Missing the annual Open Enrollment window in South Carolina does not lock you out of health coverage for the rest of the year. If you have had a qualifying life event, such as losing job-based insurance, getting married, having a baby, or moving to a new county, you can enroll in or change a marketplace plan during a Special Enrollment Period (SEP). South Carolina uses the federal marketplace at HealthCare.gov, so the same federal rules apply whether you live in Charleston, Columbia, Greenville, or a rural county in the Pee Dee. Most qualifying events give you 60 days from the date of the event, losing Medicaid gives most people 90 days, and a 2026 change removed the year-round monthly enrollment option that households under 150% of the federal poverty level used to have. Timing matters more than it did a year ago.
What Is a Special Enrollment Period?
A Special Enrollment Period is a window outside the standard annual Open Enrollment Period when you are allowed to sign up for, or switch, a marketplace health plan. Open Enrollment for 2026 coverage ran from November 1, 2025, through January 15, 2026. Outside that window, the only way into a marketplace plan is through an SEP triggered by a specific life change that HealthCare.gov recognizes.
For most South Carolina residents, the SEP window is 60 days. The clock generally starts on the date of the qualifying event, not the date you submit your application. If you enroll during the first half of the month, coverage usually starts the first day of the following month. Enroll later and your start date can push out further.
Medicaid and CHIP are different. South Carolina Healthy Connections has no enrollment window at all. If you qualify, you can apply any day of the year through the South Carolina Department of Health and Human Services.
Qualifying Life Events That Trigger a South Carolina SEP
HealthCare.gov sorts qualifying events into four broad groups: loss of coverage, changes in household, changes in residence, and other special situations.
Loss of Health Coverage
- Losing job-based health insurance through a layoff, reduced hours, a resignation, or an employer dropping the plan
- Aging off a parent's plan at 26
- Losing eligibility for South Carolina Healthy Connections Medicaid or Partners for Healthy Children (the state's CHIP program)
- Losing coverage through a spouse or former spouse after divorce or legal separation
- An individual market plan or COBRA coverage ending
- Losing student health coverage after graduating from a South Carolina college
- A plan year ending on a non-calendar-year schedule
Loss of coverage is the one category where you can act early. You can apply up to 60 days before your coverage ends, which is the cleanest way to avoid a gap. Voluntarily dropping coverage, or losing it because you did not pay your premiums, does not count.
Changes in Household
- Getting married
- Getting divorced or legally separated and losing coverage because of it
- Having a baby, adopting a child, or taking a child into foster placement
- A death in the household that changes who is eligible for a current plan
- Gaining a dependent through a court order or child support order
Changes in Residence
- Moving to South Carolina from another state
- Moving within South Carolina to a county or ZIP code where different plans are sold
- Moving to or from the United States from a foreign country or U.S. territory
- A student moving to or from school
- A seasonal worker moving to or from the place they both live and work
- Moving into or out of a shelter or other transitional housing
A move only qualifies if you had qualifying coverage for at least one of the 60 days before the move, unless you were living abroad or in a U.S. territory. A move for medical treatment or a vacation does not count.
Other Qualifying Situations
- Gaining U.S. citizenship or lawfully present immigration status
- Being released from incarceration
- Becoming a member of a federally recognized tribe or an Alaska Native Claims Settlement Act shareholder
- Starting or ending AmeriCorps VISTA or NCCC service
- Your employer offering you an individual coverage HRA (ICHRA) or a qualified small employer HRA (QSEHRA)
- Being found ineligible for Healthy Connections Medicaid after applying during Open Enrollment
- Your insurer materially violating its contract with you
- An enrollment error caused by the marketplace, a plan, or an assister
- A serious medical condition, natural disaster, or other emergency that kept you from enrolling on time, reviewed case by case
That last category matters in a hurricane state. If a declared disaster in your county prevented you from completing an enrollment, HealthCare.gov can grant an exceptional circumstances SEP. Those are handled by the Marketplace Call Center at 1-800-318-2596 rather than through the standard online flow.
