COBRA Insurance Explained: What It Is, What It Costs, and When to Use It

Losing job-based health insurance is one of those situations where people discover they had no idea how much their employer was subsidizing their coverage. COBRA — the law that lets you continue that coverage — is often the first thing people reach for. It's also often the most expensive option available.

Here's what COBRA actually is, what it costs, and whether it makes sense for your situation.

What Is COBRA?

COBRA stands for the Consolidated Omnibus Budget Reconciliation Act — a 1985 federal law that requires most employers to offer continuation of group health coverage to employees and their dependents after certain "qualifying events."

The practical result: if you lose job-based health coverage, you have the right to continue on that same plan for a period of time. Same network, same benefits, same coverage. The difference is that you now pay the full cost — your share plus the employer's contribution — plus a 2% administrative fee.

Who Is COBRA Available To?

COBRA applies to employers with 20 or more employees who offer group health plans. Smaller employers may be subject to state mini-COBRA laws with similar requirements.

Qualifying events that trigger COBRA eligibility:

For employees:

• Voluntary or involuntary job loss (except termination for gross misconduct)
• Reduction in hours that makes you ineligible for employer health benefits

For spouses and dependents:

• Employee loses their job or has reduced hours
• Employee becomes eligible for Medicare
• Divorce or legal separation from the covered employee
• Death of the covered employee

For dependent children:

• Loss of dependent child status under plan rules (typically turning 26)

How Long Does COBRA Last?

• Job loss or reduced hours: Up to 18 months
• Employee death, divorce, Medicare eligibility: Up to 36 months for dependents
• Dependent child losing dependent status: Up to 36 months
• Disability during initial 18-month period: Extension to 29 months

You must elect COBRA within 60 days of receiving notice of your right to elect it. Failure to elect within this window permanently waives your right to COBRA coverage for that qualifying event.

Once you elect, you have 45 days to make your first premium payment, which is retroactive to the date coverage would have ended.

What Does COBRA Cost?

This is where people get a shock.

When you were employed, your employer likely paid 70–85% of your health insurance premium. You paid the remaining 15–30% through payroll deductions.

Under COBRA, you pay 102% of the full premium (your share + employer's share + 2% admin fee).

Example:

• Total monthly premium for your health plan: $600 (single) or $1,800 (family)
• What you paid through payroll: $150/month (single) or $450/month (family)
• What you'll pay on COBRA: $612/month (single) or $1,836/month (family)

For a family, that's over $22,000 per year in health insurance premiums alone. On top of that, you still have your deductible and out-of-pocket costs.

The sticker shock is real. COBRA is often the most expensive health insurance option available to you.

How to Elect COBRA

After a qualifying event, your employer (or their COBRA administrator) must send you a notice within 30–44 days explaining your COBRA rights and how to elect coverage.

You have 60 days from the date of the notice (or the date coverage ended, whichever is later) to elect COBRA. If you elect it, coverage is retroactive — meaning there's no gap. You can use healthcare services during the election window, and if you elect and pay, those bills are covered.

This retroactive feature creates an interesting strategy: you can wait to see if you actually need healthcare in the 60-day window. If you have a medical emergency, elect COBRA and pay the premiums. If you stay healthy, enroll in a marketplace plan and skip COBRA.

Important: When COBRA ends, that's a qualifying event that opens a special enrollment period for marketplace plans. Keep that timing in mind.

COBRA vs. Marketplace (ACA) Plans

For most people who lose job-based coverage, ACA marketplace plans are worth comparing to COBRA before automatically choosing continuation coverage.

Losing job-based health coverage is a qualifying life event that triggers a Special Enrollment Period. You have 60 days to enroll in a marketplace plan.

Why marketplace plans may be better:

• Premium tax credits can dramatically reduce marketplace plan costs for people with moderate incomes
• Premium tax credits are income-based — if you've lost income, you may qualify for significant subsidies
• Some lower-income individuals qualify for Medicaid
• You can choose a different plan rather than being stuck with your former employer's plan

When COBRA may be better:

• You need to see specific doctors or specialists who are in your current plan's network but not in marketplace plan networks
• You're mid-deductible-year and have already spent significantly toward your deductible
• You have a major procedure scheduled and don't want to deal with a network change
• You have complex ongoing healthcare needs and continuity matters more than cost
• You expect to return to employment with benefits in a few months

The Medicaid check: If you've lost significant income, check whether you qualify for Medicaid before paying any COBRA premiums. Medicaid is free or very low cost, and enrollment can happen any time of year.

The Coverage Gap Strategy

Because COBRA is retroactive when elected within 60 days, some people use it only as a safety net:

1. Lose job-based coverage
2. Start shopping for marketplace plans immediately
3. During the 60-day window, if you stay healthy: enroll in marketplace coverage
4. If you have a major medical need in that 60-day window: elect COBRA retroactively, pay the premiums, and use the coverage

This approach eliminates premiums for months you don't use healthcare while preserving coverage access for emergencies. It's a legitimate strategy, but requires you to be genuinely prepared to elect COBRA quickly if something happens.

When You Leave COBRA

COBRA coverage ends when:

• The maximum continuation period expires (18 or 36 months)
• You fail to make premium payments (there's typically a 30-day grace period)
• You become covered under another group health plan
• You become eligible for Medicare

When COBRA ends, it's another qualifying life event, triggering a new 60-day Special Enrollment Period for marketplace coverage.

State Mini-COBRA Laws

If your employer has fewer than 20 employees, federal COBRA doesn't apply. However, many states have "mini-COBRA" laws that provide similar continuation rights for smaller employer plans. These vary by state in terms of duration and requirements. Check your state insurance commissioner's website for details.

The Bottom Line

COBRA's main value is continuity — you keep the same plan, same network, same coverage. That continuity has real value if you're mid-treatment or have complex healthcare needs.

But continuity comes at a price that shocks most people who see the COBRA bill for the first time. Before defaulting to COBRA, spend 30 minutes on healthcare.gov checking marketplace plans and whether you qualify for premium tax credits. For many people who've recently lost income, a subsidized marketplace plan will cost less than COBRA and provide comparable coverage.

The 60-day election window is your friend. Use the time to compare your options carefully before committing to COBRA premiums.