COBRA continuation coverage has a hard stop: 18 months for most people who lost job-based coverage (and up to 36 months for qualifying events like divorce or death of the covered employee). When that clock runs out, you lose coverage on the last day of the final month you paid for. Unlike losing a job, COBRA expiration is predictable months in advance. That advance notice is a major advantage because you can shop for a replacement plan before your last day of coverage, compare your 2026 Marketplace options, and potentially line up new coverage to start the same day or the day after COBRA ends, with zero gap. The 60-day Special Enrollment Period for COBRA expiration is a qualifying life event under the Affordable Care Act, recognized in the same way as job loss, marriage, or having a baby. Healthcare.gov and all state-based Marketplaces accept COBRA termination letters as documentation for this SEP. Medicaid agencies in all 40 expansion states plus DC accept loss of COBRA as a change-in-circumstances that may open Medicaid eligibility year-round.
Most people on COBRA are paying 102% of the full employer-plus-employee premium, which in 2026 typically runs $450 to $900 per month for an individual and $1,200 to $2,800 per month for family coverage. When COBRA expires, that same person may discover that an ACA Marketplace Silver plan costs $10 to $150 per month after premium tax credits, depending on projected annual income. The difference is not because the coverage is worse but because the ACA subsidy structure is income-based and scales dramatically at lower income levels. Anyone whose income falls under 400% of the Federal Poverty Level (about $63,840 for a single person in 2026 or $132,000 for a family of four) qualifies for some premium tax credit. Below 138% FPL ($22,025 single, $45,540 family of four in 2026), Medicaid in expansion states provides free comprehensive coverage with no premium at all. The 2026 ACA subsidy cliff returned after the enhanced premium tax credits from the American Rescue Plan Act and Inflation Reduction Act expired on January 1, 2026, so planning around the exact 400% FPL threshold matters more this year.
7 Steps to Get Coverage
Common Mistakes That Cost People Thousands
The most expensive mistakes people make when COBRA expires:
- Waiting until the last week of COBRA to start shopping. Marketplace plan options, network checks, and documentation upload take time. Start comparing plans 60 to 90 days before COBRA ends.
- Assuming the Marketplace plan will have the same network as COBRA. COBRA keeps you on the original employer plan network. Marketplace plans in the same area often have narrower networks. Verify every current provider is in-network before enrolling.
- Using last year's income for the subsidy calculation. Marketplace uses projected current-year MAGI. If your income changed since you filed your last tax return, report your actual projected 2026 income. Under-reporting or over-reporting both cause problems: under-reporting triggers a reconciliation bill at tax time; over-reporting means you pay too much monthly.
- Not checking Medicaid first. Anyone under 138% FPL in the 40 expansion states plus DC qualifies for free Medicaid year-round. Paying $0 to $200 per month for a Marketplace plan when you qualify for $0 Medicaid is a preventable loss.
- Missing the spouse-plan 30-day window. The spouse's employer plan SEP under HIPAA Section 9831 is only 30 days, not 60. If a spouse plan is your preferred option, contact HR immediately at or before COBRA expiration, not 45 days after.
- Enrolling in a short-term health plan as a substitute for ACA coverage. Short-term plans do not cover pre-existing conditions, do not count as minimum essential coverage, and leave you exposed to large out-of-pocket costs if you have a serious medical event. Use only as a true last-resort bridge of under 90 days.
How Long Does COBRA Last and When Is Your Expiration Date?
COBRA duration is set by the qualifying event that triggered continuation coverage, not by personal choice. Standard COBRA for job loss or reduction in hours lasts a maximum of 18 months from the qualifying event date. Qualifying events that result in loss of coverage due to death of the covered employee, divorce or legal separation, or a dependent child aging off a parent's plan trigger up to 36 months of COBRA. Disability extensions can add another 11 months (for a total of 29 months) when a Social Security disability determination is made within 60 days of the original qualifying event. Your COBRA election notice from your employer's plan administrator shows the coverage end date explicitly. If you did not save that notice, request a re-send from your COBRA administrator or HR department, since you will need the termination date to trigger your Marketplace SEP within the correct 60-day window.
