COBRA Small Business Requirements: Do Small Employers Have to Offer COBRA?

6/16/2026

If you run a small business, one of the most common—and most misunderstood—benefits compliance questions is whether your company has to offer COBRA continuation coverage. The short answer is that federal COBRA applies only to employers with 20 or more employees, but the full picture is far more nuanced than that single threshold suggests. State mini-COBRA laws, fluctuating headcounts, and the specific rules for how you count employees can all change your obligations overnight.

Understanding COBRA small business requirements isn’t optional. Getting it wrong can expose your organization to excise taxes of $100 per day per affected individual under IRC §4980B, plus lawsuits from employees wrongly denied coverage. This guide breaks down what small employers need to know in 2026.

What Is COBRA and Who Does It Apply To?

The Consolidated Omnibus Budget Reconciliation Act (COBRA) is a federal law enacted in 1986 that gives employees and their dependents the right to temporarily continue their employer-sponsored group health coverage after a qualifying event—such as job loss, reduction in hours, divorce, or death of the covered employee.

COBRA is administered and enforced by the Department of Labor (DOL), the Internal Revenue Service (IRS), and the Department of Health and Human Services (HHS).

The Federal 20-Employee Threshold

Under federal law, COBRA applies to private-sector employers that maintained a group health plan and employed 20 or more employees on at least 50 percent of the typical business days during the preceding calendar year. This threshold is the central factor in determining COBRA small business requirements.

If your business had fewer than 20 employees on more than half of the working days in the prior year, federal COBRA generally does not apply. However, this does not mean you’re free of all continuation coverage obligations—state law may still impose requirements.

Key points about the federal threshold:

• The count includes all common-law employees, whether full-time, part-time, or seasonal
• Each employee counts as one employee regardless of hours worked
• The determination is based on the preceding calendar year
• Self-employed individuals, independent contractors, and corporate directors (who are not also employees) are generally not counted

For a deeper dive into continuation coverage fundamentals, visit our COBRA compliance FAQ page.

How to Count Employees for COBRA Purposes

Accurately counting employees is the single most critical step in determining your COBRA obligations, yet many small employers get it wrong. The federal rules have specific nuances that differ from headcount calculations used for other employment laws like the ACA or FMLA.

The “Typical Business Day” Method

Under the typical business day method, you count the number of employees on your payroll on each working day during the preceding calendar year, then determine whether you had 20 or more employees on at least 50 percent of those days.

Here’s how it works in practice:

1. Identify typical business days. These are days your business is normally open. Weekends and holidays when your business is closed are excluded.
2. Count every employee on each business day. Include anyone on your payroll that day—full-time, part-time, employees on leave, and seasonal workers. Each person counts as one, regardless of hours.
3. Calculate the percentage. Divide the number of days you had 20+ employees by the total number of typical business days. If the result is 50 percent or more, you are a COBRA-covered employer for the following calendar year.

Common Counting Mistakes

Small employers frequently make these errors when assessing their COBRA status:

• Excluding part-time employees. Unlike the ACA’s full-time equivalent (FTE) calculation, COBRA counts every employee as one person. A business with 12 full-time and 8 part-time employees has 20 employees for COBRA purposes.
• Forgetting employees on leave. Workers on FMLA leave, disability leave, or other authorized absences are still on the payroll and must be counted.
• Ignoring related employers. Under the controlled group and affiliated service group rules (IRC §414(b), (c), (m), and (o)), employees of related businesses may need to be aggregated. Two companies with 12 employees each may together constitute a 24-employee employer for COBRA purposes.
• Miscounting seasonal workers. Temporary staff during a busy season who push you to 20+ employees for more than half of your business days can trigger COBRA obligations the following year.

If you’re unsure whether your organization meets the threshold, our COBRA Training and Certification Program walks through employee-counting scenarios in detail.

What Happens When You Cross the 20-Employee Threshold Mid-Year?

One of the most anxiety-inducing scenarios for growing small businesses is crossing the 20-employee threshold during the year. Does COBRA kick in immediately? Do you need to retroactively offer coverage? The answer depends on timing and the calendar-year measurement period.

Growing Past 20 Employees

If your business grows from 18 employees to 22 during 2026, here’s what to expect:

• 2026: You look at your 2025 headcount to determine your 2026 COBRA status. If you had fewer than 20 employees on more than half of your business days in 2025, federal COBRA does not apply to you in 2026—even if you now have 22 employees.
• 2027: At the start of 2027, you’ll reassess using your 2026 data. If you had 20 or more employees on at least 50 percent of your typical business days in 2026, you will be subject to COBRA for all of 2027.

This lag provides a built-in transition period, but it also means you need to start planning before the new year. Once COBRA applies, you’ll need:

• Updated plan documents and Summary Plan Descriptions (SPDs)
• A COBRA general notice for all covered employees
• Procedures for tracking qualifying events and sending election notices within required timeframes
• A system for collecting and applying COBRA premiums

Shrinking Below 20 Employees

If your headcount drops below 20, the same calendar-year rule applies in reverse. You’ll remain a COBRA-covered employer through the current obligation year, and the following year’s determination will be based on prior-year data. Importantly, individuals already receiving COBRA coverage when you drop below the threshold are still entitled to complete their full coverage period (typically 18 or 36 months).

State Mini-COBRA Laws: Why Small Employers Aren’t Off the Hook

Here’s the critical point that many small business owners miss: even if federal COBRA doesn’t apply to you, your state may have its own continuation coverage law that does. These so-called “mini-COBRA” laws often apply to employers with fewer than 20 employees—sometimes as few as one or two.

