Health insurance after resignation is usually valid either through your last day of work or through the end of the calendar month in which you resign, depending on your employer’s plan. From there, federal law lets you extend that same group coverage for up to 18 months under COBRA at your own expense, or switch to an ACA Marketplace plan within 60 days of losing job-based coverage.
When Employer Coverage Actually Ends
No single federal rule sets the exact day your benefits stop. Employers use one of two approaches, and the one that applies to you depends on the terms negotiated with the insurance carrier.
The first approach cuts coverage at midnight on your last day of active employment. If your final day is a Wednesday, you wake up Thursday uninsured. The second approach runs coverage through the last day of the calendar month in which you resign, so a March 5th resignation keeps your plan active through March 31st.
The gap between those two outcomes can be weeks of coverage or none at all. Find your Summary Plan Description and look for the “Termination of Coverage” or “Loss of Eligibility” section, which spells out the exact rule.1U.S. Department of Labor. ERISA HR is required to provide the SPD if you don’t have one. Confirm your official last day in writing and ask when the COBRA election packet will be sent before you leave.
If you have flexibility on timing, resigning early in the month under a month-end termination policy gives you the longest runway before you need new coverage.
Keeping Your Plan Through COBRA
The Consolidated Omnibus Budget Reconciliation Act gives you the right to keep your employer’s group health plan after a voluntary resignation. Resignation counts as a “qualifying event,” which entitles you to up to 18 months of continued coverage identical to what active employees receive.2Office of the Law Revision Counsel. 29 USC 1162 – Continuation Coverage If the employer changes the plan for current workers, your COBRA plan changes the same way.
COBRA applies to employers with 20 or more employees.3Office of the Law Revision Counsel. 29 USC 1161 – Plans Must Provide Continuation Coverage to Certain Individuals If your employer is smaller, your state may have a “mini-COBRA” law with similar protections; about 40 states and Washington, D.C. have them, with durations ranging from as little as three months to the full federal 18.
COBRA covers all the group health benefits you had, not just medical. If you were enrolled in dental or vision, you can continue those too, and you can pick which ones to keep. You cannot add coverage you did not have before.
What COBRA Costs
While you were employed, your employer likely paid 70–80% of your premium. Under COBRA, you pay the full premium plus a 2% administrative surcharge, for a total of 102% of the plan’s cost.2Office of the Law Revision Counsel. 29 USC 1162 – Continuation Coverage Individual coverage typically runs $500 to $600 per month. Family coverage can easily exceed $1,200 to $1,500 per month. Exact amounts depend on your employer’s plan.
The benefit is continuity. You keep the same network, the same formulary, and the deductible progress you have already built up during the plan year. If you have met a large deductible or are mid-treatment with a specialist, that continuity can outweigh the premium savings of a cheaper Marketplace plan.
COBRA Rights for Spouses and Dependents
Your spouse and dependent children are independent “qualified beneficiaries.” Your spouse can elect COBRA even if you don’t, and you cannot decline on their behalf.4eCFR. 26 CFR 54.4980B-6 – Electing COBRA Continuation Coverage If you elect COBRA without specifying it is for yourself only, the election covers all qualified beneficiaries in your family. Say so explicitly if you only want coverage for yourself.
COBRA Election Timeline and the Retroactive Safety Net
The COBRA process runs on strict deadlines, and missing any of them permanently ends your right to continue coverage.
Your employer has 30 days after you resign to notify the plan administrator of the qualifying event. The plan administrator then has 14 days to send you an election notice.5Office of the Law Revision Counsel. 29 USC 1166 – Notice Requirements When the employer is also the plan administrator, which is common at smaller companies, the full window is 44 days.6CMS. COBRA Continuation Coverage Questions and Answers
Once you receive the election notice, you have 60 days to decide. The 60-day clock starts on the later of the date the notice is sent or the date your coverage would otherwise end.3Office of the Law Revision Counsel. 29 USC 1161 – Plans Must Provide Continuation Coverage to Certain Individuals
After you elect, you have 45 days to make the first premium payment. That initial payment covers the full period back to the day you lost coverage, so waiting the full 60 days to elect and 45 more to pay can mean several months of premiums owed at once.2Office of the Law Revision Counsel. 29 USC 1162 – Continuation Coverage After that, monthly premiums carry a 30-day grace period.
The retroactive feature is a useful safety net. Because coverage applies back to the day you lost it, you can wait during the election window to see whether you actually need it. If nothing medical happens and you line up other coverage, you can skip COBRA entirely. If an emergency hits during the 60-day decision window, you can elect, pay the premiums, and the plan covers those expenses as if there was no gap.
When COBRA Can Last Longer Than 18 Months
Two situations can extend COBRA to 29 or 36 months.