SEP Window Lengths at a Glance
| Qualifying Event | Window | Can You Apply Early? |
|---|
| Losing job-based, individual, or COBRA coverage | 60 days after | Yes, up to 60 days before |
| Losing Healthy Connections Medicaid or CHIP | 90 days after in most cases | Yes, up to 60 days before |
| Marriage | 60 days after | No |
| Birth, adoption, or foster placement | 60 days after | No |
| Permanent move | 60 days after | Yes, up to 60 days before |
| Gaining citizenship or lawful status | 60 days after | No |
| Release from incarceration | 60 days after | No |
| Denied Medicaid after an Open Enrollment application | 60 days after the denial notice | No |
| ICHRA or QSEHRA offer | 60 days before the start date | Yes |
The 2026 Change: No More Year-Round Enrollment Under 150% FPL
For several years, anyone with projected household income at or below 150% of the federal poverty level could enroll in a marketplace plan in any month, without needing a life event. HealthCare.gov stopped offering that monthly low-income SEP as of August 25, 2025. Separately, the federal budget law enacted July 4, 2025, bars premium tax credits for people who enroll through an SEP based only on income, for plan years beginning after December 31, 2025. Between the two, a South Carolinian whose only claim to an SEP is a low income generally has no practical path to subsidized marketplace coverage until the next Open Enrollment.
This lands harder in South Carolina than in most states, because South Carolina has not expanded Medicaid. Healthy Connections covers parents and caretaker relatives only up to about 62% of the federal poverty level, children up to 208% FPL, and pregnant women up to 194% FPL. Non-disabled adults without dependent children generally do not qualify at any income. Marketplace premium tax credits, meanwhile, start at 100% FPL. An estimated 65,000 South Carolina adults fall in the gap between those two lines, with no Medicaid and no subsidy. See our South Carolina benefits overview for programs that may still help if you are in that group.
The Subsidy Change That Affects What You Pay
Enhanced premium tax credits that had been in place since 2021 expired December 31, 2025. The House passed a three-year extension on January 8, 2026, but it did not clear the Senate, so 2026 coverage is priced under the original ACA subsidy rules. Two practical effects:
- The 400% FPL subsidy cliff is back. Above that income, you generally get no premium tax credit at all, even with a valid SEP.
- Households between 100% and 400% FPL still qualify for a credit, but pay a larger share of the premium than in 2025.
South Carolina's average pre-subsidy premium rose roughly 21% for 2026, with individual carrier increases running from about 17.5% to 25.2%. More than 89% of South Carolina enrollees still qualified for a premium tax credit during the last Open Enrollment. Six insurers sell 2026 marketplace plans in the state: BlueCross BlueShield of South Carolina, Ambetter from Absolute Total Care, Molina, Select Health, UnitedHealthcare, and InStil Health. Which of them you can pick from depends on your county.
2026 Federal Poverty Level Reference
| Household Size | 100% FPL | 150% FPL | 400% FPL |
|---|
| 1 | $15,960 | $23,940 | $63,840 |
| 2 | $21,640 | $32,460 | $86,560 |
| 3 | $27,320 | $40,980 | $109,280 |
| 4 | $33,000 | $49,500 | $132,000 |
| 5 | $38,680 | $58,020 | $154,720 |
These are the 2026 guidelines for the 48 contiguous states, which include South Carolina. Your projected income for the coverage year, not last year's, is what HealthCare.gov uses.
How to Apply for a South Carolina SEP
- Pin down the event date. Write down exactly when the qualifying event happened or will happen. That date starts your window and determines your coverage start date.
- Gather documentation. Common proofs are a termination letter on employer letterhead, a COBRA election or termination notice, a Healthy Connections denial or termination letter, a marriage certificate, a birth certificate or adoption decree, or a signed South Carolina lease plus proof of prior coverage for a move.
- Start at HealthCare.gov. Apply online at healthcare.gov or call the Marketplace Call Center at 1-800-318-2596, open 24 hours a day. South Carolina does not run its own exchange, so this is the only place to get a subsidized marketplace plan.
- Answer the life-change screening questions. The application asks what changed and when. Answer precisely. A wrong date can shorten or void your window.
- Report income and household size accurately. This sets your premium tax credit. Advance credits are reconciled on your federal tax return, so an inflated estimate can create a bill later.
- Upload any requested documents on time. HealthCare.gov gives a deadline in your account when it asks for proof. Missing it can cancel the plan you selected.