As of 2026, approximately 40 states plus the District of Columbia have some form of state continuation coverage law. The specifics vary widely, but they typically impose shorter coverage periods and may have different qualifying events or notice requirements.

Key State Mini-COBRA Laws

Here are some of the most notable state laws that affect small employers:

California (Cal-COBRA) - Applies to employers with 2–19 employees - Provides up to 36 months of continuation coverage - Administered by the California Department of Insurance (for insured plans) and Department of Managed Health Care - Can also extend federal COBRA from 18 months to 36 months for employees of larger employers - Employers must notify their insurance carrier within 30 days of a qualifying event

New York - Applies to employers of any size with group health plans - Provides up to 36 months of continuation coverage - Covers a broader range of qualifying events than federal COBRA - Extends to all insured group health plans, including dental and vision - One of the most expansive state continuation laws in the country

Texas - Applies to employers with 1–19 employees that offer group health insurance - Provides up to 12 months of continuation coverage - Notice must be provided to employees within a specific timeframe after the qualifying event

Illinois - Applies to employers with 2–19 employees - Provides up to 12 months of continuation coverage

Florida - Applies to employers with fewer than 20 employees - Provides up to 18 months of continuation coverage

Oregon - Applies to employers with 1–19 employees - Provides up to 9 months of continuation coverage (insured plans only)

How State Mini-COBRA Differs from Federal COBRA

Feature	Federal COBRA	Typical State Mini-COBRA
Employer size	20+ employees	Often 1–19 employees
Coverage duration	18–36 months	3–36 months (varies by state)
Applies to	Insured and self-funded plans	Usually insured plans only
Enforcement	DOL, IRS, HHS	State insurance departments
Premium allowed	Up to 102% of cost	Varies; often 100–102%

Understanding both federal and state requirements is essential for compliance. For more on continuation coverage obligations and how they interact, see our blog post on COBRA qualifying events every HR professional should know.

Practical Steps for Small Business COBRA Compliance in 2026

Whether you’re subject to federal COBRA, a state mini-COBRA law, or you’re approaching the 20-employee threshold, proactive compliance planning is essential. Here’s a practical checklist:

Step 1: Determine Your Current Status

• Count employees using the typical business day method for the prior calendar year
• Check for controlled group or affiliated service group relationships with related businesses
• Identify your state’s mini-COBRA requirements regardless of your employee count

Step 2: Monitor Your Headcount

• Track employee counts on a monthly or quarterly basis
• Set an internal alert when headcount reaches 16–17 employees to begin COBRA preparation
• Document your headcount records—the burden of proof falls on the employer if COBRA status is disputed

Step 3: Prepare Your COBRA Infrastructure

If you’re approaching or have crossed the threshold:

• Designate a COBRA administrator (internal staff or a third-party administrator)
• Update your group health plan documents to include COBRA provisions
• Create templates for general notices, election notices, and termination notices
• Establish procedures for premium collection, tracking, and grace periods

Step 4: Know Your Notice Deadlines

Under federal COBRA, timing is everything:

• General notice: Must be provided to new employees within 90 days of coverage start
• Election notice: Must be sent within 14 days after the plan administrator is notified of a qualifying event
• Employee obligation: Employees must notify the plan of certain qualifying events (e.g., divorce, dependent aging out) within 60 days
• Election period: Qualified beneficiaries have 60 days to elect COBRA coverage

Step 5: Audit Annually

Conduct an annual COBRA compliance audit at the start of each calendar year. Reassess your employee count, review notice procedures, verify premium rates (no more than 102% of cost), and confirm your state-level obligations are current.

For related compliance topics, explore how FMLA, ADA, and PWFA intersect with benefits administration.

Frequently Asked Questions About COBRA and Small Businesses

Does COBRA apply to a business with fewer than 20 employees? Federal COBRA does not apply to employers that had fewer than 20 employees on at least 50 percent of typical business days in the prior calendar year. However, most states have mini-COBRA laws that impose continuation coverage requirements on smaller employers—some covering businesses with as few as one or two employees.

How do you count employees for COBRA—do part-time workers count? Yes. For federal COBRA purposes, every common-law employee on your payroll counts as one employee, regardless of whether they work full-time or part-time. This differs from the ACA’s full-time equivalent method. Employees on leave are also counted.

If my company grows to 20 employees mid-year, does COBRA apply immediately? No. Federal COBRA status is determined based on the preceding calendar year. If you cross the 20-employee threshold during 2026, your COBRA obligations for 2027 will be determined by whether you had 20+ employees on at least 50 percent of your typical business days in 2026.

What is Cal-COBRA and how does it differ from federal COBRA? Cal-COBRA is California’s state continuation coverage law that applies to employers with 2–19 employees. It provides up to 36 months of continuation coverage through insured health plans. Unlike federal COBRA, it is administered through the state’s insurance regulatory agencies rather than the DOL and IRS.

Get Certified in COBRA Compliance

Navigating COBRA small business requirements—along with state mini-COBRA laws, counting rules, and notice deadlines—requires specialized knowledge beyond general HR training. Whether you administer benefits for a small employer, advise clients as a TPA, or manage a growing company approaching the threshold, getting the details right is essential.

The COBRA Training and Certification Program from HRCertification.com provides comprehensive, practical training in federal COBRA requirements—including qualifying events, notice obligations, premium calculations, and common pitfalls. Earn your certification and handle COBRA administration with confidence.

For third-party administrators, the Certified TPA Designation program demonstrates your proficiency across COBRA, cafeteria plans, and other benefits administration areas.

Don’t wait until a compliance issue forces your hand. Invest in training that keeps your organization—and your employees—protected.