Federal COBRA applies to employers with 20 or more employees. Smaller employers (under 20 employees) are subject to state mini-COBRA laws where they exist: California's Cal-COBRA extends continuation to 36 months through the state DOI, New York's continuation law applies to groups with 2 to 19 employees, and similar laws exist in Connecticut, Florida, Georgia, Illinois, Minnesota, New Jersey, and Texas, among others. State mini-COBRA durations and costs vary. If you worked for a small employer and are near the end of state mini-COBRA, confirm your exact expiration date with your state insurance commissioner's office or plan administrator, since state continuation rules differ from federal COBRA rules on duration and documentation.
Medicaid Eligibility When COBRA Expires: Income Thresholds by State Type
Medicaid is income-gated at 138% of the Federal Poverty Level in the 40 expansion states plus DC. For 2026, that means $22,025 for a single person and $45,540 for a family of four. State Medicaid programs operate under different brand names depending on where you live. In California, that program is Medi-Cal. Arizona calls it AHCCCS. Massachusetts calls it MassHealth. Washington State's version is Apple Health. Oregon's is OHP (Oregon Health Plan). Wisconsin's BadgerCare covers Medicaid in that state. Connecticut's HUSKY Health program covers Medicaid and CHIP. The 10 states that have not expanded Medicaid (Alabama, Florida, Georgia, Kansas, Mississippi, South Carolina, Tennessee, Texas, Wisconsin, and Wyoming) have significantly stricter eligibility requirements, typically under 100% FPL for non-disabled adults without dependent children, which leaves a coverage gap. In those states, the ACA Marketplace is the primary option for most adults who lose COBRA.
Medicaid expansion status and 2026 income limit, selected states| State | Expansion status | Program brand | Adult income limit (2026) |
|---|
| California | Expanded | Medi-Cal | 138% FPL ($22,025 single) |
| Arizona | Expanded | AHCCCS | 138% FPL ($22,025 single) |
| Massachusetts | Expanded | MassHealth | 138% FPL ($22,025 single) |
| Texas | NOT expanded | Texas Medicaid | Under ~20% FPL for most adults |
| Florida | NOT expanded | Florida Medicaid | Under ~100% FPL for parents only |
40 states plus DC have expanded Medicaid as of 2026. Wisconsin's BadgerCare covers adults to 100% FPL under a waiver but has not adopted the full ACA expansion. Source: KFF State Health Facts 2026.
Source: KFF State Health Facts 2026, Medicaid.gov
Documents You Need to Prove COBRA Expiration for Your SEP
Healthcare.gov and all state-based Marketplaces require documentation that proves your qualifying life event. For COBRA expiration, the primary document is your COBRA termination letter or the final COBRA billing notice that shows coverage ends on a specific date. Your COBRA administrator (usually a third-party benefits company contracted by your former employer) is required by federal law to send you a termination notice when coverage lapses. If you do not receive one, request it in writing from your former employer's HR department or the COBRA plan administrator. A letter on company letterhead confirming the end date also works in most cases. The Marketplace typically gives you 30 days after submitting your application to upload supporting documentation, but having your documents ready before you apply speeds processing and avoids a gap in coverage. Along with the COBRA letter, you will need your Social Security number, current address and ZIP code, and projected household income for 2026. Your prior-year tax return (1040) is useful as a reference but is not submitted to the Marketplace directly.
ACA Marketplace vs COBRA: Cost Comparison for 2026
COBRA costs 102% of the full group plan premium, meaning you pay both the employer and employee share plus a 2% administrative fee. For an individual in 2026, typical COBRA premiums run $450 to $900 per month. Family COBRA often exceeds $1,500 to $2,800 per month. ACA Marketplace Silver plans, by contrast, qualify for cost-sharing reductions below 250% FPL and premium tax credits up to 400% FPL. KFF's 2026 Marketplace analysis shows the benchmark Silver plan (second-lowest-cost Silver) averages $480 per month before subsidy for a 40-year-old, but falls to $40 to $180 per month for someone earning $35,000 per year ($35k is about 219% FPL for a single person in 2026). At $50,000 income (313% FPL single), the net premium on a benchmark Silver plan drops to approximately $150 to $250 per month. At $60,000 (376% FPL single), net premium is roughly $300 to $400 per month. The crossover point where COBRA and a subsidized Marketplace plan cost the same differs by household, location, and plan tier, but for most former COBRA enrollees in the income range of $25,000 to $60,000, the Marketplace Silver plan is substantially cheaper in 2026.
Frequently Asked Questions
What is the SEP window when COBRA expires?
