Understanding Form 1095-C: The Employer-Provided Health Insurance Offer and Coverage Report

Introduction: Why Form 1095-C Matters to Employers and Employees

If you work for a large employer or manage health benefits administration, you have likely encountered Form 1095-C. But what is 1095-C exactly, and why does it matter? Form 1095-C is an IRS tax document that reports information about health insurance coverage offered by Applicable Large Employers (ALEs) to their full-time employees. This form plays a central role in Affordable Care Act (ACA) compliance, serving as the official record of whether employers provided qualifying health coverage and whether that coverage met federal affordability and minimum value standards.

The consequences of misunderstanding what is 1095-C can be significant. For employers, failure to properly complete and file Form 1095-C can result in IRS penalties reaching $330 per form or more, with potential total penalties in the hundreds of thousands of dollars for large organizations. For employees, Form 1095-C provides essential documentation about their health coverage, though it is not required to file individual tax returns. Understanding this form helps both employers meet their compliance obligations and employees verify their health insurance status.

This comprehensive guide answers the question "what is 1095-C" from every angle. We will explain who must file the form, what information it contains, how to complete each section, key deadlines, common mistakes to avoid, and how the form fits into the broader ACA reporting landscape. Whether you are an HR professional preparing for filing season, a benefits administrator at a large employer, or an employee who received this form and wants to understand it, this article provides the complete picture.

Key topics covered in this guide include:

  • Definition and purpose: What Form 1095-C is and why it exists
  • Who must file: Applicable Large Employer requirements
  • Form structure: Understanding Parts I, II, and III
  • Line 14, 15, and 16 codes: Coverage offer and safe harbor indicators
  • Filing deadlines: When to submit and furnish Form 1095-C
  • Penalties: Consequences of non-compliance
  • 1095-C vs. 1095-B: Understanding the differences
  • State requirements: Additional filing obligations

What is Form 1095-C? Definition and Purpose

The Official Definition of Form 1095-C

Form 1095-C, officially titled "Employer-Provided Health Insurance Offer and Coverage," is an IRS information return used by Applicable Large Employers to report health coverage information to the IRS and to their full-time employees. The form documents whether an employer offered minimum essential coverage, whether the coverage was affordable, and whether the employee enrolled in the offered coverage. This information enables the IRS to enforce the ACA's employer mandate, also known as the "employer shared responsibility" provisions.

Understanding what is 1095-C requires recognizing its dual purpose. First, it serves as the employer's proof of compliance with ACA requirements. When an employer properly files Form 1095-C showing they offered qualifying coverage, they demonstrate they are not subject to the employer mandate penalty. Second, it informs employees about the health coverage available to them, though employees generally do not need the form to file their individual tax returns.

The legal foundation for Form 1095-C comes from Internal Revenue Code Section 6056, which was added by the Affordable Care Act. This section requires ALEs to report to the IRS about the health coverage they offer to full-time employees. The reporting helps the IRS determine whether employers are meeting their obligations and whether individual taxpayers are eligible for premium tax credits when purchasing insurance through the Health Insurance Marketplace.

Who Must File Form 1095-C

The question of what is 1095-C is inseparable from understanding who must file it. Form 1095-C must be filed by Applicable Large Employers—organizations that employed an average of at least 50 full-time employees (including full-time equivalent employees) during the prior calendar year. This determination is made annually, meaning an employer's status can change from year to year based on workforce size.

Who qualifies as an Applicable Large Employer:

  • 50+ full-time employees: Organizations with at least 50 employees working 30 or more hours per week
  • Full-time equivalent calculation: Part-time hours are combined using the FTE calculation method
  • Controlled groups: Related companies under common ownership are aggregated for the 50-employee test
  • Seasonal worker exception: Employers can exclude seasonal workers who work fewer than 120 days per year in some cases

Employers who meet the ALE threshold must file Form 1095-C for every individual who was a full-time employee for any month during the tax year. This includes employees who terminated during the year, employees on leave, and newly hired employees who were full-time for even a single month. Part-time employees who never achieved full-time status do not receive Form 1095-C.