Disability Extension
If the Social Security Administration determines that you or a covered family member became disabled within the first 60 days of COBRA coverage, the 18-month period extends to 29 months.7U.S. Department of Labor. Health Benefits Advisor – Disability You must notify the plan administrator of the SSA determination before the initial 18 months runs out. Premiums for the extra 11 months rise to 150% of the plan cost.2Office of the Law Revision Counsel. 29 USC 1162 – Continuation Coverage
Second Qualifying Events
If a second qualifying event occurs while someone is already on COBRA, coverage for spouses and dependents can extend to a total of 36 months from the original qualifying event. Second qualifying events include the death of the former employee, divorce or legal separation, or the former employee becoming entitled to Medicare.8DOL.gov. FAQs on COBRA Continuation Health Coverage for Workers The beneficiary must notify the plan administrator; plans do not track these events automatically. In cases of divorce or legal separation, a spouse can receive up to 36 months of continuation coverage rather than 18.
Switching to an ACA Marketplace Plan
Losing job-based coverage triggers a 60-day Special Enrollment Period on the federal or state Marketplace, letting you enroll outside the annual open enrollment window.9HealthCare.gov. Getting Health Coverage Outside Open Enrollment You can report the upcoming loss up to 60 days before it happens, which helps you avoid a gap.10CMS. Special Enrollment Periods Job Aid
A Marketplace plan often costs far less than COBRA, especially if your income has dropped. Households with income between 100% and 400% of the federal poverty level may qualify for premium tax credits.11Internal Revenue Service. Eligibility for the Premium Tax Credit For 2026, that is roughly up to $63,840 for a single person and about $132,000 for a family of four.12HHS ASPE. 2026 Poverty Guidelines Congress has periodically expanded subsidies beyond those thresholds, so check healthcare.gov for current rules when you apply.
The tradeoff is network. Marketplace plans use different provider networks than employer plans. If you are mid-treatment or have an established specialist, verify participation before switching. Plans selected during a Special Enrollment Period generally take effect on the first day of the month following selection.
Short-term health insurance is another bridge, with limits. Federal rules cap these plans at an initial term of three months and a maximum of four months including renewals. They are not minimum essential coverage, they do not have to cover pre-existing conditions, and they typically exclude mental health and maternity care. They can function as bare-bones catastrophic protection for a very short gap, not as a substitute for real coverage.
If You’re 65 or Older
Resigning at 65 or older brings a Medicare deadline that COBRA does not protect you from. You have an 8-month Special Enrollment Period for Medicare Part B beginning the month after your employment or group health plan coverage ends, whichever comes first.13Medicare.gov. When Does Medicare Coverage Start This window is triggered by the loss of coverage based on current employment, and COBRA does not count as current-employment coverage.14Medicare.gov. Medicare and You Handbook 2026
This is where people make expensive mistakes. If you resign at 65, elect COBRA, and assume you can wait until COBRA runs out to sign up for Medicare, you will likely miss your 8-month window. Missing it means waiting for the next General Enrollment Period (January through March) and paying a permanent Part B late-enrollment penalty of 10% for every full 12-month period you were eligible but not enrolled.
When you have both Medicare and COBRA, Medicare pays first and COBRA is secondary. For most people approaching 65, enrolling in Medicare and dropping COBRA is the better financial move: Medicare premiums are substantially lower, and adding Medigap or Medicare Advantage is typically cheaper than paying full group premiums.
Bridging to a New Job
A new employer’s health plan cannot make you wait more than 90 days before coverage starts.15eCFR. 26 CFR 54.9815-2708 – Prohibition on Waiting Periods That Exceed 90 Days Many employers start coverage on the first of the month after your hire date, which can mean as little as one day or as many as 30.
For the gap, you have three options: elect COBRA for a month or two, enroll in a Marketplace plan through the loss-of-coverage SEP, or rely on COBRA’s retroactive window. The retroactive approach costs nothing unless you need care. If you take a prescription or have appointments scheduled, paying for a month of COBRA or a Marketplace plan keeps your pharmacy and providers accessible without interruption.
When your new coverage begins, that itself is a qualifying event that lets you drop COBRA or your Marketplace plan. Notify the plan or administrator so you are not double-billed, and keep confirmation of your new start date in case claims from the transition period need to be sorted out later.
Your HSA and FSA After You Leave
A Health Savings Account belongs to you regardless of employment. The money does not expire and does not revert to your employer. You can continue spending HSA funds tax-free on qualified medical expenses after you resign, including on COBRA premiums, which are one of the few insurance premiums that qualify.
You can keep contributing to the HSA only if you remain enrolled in a qualifying high-deductible health plan, whether through COBRA, the Marketplace, or a new employer. For 2026, the annual HSA contribution limit is $4,400 for individual coverage and $8,750 for family coverage.16Internal Revenue Service. IRS Notice 2026-05 – HSA Limits Contributions made with after-tax dollars outside of payroll can be claimed as a deduction at tax time.
Flexible Spending Accounts work differently. An FSA is tied to your employer, and you generally lose unspent funds when you leave. Most employers give a 60- to 90-day run-out period to submit claims for expenses incurred while still employed, but you cannot use the FSA for new expenses after your coverage ends. If you have a meaningful balance, schedule pending appointments, fill prescriptions, and buy eligible supplies before your last day. You can elect COBRA for a health care FSA to keep contributing and spending through the end of the plan year, but that only makes sense if you expect to spend more than you will pay in premiums.