COBRA expiration triggers a 60-day Special Enrollment Period under the ACA. The 60-day window starts the day after your COBRA coverage ends. For example, if COBRA expires on September 30, 2026, your SEP runs from October 1 through November 29, 2026. You must submit your Marketplace application and select a plan by Day 60. Coverage typically starts the first day of the month following enrollment. Healthcare.gov lists loss of COBRA as a recognized qualifying life event in the same category as job loss.
How do I document COBRA expiration for my SEP application?
The primary document is your COBRA termination letter or a written notice from your COBRA plan administrator confirming the coverage end date. Healthcare.gov accepts COBRA termination letters, final COBRA billing statements showing the plan end date, or a letter on company letterhead from HR confirming the loss of coverage date. Upload the document within 30 days of submitting your Marketplace application. If you cannot locate your termination letter, contact your former employer's HR department or the COBRA third-party administrator directly and request a written confirmation of your coverage end date.
What if I miss the 60-day SEP after COBRA expires?
Missing the 60-day Marketplace SEP after COBRA expiration leaves you without a pathway to Marketplace coverage until the next ACA Open Enrollment Period (November 1 through January 15 for 2027 coverage). Medicaid, however, is year-round and not subject to SEP deadlines: if your income qualifies (under 138% FPL in expansion states), you can apply at any time. If you miss the Marketplace SEP and do not qualify for Medicaid, short-term health plans are an option but do not cover pre-existing conditions and do not count as minimum essential coverage under the ACA.
Does COBRA expiration qualify for ACA retroactive coverage?
ACA Marketplace plans enrolled through a COBRA expiration SEP generally start prospectively, not retroactively. Coverage begins the first day of the month after you enroll, or in some cases the first day of the month you enroll, depending on when in the month you submit your application. Unlike birth or adoption (which can produce retroactive coverage back to the event date), COBRA expiration does not produce a retroactive coverage start date. Medicaid can sometimes provide retroactive coverage for up to 3 months before the application date in states that still allow retroactive Medicaid, but that is a separate program from the Marketplace SEP.
What is the difference between COBRA expiration and losing job coverage for SEP purposes?
Both COBRA expiration and direct job-loss coverage termination are recognized qualifying life events that trigger a 60-day Marketplace SEP. The practical difference is that COBRA expiration is predictable months in advance, giving you time to plan, shop, and submit a Marketplace application before your last day of COBRA coverage. Job-loss coverage termination often happens with less advance notice. Documentation also differs: for COBRA expiration you need a COBRA termination letter; for job-loss coverage termination you may need a letter from your employer confirming the last day of employer-sponsored coverage.
Can I get retroactive Marketplace coverage to avoid a gap when COBRA expires?
Retroactive Marketplace coverage is not available for COBRA expiration SEPs. Coverage begins on the first day of the month following enrollment, or the first day of the current month if you enroll in the first 15 days and your plan allows it. To avoid any coverage gap, submit your Marketplace application and select a plan before your COBRA expiration date, requesting a start date that aligns with or immediately follows your COBRA end date. Many people apply 2 to 4 weeks before COBRA expires to ensure continuous coverage.
Do I qualify for Medicaid when my COBRA expires in 2026?
Medicaid eligibility depends on your current household income, not your COBRA status. In the 40 expansion states plus DC, anyone with income under 138% of the 2026 Federal Poverty Level ($22,025 single, $45,540 family of four) qualifies for Medicaid year-round, with no enrollment deadline. COBRA expiration can be the moment when your income first becomes visible to Medicaid eligibility workers, especially if you recently lost a job. Apply through healthcare.gov or your state Medicaid agency simultaneously with your Marketplace application. State programs have different names: Medi-Cal in California, AHCCCS in Arizona, MassHealth in Massachusetts, Apple Health in Washington.
How does the 2026 ACA subsidy cliff affect my Marketplace options after COBRA?
The 400% FPL subsidy cliff returned for 2026 after the enhanced premium tax credits from the American Rescue Plan Act and Inflation Reduction Act expired on January 1, 2026. For 2026, households with income above 400% FPL ($63,840 single, $132,000 family of four) receive no premium tax credit. Households just above 400% FPL face the steepest rate jump, potentially paying full unsubsidized premiums. If your projected 2026 income is near the 400% FPL threshold, consider carefully whether adjusting projected income down (if that accurately reflects your expected earnings) could move you into the subsidy range. Report only your honest projected income; misrepresenting income to capture subsidies results in reconciliation at tax time via Form 8962 and potential repayment.