Who Receives Form 1095-C

Beyond understanding what is 1095-C, employers need to know who must receive a copy. Every full-time employee covered by the reporting requirement must receive their own Form 1095-C. The form is furnished (delivered) to employees and filed with the IRS—these are two separate obligations with different deadlines.

Individuals who must receive Form 1095-C:

  • Current full-time employees: Anyone employed as of December 31 who averaged 30+ hours per week during the year
  • Terminated full-time employees: Former employees who met full-time status during any month before termination
  • Employees on leave: Full-time employees on FMLA, disability, or other leave types
  • Variable-hour employees: Workers who were determined to be full-time during measurement periods
  • Part-year employees: Individuals who were full-time for at least one month during the tax year

Dependents covered by the employee's health insurance are listed on Part III of the form but do not receive separate 1095-C forms. Only the employee (the primary policyholder from the employer's perspective) receives the form, with dependent information included on the employee's form when applicable.

Form 1095-C Structure: Understanding the Three Parts

Part I: Employee and Employer Information

When examining what is 1095-C, Part I provides the foundational identification information. This section identifies both the employer (the ALE) and the employee who is the subject of the form. Accurate completion of Part I is essential because errors here can cause the entire form to be rejected or result in penalty notices.

Part I includes the following fields:

Line Field Name Description
1 Employee Name Full legal name (first, middle initial, last)
2 Social Security Number Employee's SSN (or date of birth if SSN unavailable)
3-6 Employee Address Street address, city, state, ZIP code, and country
7 Employer Name Legal name of the Applicable Large Employer
8 Employer Identification Number The EIN of the ALE member filing the form
9-13 Employer Address and Contact Address and phone number for the employer

The employee's Social Security Number must match IRS records exactly. Mismatches between the name and SSN are a leading cause of form rejections. Employers should verify employee SSNs before filing to avoid costly corrections.

Part II: Employee Offer and Coverage

Part II is the heart of what is 1095-C reporting. This section documents the health coverage offered to the employee on a month-by-month basis. It uses a series of codes on Lines 14, 15, and 16 to communicate what coverage was offered, at what cost to the employee, and any applicable safe harbor or other relief the employer is claiming.

Part II Line Structure:

  • Line 14 - Offer of Coverage: A code indicating what type of coverage was offered to the employee (e.g., minimum value coverage to employee only, to employee and dependents, etc.)
  • Line 15 - Employee Share of Lowest Cost Monthly Premium: The amount the employee would pay for the lowest-cost self-only minimum value coverage offered, used for affordability determinations
  • Line 16 - Applicable Section 4980H Safe Harbor: Codes indicating safe harbors or relief the employer claims, such as the W-2 safe harbor, Federal Poverty Line safe harbor, or Rate of Pay safe harbor

Each line has 12 monthly columns plus an "All 12 Months" column that can be used when the same information applies to every month of the year. Understanding the proper codes for each line is critical for accurate reporting. Common Line 14 codes include:

Code Meaning
1A Qualifying offer: Minimum value coverage offered to employee with employee cost not exceeding 9.5% of mainland single FPL, plus minimum essential coverage offered to spouse and dependents
1B Minimum value coverage offered to employee only
1C Minimum value coverage offered to employee and at least minimum essential coverage offered to dependents (not spouse)
1D Minimum value coverage offered to employee and at least minimum essential coverage offered to spouse (not dependents)
1E Minimum value coverage offered to employee, spouse, and dependents
1F Minimum value coverage not offered to employee, but minimum essential coverage offered to spouse and dependents
1G Offer of coverage to employee who was not a full-time employee for any month of the year and enrolled in self-insured coverage
1H No offer of coverage
1I Qualifying offer transition relief (limited availability)
1J-1S Various combinations involving ICHRA or conditional offers

Part III: Covered Individuals (Self-Insured Plans Only)

Part III of what is 1095-C applies only to employers who offer self-insured health coverage. This section lists all individuals who were actually enrolled in the employer's self-insured plan during the year, including the employee and any covered dependents. Employers with fully-insured plans (where an insurance company provides the coverage) leave Part III blank.

