How to Cancel Health Insurance Without Losing Coverage

To cancel health insurance, the path depends on what kind of plan you have: employer coverage goes through your HR department, a Marketplace plan is canceled inside your HealthCare.gov account, a private policy is canceled through the insurer directly, and Medicare requires a specific form filed with Social Security. Before you do any of it, confirm the exact start date of your replacement coverage. The cancellation itself is usually simple. The expensive mistakes happen around it.

Line Up Your Next Coverage First

Know exactly when your new coverage starts before you end the old one. If your current plan ends March 31 and your new plan starts May 1, you have a 30-day gap in which a single emergency room visit could cost thousands. Most plans won’t retroactively cover care received during a gap, so even a few days of overlap is worth the extra premium.

Timing also controls whether you can get a new plan at all. If you’re moving to a Marketplace plan, you can only enroll during Open Enrollment (November 1 through January 15 for the 2026 plan year) or during a Special Enrollment Period triggered by a qualifying life event such as marriage, losing other coverage, or having a baby.¹ Cancel outside those windows without a qualifying event, and you could be uninsured until the next Open Enrollment with no way back in.²

If your plan covers a spouse or children, canceling ends their coverage too. Make sure everyone on the policy has a path to new coverage before you submit anything.

Canceling an Employer-Sponsored Plan

You generally can’t call the insurance company to cancel employer coverage. The request goes through your HR department. Most employers only allow mid-year cancellations if you experience a qualifying life event such as getting married, having a child, or gaining coverage through a spouse’s employer. Otherwise you typically have to wait for your company’s annual open enrollment period.

The process usually involves a benefits change form and an acknowledgment that you understand you’re ending coverage for any dependents on the plan. Timing of the request determines whether one more premium deduction goes through before coverage ends. Some employers terminate coverage the day you file; others align it with the end of the month or the billing cycle. Ask HR for the exact termination date in writing.

If you’re leaving the job, coverage typically runs through your last day of employment or the end of that month, depending on company policy. If the employer has 20 or more employees, it’s required to notify you about COBRA continuation coverage.³

COBRA as a Bridge

COBRA lets you stay on the former employer’s group plan temporarily after job loss, reduced hours, divorce, a covered employee’s death, or a dependent aging out. Federal COBRA applies to employers with 20 or more employees; roughly two-thirds of states have “mini-COBRA” laws covering smaller employers, though terms vary.

You have 60 days after the qualifying event to elect COBRA, and coverage is retroactive to the day your employer plan ended, so there’s no gap. The catch is cost. You pay both your former share and the employer’s share, plus up to a 2% administrative fee, for a maximum of 102% of the plan’s total cost. Coverage lasts up to 18 months for job loss or reduced hours, and up to 36 months for dependents after events like divorce or a covered employee’s death.⁴ Losing employer coverage also opens a Marketplace Special Enrollment Period, so compare COBRA against a Marketplace plan before you commit.

Canceling a Marketplace (ACA) Plan

Log into your HealthCare.gov account (or your state marketplace account) and end coverage there. You cannot cancel by calling the insurance company; the cancellation has to go through the Marketplace.¹ You’ll choose an end date when you submit. Don’t pick a date earlier than your new plan’s confirmed start date.

If you received advance premium tax credits during the year, canceling mid-year still leaves you with a tax obligation. You must file Form 8962 to reconcile the credits you received against what you actually qualified for based on your annual income. If your income ended up higher than estimated, you’ll owe back some or all of the excess. Skip the reconciliation entirely, and you won’t be eligible for subsidies the following year.⁵

Once you cancel, you generally can’t re-enroll until the next Open Enrollment Period unless you qualify for a Special Enrollment Period.

Canceling a Private or Short-Term Plan

Private coverage bought directly from an insurer follows that insurer’s process. Most accept cancellations online, by phone, or in writing. You’ll need your policy number and a requested termination date. Some cancellations process immediately; others require 30 days’ notice before coverage and billing stop.

If you’ve prepaid premiums, the insurer’s refund policy controls whether you get unused money back. Some prorate from the cancellation date; others keep the full payment once a billing cycle starts. If you’re on autopay, verify that future deductions actually stop. Check your bank statements for at least two billing cycles after cancellation.

Short-term plans deserve a closer read. Under federal rules finalized in 2024, new short-term plans are limited to an initial term of no more than 3 months, with total duration (including renewals) capped at 4 months.⁶ These plans don’t follow ACA rules and may not offer prorated refunds if you cancel mid-term. Read the contract before you cancel to see what you forfeit.

Canceling Medicaid

Medicaid has no open enrollment period, so you can cancel any time. The process varies by state: some require a written request to the state Medicaid office, others accept disenrollment through an online portal or a local benefits office. Contact your state’s Medicaid agency for the specific steps. Losing Medicaid, whether by choice or through a change in eligibility, qualifies you for a Marketplace Special Enrollment Period.

Canceling Medicare

Medicare has the most structured cancellation process, and the consequences of dropping it can follow you for life.

