1Q, 1T, 1U). Leave it blank for 1A and 1H. Do not report the amount the employee actually pays if they chose a more expensive plan — always report the employee contribution for the lowest-cost self-only MV plan.

4. Part-Time and Non-Full-Time Employees

If an employee was not full-time for a month (under 30 hours/week), use 2B on Line 16. If they were not employed at all, use 2A. Do not use 2C unless they were actually enrolled.

5. Mandatory e-Filing

As of 2024, employers filing 10 or more information returns in total must e-file their 1094-C and 1095-C forms. There is no longer a good-faith relief exception for incorrect or incomplete returns.

6. Alternative Furnishing Method (2024 Onward)

Effective January 31, 2024, employers are no longer required to automatically mail Form 1095-C to employees. They may instead post a clear, accessible notice on their website that employees can request a copy. For tax year 2025, the notice must be posted by March 2, 2026, and the form must be furnished within 30 days of an employee’s request.

1095-B vs. 1095-C vs. 1095-A: What’s the Difference?

Form	Who Files It	Purpose
1095-A	Health Insurance Marketplace (federal/state)	Reports Marketplace coverage; used by taxpayers to reconcile premium tax credits on their tax return.
1095-B	Insurance companies, small employers with self-insured plans, or other MEC providers	Reports that an individual had minimum essential coverage. Not used to determine employer mandate compliance.
1095-C	Applicable Large Employers (50+ full-time/FTE employees)	Reports health coverage offered to full-time employees, including the type of offer (Line 14 codes) and affordability (Line 15/16 codes). Used to enforce the employer mandate.

Affordability Safe Harbors Explained

An affordability safe harbor allows an employer to avoid the Section 4980H(b) penalty even if an employee receives a premium tax credit — as long as the employer’s offer met the safe harbor standard. There are three safe harbors, each reflected in a Line 16 code:

W-2 Safe Harbor (Code 2F)

Coverage is affordable if the employee’s required contribution for self-only coverage does not exceed 9.02% (2025 adjusted percentage) of their W-2 Box 1 wages from that employer. This is the most commonly used safe harbor.

Rate of Pay Safe Harbor (Code 2H)

Coverage is affordable if the employee’s required contribution does not exceed 9.02% of their monthly wages (hourly rate x 130 hours, or monthly salary). This is useful for salaried employees whose wages are consistent throughout the year.

Federal Poverty Line Safe Harbor (Code 2G)

Coverage is affordable if the employee’s monthly self-only contribution does not exceed 9.02% of the mainland FPL for a single person divided by 12. For 2025, this amount is approximately $103.28/month. This is the simplest safe harbor to administer since it uses a fixed dollar threshold for all employees, regardless of income.

Note: The affordability percentage adjusts annually. For tax year 2025, the rate is 9.02%. Always verify the current year’s percentage on IRS.gov before filing.

2025 Filing Deadlines

Requirement	Deadline
Furnish recipient copies to employees (or post website notice)	March 2, 2026
Paper filing with the IRS (if eligible — under 10 returns)	February 28, 2026
Electronic filing with the IRS	March 31, 2026

Frequently Asked Questions

What is the most common Line 14 code?

Code 1E is among the most frequently used — it indicates that Minimum Essential Coverage providing Minimum Value was offered to the employee, their spouse, and their dependents. Code 1A (Qualifying Offer) is also widely used by large employers who offer coverage meeting the most generous ACA standards.

What does code 1H mean on a 1095-C?

Code 1H means no offer of coverage was made for that month. This is used when the employee was not yet eligible, was part-time, or when the employer simply did not extend an offer. It is often paired with Line 16 codes like 2A (not employed) or 2B (not full-time).

What does code 2C mean?

Code 2C on Line 16 indicates the employee was enrolled in the employer-offered health coverage for that month. It takes priority over all other Line 16 codes when applicable.

Do I need to complete Line 17?

Only if you offered an ICHRA to the employee. Line 17 requires the ZIP code used to determine the affordability of the ICHRA — either the employee’s primary work location or primary residence, depending on the code used on Line 14.

Can I use the same code for all 12 months?

Yes. If the same Line 14 or Line 16 code applies for every month of the year, you can enter it in the ‘All 12 Months’ box rather than filling in each individual month.

What happens if I use the wrong codes?

Incorrect codes can result in IRS notices, rejected returns, or Section 4980H penalty assessments. With the end of good-faith relief, errors are now treated as reporting failures. It is critical to use the correct codes and to e-file if you are submitting 10 or more information returns.

Summary: Quick-Reference Cheat Sheet

Use this at-a-glance summary when completing Form 1095-C:

• Line 14 = What coverage was offered (Code Series 1: 1A–1U)
• Line 15 = Employee’s monthly contribution for self-only MV coverage (required with codes 1B–1E, 1J–1K, 1L–1U)
• Line 16 = Why the employer may not owe a penalty (Code Series 2: 2A–2H)
• Line 17 = ZIP code for ICHRA affordability (required with ICHRA codes on Line 14)
• Code 1A = Best offer (Qualifying Offer); code 1H = No offer
• Code 2C = Employee enrolled; takes priority over other Line 16 codes
• Codes 2F/2G/2H = Affordability safe harbors
• E-filing is mandatory for 10+ information returns
• 2025 affordability threshold = 9.02% of wages/FPL

Sources: IRS Instructions for Forms 1094-C and 1095-C (2025) | IRS.gov/ACA | IRS Publication 974 | IRS Notice 2025-15. This article is for informational purposes only and does not constitute legal or tax advice. Consult a qualified tax professional or benefits attorney for guidance specific to your organization.