Information reported in Part III:

  • Covered individual name: Full name of each person enrolled in coverage
  • SSN or date of birth: Social Security Number or date of birth if SSN is unavailable
  • Months of coverage: Checkboxes indicating which months each individual was covered

For self-insured employers, Part III serves the same function as Form 1095-B does for insurers—it documents that individuals had minimum essential coverage during the year. This is important for employees because it verifies their coverage status. For employers with fully-insured plans, the insurance company files Form 1095-B separately to report who was covered.

Key Concepts: Affordability, Minimum Value, and Safe Harbors

Understanding Affordability Under the ACA

A core concept in understanding what is 1095-C is affordability. Under the ACA, employer-sponsored coverage is considered "affordable" if the employee's required contribution for self-only coverage does not exceed a specified percentage of the employee's household income. For tax year 2025, the affordability threshold is 9.02% of household income.

The affordability determination matters because it affects:

  • Employee eligibility for premium tax credits: Employees offered affordable coverage generally cannot receive premium tax credits for Marketplace coverage
  • Employer penalty exposure: Employers who fail to offer affordable coverage may face penalty assessments
  • Line 15 and 16 reporting: The employee's share of the premium and applicable safe harbors must be reported accurately

Because employers do not know employees' household incomes, the IRS provides safe harbor methods that allow employers to measure affordability based on information they do have: W-2 wages, rate of pay, or the Federal Poverty Line. These safe harbors are reported on Line 16 of Form 1095-C.

Minimum Value Explained

Another essential element of what is 1095-C is the minimum value standard. A health plan meets minimum value if it covers at least 60% of the total allowed cost of benefits expected to be incurred under the plan. Most employer-sponsored health plans meet this standard, but the employer must verify this with their health plan provider or actuary.

Minimum value matters because:

  • Line 14 codes reference it: Codes like 1B through 1E indicate minimum value coverage was offered
  • Penalty exposure depends on it: Offering coverage that does not meet minimum value can trigger employer penalties
  • Employee impacts: Employees may still qualify for premium tax credits if offered coverage lacks minimum value

Safe Harbor Methods for Affordability

The ACA safe harbor methods are a critical component of what is 1095-C reporting. These methods allow employers to demonstrate their coverage is affordable without knowing each employee's actual household income. Three safe harbors are available:

W-2 Wages Safe Harbor (Code 2F):

  • Coverage is affordable if the employee's cost does not exceed 9.02% of their W-2 Box 1 wages
  • Determined at year-end based on actual W-2 amounts
  • Most commonly used safe harbor for salaried employees

Rate of Pay Safe Harbor (Code 2G):

  • For hourly employees: coverage is affordable if the monthly cost does not exceed 9.02% of 130 times the hourly rate of pay
  • For salaried employees: coverage is affordable if the monthly cost does not exceed 9.02% of monthly salary
  • Allows employers to determine affordability prospectively using rate of pay at start of coverage period

Federal Poverty Line Safe Harbor (Code 2H):

  • Coverage is affordable if the monthly cost does not exceed 9.02% of the federal poverty line for a single individual divided by 12
  • For 2025, the mainland FPL for one person is $15,060, so the monthly safe harbor amount is approximately $113.20
  • Provides a uniform standard regardless of employee wages

Form 1095-C Deadlines: When to File and Furnish

Deadline to Furnish Forms to Employees

Understanding what is 1095-C includes knowing when the form must be delivered to employees. For tax year 2025, the deadline to furnish Form 1095-C to employees is March 3, 2026. This deadline has been extended from the statutory January 31 date through regulatory relief the IRS has consistently provided in recent years.