Medicare Advantage and Part D

To leave a Medicare Advantage plan or a standalone Part D drug plan, you’re limited to specific windows. The Annual Election Period runs October 15 through December 7, with changes effective January 1. The Medicare Advantage Open Enrollment Period runs January 1 through March 31 and lets you switch Advantage plans or drop back to Original Medicare.⁷ Outside these windows, disenrollment is only permitted under limited circumstances.⁸

Original Medicare

To voluntarily terminate premium Part A or Part B, submit Form CMS-1763 to your local Social Security office.⁹ You can mail it or visit an SSA office in person; the agency will walk you through the consequences before you sign.¹⁰

You can generally only drop Part A if you pay a premium for it. Most people qualify for premium-free Part A based on work history and cannot opt out.¹¹ If you do pay a Part A premium, dropping Part B automatically terminates Part A too.

The Late Enrollment Penalties Are Permanent

Disenroll from Part B and re-enroll later, and you’ll face a late enrollment penalty of 10% added to your monthly premium for every full 12-month period you went without coverage. The standard Part B premium in 2026 is $202.90 per month, and the penalty is added to that amount for as long as you have Part B.¹²

Part D works similarly. Go 63 or more consecutive days without creditable drug coverage, and when you re-enroll you’ll pay an extra 1% of the national base beneficiary premium ($38.99 in 2026) for every month you lacked coverage, added permanently to your Part D premium.¹² A two-year gap adds roughly $9.36 per month, every month, for as long as you have drug coverage.

What Happens to Your HSA or FSA

An HSA belongs to you. The balance stays yours, and you can keep spending it on qualified medical expenses after your high-deductible health plan ends.¹³ What changes is your ability to contribute. HSA contributions require HDHP coverage on the first day of the month, so once that coverage ends you must stop contributing for any month you lack it. The 2026 contribution limits are $4,400 for self-only coverage and $8,750 for family coverage.¹⁴

If you used the last-month rule to contribute a full year’s amount based on having HDHP coverage on December 1, you must maintain that HDHP coverage through the following December 31. Drop coverage during that testing period, and the excess contribution becomes taxable income plus a 10% penalty.¹³

An FSA is different. It’s employer-owned, and when your coverage ends you generally lose access to any unspent balance. If you know cancellation is coming, spend down your FSA on eligible expenses before the termination date. If you leave mid-year having spent more than you’ve contributed, your employer can’t recover the difference.

State Tax Penalties for Going Uninsured

The federal individual mandate penalty has been $0 since 2019, so the IRS won’t charge you for being uninsured. Several states and the District of Columbia still do. As of 2025, California, Massachusetts, New Jersey, and Rhode Island each enforce state-level individual mandates with tax penalties that vary by state. If you live in one of them, canceling without replacing coverage will cost you at tax time.

Get Written Confirmation and Watch Your Bank Account

After you cancel, get written confirmation of the termination date and keep it. Most insurers send a letter or email stating the exact date coverage ended and any final financial obligations. That document is your proof if the insurer keeps billing you, if a new insurer questions your coverage history, or if you need to document a qualifying life event for a Special Enrollment Period.

Check your bank or credit card statements for at least two full billing cycles after the stated cancellation date. Autopay doesn’t always stop cleanly, and disputing an erroneous charge is much easier with a confirmation letter in hand. For a Marketplace plan, also verify in your HealthCare.gov account that the plan status shows as terminated; the account dashboard is the definitive record for subsidy and enrollment purposes.

1
HealthCare.gov. How Do I Cancel My Marketplace Plan
2
HealthCare.gov. Getting Health Coverage Outside Open Enrollment – Section: Special Enrollment Periods
3
U.S. Department of Labor. Continuation of Health Coverage (COBRA)
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U.S. Department of Labor. FAQs on COBRA Continuation Health Coverage for Workers
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Internal Revenue Service. Reconciling Your Advance Payments of the Premium Tax Credit
6
Federal Register. Short-Term, Limited-Duration Insurance and Independent, Noncoordinated Excepted Benefits Coverage
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Medicare.gov. Understanding Medicare Advantage and Medicare Drug Plan Enrollment Periods
8
Centers for Medicare & Medicaid Services. CY 2025 CD Enrollment and Disenrollment Guidance – Section: 30 Election Periods and Effective Dates
9
Centers for Medicare & Medicaid Services. Form CMS-1763 – Request for Termination of Premium Part A, Part B, or Part B Immunosuppressive Drug Coverage
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Centers for Medicare & Medicaid Services. Supporting Statement Part A – Request for Termination of Premium Hospital and/or Supplementary Medical Insurance
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Medicare.gov. How to Drop Part A and Part B
12
Medicare.gov. Avoid Late Enrollment Penalties
13
Internal Revenue Service. Publication 969 (2025) – Health Savings Accounts and Other Tax-Favored Health Plans
14
Internal Revenue Service. IRS Notice 2026-05 – HSA Contribution Limits