To cancel COBRA insurance, either send a written cancellation request to your plan administrator specifying an end date or stop paying premiums and let the 30-day grace period run out. Both work. The bigger decision is when to do it, because voluntarily dropping COBRA does not open a special enrollment period for a marketplace plan, and once you cancel, you cannot re-enroll.
Line Up Your Next Coverage First
This is where most people get burned. Losing your job triggers a special enrollment period for marketplace plans. Voluntarily canceling COBRA does not. If you drop COBRA outside the marketplace’s annual open enrollment window, you generally cannot buy a marketplace plan until open enrollment comes around again, typically November through mid-January.1Centers for Medicare & Medicaid Services. Transitioning from Employer-Sponsored Coverage to Other Health Coverage
The distinction is between voluntary cancellation and exhaustion. When your COBRA maximum period runs out on its own, that counts as an involuntary loss of coverage and does trigger a 60-day special enrollment period.2HealthCare.gov. See Your Options If You Lose Job-Based Health Insurance Choosing to drop COBRA early, by written notice or by skipping a payment, does not.
Two windows let you switch cleanly. The first is the initial 60 days after your qualifying event. Many people elect COBRA right after a job loss without realizing they had that whole window to compare it against marketplace options; if you’re still inside it, you can drop COBRA and enroll in a marketplace plan.1Centers for Medicare & Medicaid Services. Transitioning from Employer-Sponsored Coverage to Other Health Coverage The second is annual open enrollment: keep paying COBRA premiums until it opens, then switch for the following year.
Starting a new job is the third clean exit. Most employers give new hires 30 to 60 days to enroll in benefits.3U.S. Department of Labor. FAQs on COBRA Continuation Health Coverage for Workers If there’s a waiting period before the new plan starts, you may want to keep COBRA running until the new coverage takes effect so you don’t create a gap.
COBRA Blocks Marketplace Subsidies
While you’re enrolled in COBRA, the IRS treats it as minimum essential coverage, which makes you ineligible for premium tax credits on a marketplace plan.4Office of the Law Revision Counsel. 26 U.S. Code 36B – Refundable Credit for Coverage Under a Qualified Health Plan You have to actually drop COBRA before subsidies become available. Being offered COBRA without electing it does not block subsidy eligibility; the disqualification applies only to people who enrolled.
Cancellation Is Permanent
Once you voluntarily end COBRA, you cannot restart it. There is no federal provision letting you re-enroll after canceling or letting a payment lapse. The one narrow exception is the initial election period: if you first waived COBRA, you can revoke the waiver and elect coverage, but only before the election period expires.5eCFR. 26 CFR 54.4980B-6 – Electing COBRA Continuation Coverage After you’ve been paying premiums and then stop, that door closes. Treat the decision as final.
Send a Written Cancellation Request
A formal written cancellation gives you a specific end date and a paper trail. Federal COBRA law doesn’t require a formal cancellation process, but most plan administrators accept and prefer written requests because they reduce confusion about coverage dates.
Include the following in your letter:
- Full name, COBRA policy or group number, and Social Security number or employee ID if applicable.
- The specific date you want coverage to end, ideally aligned with the start date of your new coverage.
- The names of any dependents on the plan, so their coverage terminates at the same time.
Check your COBRA election notice or contact the administrator for where to send it. Some accept email or fax; others require a mailed letter or a specific form. If you mail it, use certified mail with a return receipt. For electronic submissions, save the confirmation email or a screenshot. Attaching a copy of your most recent premium statement or election notice helps the administrator locate your account. If you don’t hear back within 10 business days, call and document the conversation, including the name of the person you spoke with and the date.
Stop Paying Premiums
The simpler method is to stop making payments. Federal law requires plans to give you a minimum 30-day grace period for each premium after the initial one. If the plan doesn’t receive full payment by the end of that grace period, it can terminate your coverage.6U.S. Department of Labor. FAQs on COBRA Continuation Health Coverage for Employers and Advisers
This works, but your exact termination date depends on when the administrator processes the lapse, which creates uncertainty if you later need to prove when coverage ended. Some administrators may try to collect unpaid premiums for the grace-period weeks you were technically still covered. Stopping payment makes the most sense when new coverage is already in place and you just need COBRA to wind down. When timing precision matters, a written cancellation gives you more control.
What Happens to Premiums You’ve Already Paid
COBRA premiums are prepaid monthly. If you cancel partway through a billing period, most administrators will not prorate the premium or issue a partial refund. Your coverage runs through the end of the period you already paid for, and that’s the effective termination date regardless of when you submitted your request.
Federal COBRA regulations are silent on mid-month refunds, which means the plan’s own terms control. Some administrators will honor a specific termination date if you request one, but this is a courtesy rather than a right. Refunds for a fully unused period are also uncommon; you can request one, but approval varies by plan and processing can take several weeks.
Get Written Confirmation the Coverage Ended
Whether you canceled formally or stopped paying, get written proof the coverage has ended. A termination confirmation letter or email from the administrator prevents future billing and, in some cases, satisfies a new insurer that needs proof your prior coverage ended before activating the new policy.
Some administrators send a termination notice automatically; many don’t. If nothing arrives within two weeks of your expected termination date, contact the administrator and request documentation in writing. An email is fine. What matters is having something that shows the termination date, your name, and the plan identifier. Keep the documentation for at least a year, because coverage disputes sometimes surface months later.
If You Contributed to an HSA
If your COBRA plan was a high-deductible health plan and you contributed to a Health Savings Account, canceling can affect your HSA eligibility. You can only contribute to an HSA during months when you’re covered by a qualifying HDHP with no disqualifying coverage.7IRS. Expanded Availability of Health Savings Accounts under the One, Big, Beautiful Bill Act (OBBBA) Notice 2026-5
If your new plan isn’t an HDHP, your HSA contribution eligibility stops the month after your HDHP coverage ends. For 2026, the annual HSA contribution limit is $4,400 for self-only coverage and $8,750 for family coverage. Prorate your contribution to the months you were actually covered by a qualifying HDHP.7IRS. Expanded Availability of Health Savings Accounts under the One, Big, Beautiful Bill Act (OBBBA) Notice 2026-5
Money already in the HSA stays yours regardless of what plan you switch to, and you can still spend it on qualified medical expenses. You just can’t add new contributions while you lack qualifying coverage.
A Note on Who Federal COBRA Covers
Federal COBRA applies only to group health plans maintained by private-sector employers that had at least 20 employees on more than half of their typical business days in the prior calendar year.8Office of the Law Revision Counsel. 26 U.S. Code 4980B – Failure to Satisfy Continuation Coverage Requirements of Group Health Plans If your former employer had fewer than 20 employees, federal COBRA doesn’t apply. Roughly 40 states have their own continuation laws, often called “mini-COBRA,” and cancellation procedures under those laws vary. Check your state’s rules if your coverage runs under state continuation instead of federal COBRA.
The Sequence That Protects You
Identify your next coverage source first and confirm its enrollment dates. If you’re moving to a marketplace plan, wait for either the exhaustion of your COBRA maximum period or the next open enrollment window. If you’re starting a new job, confirm when the employer’s benefits begin. Once the new start date is locked in, submit a written cancellation timed so there’s no gap. Request confirmation in writing. Adjust any HSA contributions to reflect the months you were covered by a qualifying plan. Keep the termination documentation for at least a year.
Getting the sequence right means you avoid paying double premiums, don’t accidentally lose access to marketplace subsidies, and don’t find yourself uninsured with no way to buy coverage until the next enrollment window opens.