Key points about the employee furnishing deadline:

  • Postmark date counts: For mailed forms, the postmark date determines timeliness
  • Electronic delivery allowed: With proper employee consent, forms can be furnished electronically
  • No automatic extension: Unlike the IRS filing deadline, there is no automatic extension for furnishing to employees
  • Separate from IRS filing: This deadline is independent of when forms are due to the IRS

For detailed guidance on delivering forms to employees, see our complete guide on when 1095-C forms are due to employees.

Deadline to File with the IRS

The IRS filing deadline for what is 1095-C is March 31, 2026 for tax year 2025 forms filed electronically. Paper filing (available only to employers with fewer than 10 forms to file) has an earlier deadline of February 28. However, the IRS mandates electronic filing for any employer filing 10 or more information returns, which covers nearly all ALEs.

Filing deadline summary:

Filing Method Deadline (TY2025) Who Can Use
Electronic (AIR System) March 31, 2026 All filers (mandatory for 10+ forms)
Paper February 28, 2026 Only filers with fewer than 10 forms

Employers can request an automatic 30-day extension using Form 8809, which extends the IRS filing deadline to April 30. This extension does not extend the deadline to furnish forms to employees. See our ACA extension guide for more details.

State Filing Deadlines

Beyond the federal requirements, understanding what is 1095-C includes awareness of state-level mandates. Several states have enacted their own individual health insurance mandates and require employers to submit ACA information directly to state agencies:

  • California: State filing required with the Franchise Tax Board
  • New Jersey: State filing required with the Division of Taxation
  • Rhode Island: State filing required with the Division of Taxation
  • District of Columbia: State filing required with the Office of Tax and Revenue
  • Massachusetts: Uses different state forms (1099-HC) with January 31 deadline

State deadlines generally align with federal deadlines, but employers should verify requirements for each state where they have employees.

Penalties for Non-Compliance

Penalties for Failure to File or Furnish Form 1095-C

The IRS imposes significant penalties for failure to properly file or furnish what is 1095-C. These penalties are assessed per form and can accumulate quickly for large employers:

Timing of Correction Penalty Per Form (2025) Maximum (Large Employers)
Corrected within 30 days $60 $630,500
Corrected by August 1 $130 $1,891,500
Not corrected by August 1 $330 $3,783,000
Intentional disregard $660+ (no cap) Unlimited

These penalties apply separately to both the filing requirement (submitting to the IRS) and the furnishing requirement (providing to employees). An employer who fails to do both could face double the penalties shown above.

Employer Shared Responsibility Penalty

Beyond reporting penalties, understanding what is 1095-C involves recognizing its connection to the employer shared responsibility penalty (ESRP). This is a separate penalty assessed on ALEs that either fail to offer coverage to substantially all full-time employees (Penalty A) or offer coverage that is unaffordable or lacks minimum value (Penalty B).

Penalty amounts for 2025:

  • Penalty A (4980H(a)): Approximately $2,900 per full-time employee (minus 30) if coverage is not offered to at least 95% of full-time employees
  • Penalty B (4980H(b)): Approximately $4,350 per full-time employee who receives premium tax credits because the employer's coverage was unaffordable or lacked minimum value

Form 1095-C data is used to determine whether these penalties apply. Employers who receive Letter 226-J from the IRS can respond using their 1095-C records to contest proposed penalties.

Form 1095-C vs. Form 1095-B: Understanding the Difference

Key Differences Between the Forms

A common point of confusion when learning what is 1095-C is understanding how it differs from Form 1095-B. While both forms report health coverage information, they serve different purposes and are filed by different entities:

Characteristic Form 1095-C Form 1095-B
Who Files Applicable Large Employers (50+ employees) Insurance companies, government programs, small self-insured employers
Purpose Report offers of coverage and enrollment (employer mandate compliance) Report actual enrollment in minimum essential coverage
Who Receives Full-time employees of ALEs Anyone enrolled in covered health plan
Transmittal Form Form 1094-C Form 1094-B
Parts of Form Part I (ID), Part II (offers), Part III (coverage for self-insured) Part I (responsible entity), Part II (employer if applicable), Part III (covered individuals), Part IV (coverage months)

For comprehensive comparison, see our detailed guide on 1095-B vs. 1095-C differences.

When Both Forms Apply

In some scenarios, an employee may receive both forms. This happens when:

  • Fully-insured ALE: The employer files 1095-C to report the offer of coverage, and the insurance company files 1095-B to report actual enrollment. The employer leaves Part III of 1095-C blank.
  • Employee has multiple coverage sources: An employee might receive 1095-C from their employer and 1095-B from another source (such as a spouse's small employer plan, government program, or individual coverage).

For self-insured ALEs, Form 1095-C includes enrollment information in Part III, so no separate 1095-B is needed. The 1095-C serves both purposes—documenting the offer and the actual coverage.

How to Complete Form 1095-C: Step-by-Step Guidance

Gathering Required Information

Before completing what is 1095-C, employers must gather comprehensive data. The accuracy of Form 1095-C depends on having complete and verified information:

Employee information needed:

  • Full legal name matching Social Security records
  • Social Security Number (or date of birth if SSN unavailable after reasonable effort)
  • Current mailing address
  • Full-time status for each month of the year

Coverage information needed:

  • What coverage was offered each month
  • Employee's monthly share of the lowest-cost self-only coverage
  • Which safe harbor applies for affordability
  • Whether employee enrolled in coverage
  • Covered dependents and their SSNs (for self-insured plans)

Completing Part I

Enter the employee and employer identification information exactly as it appears in IRS and Social Security Administration records. Common errors to avoid:

  • Name/SSN mismatches: Verify the employee's name matches their Social Security card
  • Address accuracy: Use current address, especially for terminated employees
  • EIN verification: Confirm the correct EIN for the specific ALE member (important for controlled groups)

Completing Part II

Part II requires selecting the appropriate codes for Lines 14, 15, and 16. This is where most errors occur, so careful attention is required:

Line 14 tips:

  • Select the code that most accurately describes the coverage offered that month
  • Use 1H for months when no coverage was offered
  • Consider codes like 1G for non-full-time employees enrolled in self-insured coverage

Line 15 tips:

  • Enter the employee's monthly share of the lowest-cost self-only minimum value coverage
  • Leave blank if Line 14 is 1A (qualifying offer with affordability built in)
  • Leave blank for months using codes 1G or 1H

Line 16 tips:

  • Select the appropriate safe harbor or other code
  • Common codes include 2C (enrolled in coverage), 2F (W-2 safe harbor), 2G (rate of pay safe harbor), 2H (FPL safe harbor)
  • Use 2A for non-full-time employee months

Completing Part III (Self-Insured Plans Only)

For self-insured employers, Part III lists all covered individuals:

  • Enter the employee's name and SSN first
  • List each dependent or other covered individual
  • Check the boxes for each month of actual coverage
  • Leave this section blank if the employer has fully-insured coverage

Common Mistakes and How to Avoid Them

Frequent Form 1095-C Errors

Understanding what is 1095-C includes knowing the common pitfalls that cause rejections and penalty notices:

Data accuracy errors:

  • Incorrect SSNs: Mistyped or unverified Social Security Numbers cause IRS rejections
  • Name mismatches: Legal name must match SSA records exactly
  • Wrong EIN: Using parent company EIN instead of the specific ALE member's EIN

Coding errors:

  • Wrong Line 14 code: Using codes that do not match the actual offer made
  • Missing Line 15 amounts: Failing to enter premium amounts when required
  • Inconsistent safe harbor codes: Using different safe harbors inconsistently within the same employee's form
  • Part III errors: Self-insured employers leaving Part III blank or entering incorrect coverage months

Process errors:

  • Missing employees: Failing to issue forms to all full-time employees, including terminated employees
  • Late filing: Missing the March 31 IRS deadline or March 3 employee furnishing deadline
  • No Form 1094-C: Submitting 1095-C forms without the required Form 1094-C transmittal

How to Correct Errors

If errors are discovered after filing what is 1095-C, corrections should be filed promptly. The correction process varies based on the type of error:

  • Employee information corrections: File a corrected 1095-C with the "Corrected" checkbox marked
  • Coverage information corrections: File corrected forms for the affected months
  • Forms filed for wrong employees: File a void form and a new form for the correct employee

Correcting errors quickly minimizes penalty exposure. The sooner corrections are filed, the lower the per-form penalty amount.

Frequently Asked Questions About Form 1095-C

What is Form 1095-C used for?

Form 1095-C is used by Applicable Large Employers to report health coverage information to the IRS and employees as required by the Affordable Care Act. It documents whether the employer offered minimum essential coverage, whether the coverage was affordable and met minimum value standards, and whether employees enrolled. This information helps the IRS enforce the employer mandate and determine employee eligibility for premium tax credits.

Do I need Form 1095-C to file my taxes?

No, you generally do not need Form 1095-C to file your personal income tax return. The IRS has stated that taxpayers should not wait for the form before filing. The form documents your employer's health coverage offer and is primarily used for IRS verification purposes. However, you should keep the form for your records in case of questions about your coverage.

Who must file Form 1095-C?

Applicable Large Employers (ALEs) must file Form 1095-C. An ALE is an employer that employed an average of at least 50 full-time employees (including full-time equivalent employees) during the prior calendar year. All related employers under common ownership are combined for the 50-employee threshold, but each separate employer entity files its own forms.

What is the difference between Form 1095-C and 1095-B?

Form 1095-C is filed by large employers to report offers of health coverage to full-time employees. Form 1095-B is filed by insurance companies, small self-insured employers, and government programs to report actual enrollment in minimum essential coverage. Some employees may receive both forms depending on their coverage sources.

When is Form 1095-C due to employees?

For tax year 2025, Form 1095-C must be furnished to employees by March 3, 2026. This deadline is extended from the statutory January 31 date through IRS regulatory relief. Employers can deliver forms by mail (postmark date determines timeliness) or electronically with proper employee consent.

When is Form 1095-C due to the IRS?

For tax year 2025, Form 1095-C must be filed with the IRS by March 31, 2026 (electronic filing) or February 28, 2026 (paper filing, which is only available for filers with fewer than 10 forms). Employers can request an automatic 30-day extension using Form 8809.

What are the penalties for not filing Form 1095-C?

Penalties for failing to file or furnish Form 1095-C range from $60 per form (if corrected within 30 days) to $330 per form (if not corrected by August 1). Maximum annual penalties range from $630,500 to $3,783,000 for large employers. Intentional disregard carries penalties of $660 or more per form with no cap.

What codes go on Line 14 of Form 1095-C?

Line 14 uses codes to describe the coverage offered. Common codes include 1A (qualifying offer), 1B (minimum value to employee only), 1C (to employee and dependents), 1E (to employee, spouse, and dependents), and 1H (no offer). The correct code depends on what coverage was offered and to whom.

What is Part III of Form 1095-C for?

Part III is only completed by employers with self-insured health plans. It lists all individuals actually enrolled in the employer's health coverage, including the employee and dependents, with their SSNs and months of coverage. Employers with fully-insured plans leave Part III blank because the insurance company reports this information on Form 1095-B.

Can Form 1095-C be filed electronically?

Yes, Form 1095-C must be filed electronically through the IRS AIR (ACA Information Returns) system if you are filing 10 or more forms. Since virtually all ALEs have more than 10 full-time employees, electronic filing is mandatory for most employers. Third-party software or services like BoomTax can handle electronic submission.

What if my Form 1095-C has errors?

If you discover errors on a Form 1095-C after filing, you should file corrected forms as soon as possible. Check the "Corrected" box on the form, enter the correct information, and resubmit. Correcting errors quickly reduces penalty amounts. Work with your ACA compliance provider to ensure corrections are properly formatted and transmitted.

Do part-time employees receive Form 1095-C?

Generally, no. Form 1095-C is only required for employees who were full-time (averaging 30+ hours per week) for at least one month during the tax year. Part-time employees who never achieved full-time status do not receive Form 1095-C. However, part-time employees enrolled in a self-insured plan may be listed on Part III of a full-time employee's form or receive their own form with code 1G.

How BoomTax Simplifies Form 1095-C Filing

Understanding what is 1095-C is one thing—completing and filing the form accurately and on time is another. BoomTax provides a comprehensive solution that simplifies every aspect of Form 1095-C compliance:

  • Bulk Data Import: Upload employee and coverage data from Excel, CSV, or integrate with payroll systems like ADP, Workday, UKG, and Paylocity. No manual data entry for each form.
  • Automatic Validation: BoomTax checks your data against 500+ IRS business rules before filing, catching errors in employee information, coverage codes, and form structure before they cause rejections.
  • Line 14-16 Code Assistance: Built-in guidance helps you select the correct codes for offers of coverage, premium amounts, and safe harbors.
  • IRS E-Filing: File directly with the IRS through the AIR system. BoomTax is an authorized transmitter—no need to obtain your own Transmitter Control Code or navigate IRS systems yourself.
  • Print and Mail Services: BoomTax handles printing, stuffing, and mailing employee copies with first-class postage through our HIPAA-compliant facility. Tracking included.
  • Electronic Delivery: For employees who consent, deliver forms electronically through a secure portal with automatic notification and consent management.
  • State Filing Support: File with California, New Jersey, Rhode Island, D.C., and Massachusetts from the same platform.
  • Unlimited Corrections: If errors are discovered after filing, correct and refile at no additional charge. BoomTax includes free unlimited corrections for all filings.
  • Multi-EIN Support: Manage filings for multiple employer entities (important for controlled groups) from a single account. Ideal for service providers managing client filings.

BoomTax offers transparent pay-per-form pricing with no subscription fees. Whether you're an employer with 50 employees or a service provider managing thousands of forms across multiple clients, the platform scales to your needs.

Ready to simplify your Form 1095-C filing? Get started with BoomTax today and eliminate ACA reporting stress.

Conclusion: Mastering Form 1095-C Compliance

Understanding what is 1095-C is essential for any Applicable Large Employer. This form is the official record of health coverage offers made to full-time employees, serving both as proof of compliance with the ACA employer mandate and as information for the IRS to verify coverage status. From the identification details in Part I to the coverage codes in Part II and the enrollment data in Part III (for self-insured plans), every element of the form contributes to the complete picture of employer health coverage.

Key takeaways about Form 1095-C:

  • Who files: Applicable Large Employers with 50+ full-time employees (including FTEs)
  • Who receives: Every full-time employee for any month during the tax year
  • What it reports: Coverage offers, employee premium share, safe harbors, and (for self-insured) actual enrollment
  • Furnishing deadline: March 3, 2026 for tax year 2025
  • IRS filing deadline: March 31, 2026 for electronic filing (March 31 for tax year 2025)
  • Penalties: $60 to $330+ per form for late or incorrect filing, plus potential employer mandate penalties
  • Difference from 1095-B: 1095-C reports offers by large employers; 1095-B reports enrollment by insurers and small employers

Success with Form 1095-C requires accurate data collection, proper code selection, timely filing, and thorough documentation. Using a specialized platform like BoomTax streamlines the process, ensuring compliance while reducing administrative burden. As ACA reporting requirements continue, mastering what is 1095-C positions employers for penalty-free compliance year after year.

References and Additional Resources

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