- Compare plans on total cost, not just premium. Check the deductible, the out-of-pocket maximum, the drug formulary, and whether your doctors and hospitals are in network. Networks in South Carolina vary sharply by carrier and county.
- Pay the first premium. Coverage does not begin until the binder payment clears, even after your enrollment is approved.
Free help is available. Certified navigators and licensed agents in South Carolina can walk you through the application at no cost to you. You can find one through the "Find Local Help" tool on HealthCare.gov.
A Note on Document Requests
CMS issued a 2025 rule that would have required HealthCare.gov to verify eligibility before enrollment for a large share of SEP applicants, across all qualifying event types rather than just loss of coverage. A federal district court in Maryland stayed that provision on August 22, 2025, in City of Columbus v. Kennedy, No. 1:25-cv-2114 (D. Md.), and the litigation remained on appeal at the Fourth Circuit as of August 2026. Because the rule's status has moved more than once, do not plan around it either way. Assume you may be asked for proof, collect your documents when the event happens, and upload whatever HealthCare.gov requests by the deadline shown in your account. Check healthcare.gov or call 1-800-318-2596 for what applies on the day you file.
What Happens If You Miss Your Window
If the 60 or 90 days pass, that opportunity closes. You would have to wait for the next Open Enrollment Period unless a new qualifying event occurs. Short-term limited duration plans are sold in South Carolina, but they are not ACA-compliant, they can deny you for pre-existing conditions, and they do not qualify for subsidies. Healthy Connections Medicaid, Partners for Healthy Children, and community health centers on a sliding fee scale remain open year-round regardless of the marketplace calendar.
Frequently Asked Questions
How long is the South Carolina Special Enrollment Period?
Most qualifying events give you 60 days from the date of the event. Losing Healthy Connections Medicaid or CHIP coverage gives most people 90 days. If you are losing coverage, you can also apply up to 60 days before the loss takes effect.
Does South Carolina have its own health insurance exchange?
No. South Carolina uses the federally facilitated marketplace at HealthCare.gov. There is no state-run exchange, so all marketplace applications, including SEP applications, go through healthcare.gov or the Marketplace Call Center at 1-800-318-2596.
Can I still enroll year-round if my income is under 150% of the poverty level?
No. HealthCare.gov ended the monthly low-income special enrollment period as of August 25, 2025, and the July 2025 federal budget law bars premium tax credits for anyone enrolling through an income-based SEP for plan years starting after 2025. You now need a standard qualifying event or the annual Open Enrollment Period.
Does a drop in income by itself qualify me for an SEP?
Generally no. An income change opens a window only when it changes your program eligibility, such as newly qualifying you for premium tax credits after a Healthy Connections termination. A change in income with no change in eligibility is not a standalone qualifying event.
What documents do I need for a South Carolina SEP application?
It depends on the event. Typical items are a job termination or COBRA notice, a Healthy Connections termination or denial letter, a marriage certificate, a birth certificate or adoption paperwork, a divorce decree, or a South Carolina lease or utility bill plus proof you had coverage before the move.
Does moving within South Carolina count?
Yes, if the move gives you access to different plans, for example moving from Greenville County to Charleston County where a different set of carriers sells plans. Moving across town within the same service area, with the same plan options, generally does not qualify.
I was denied Healthy Connections Medicaid. Can I get a marketplace plan?
Yes. Being found ineligible for Medicaid or CHIP after applying is itself a qualifying event, and you generally have 60 days from the date of the denial notice to enroll. Keep the denial letter, since it is the document HealthCare.gov will ask for. If your income is below 100% FPL and you were denied because South Carolina has not expanded Medicaid, you are likely in the coverage gap and would not qualify for subsidies.
When does coverage start after an SEP enrollment?
For most events, enrolling between the 1st and 15th of a month starts coverage on the 1st of the following month, and enrolling from the 16th onward starts it on the 1st of the second following month. Birth, adoption, and foster placement can be retroactive to the date of the event. Loss of coverage handled in advance can start the day after the old plan ends.
When is the next Open Enrollment Period?
The next annual Open Enrollment for South Carolina is expected to run November 1, 2026, through January 15, 2027, for 2027 coverage. Confirm exact dates on healthcare.gov in the fall, since federal rules on the length of Open Enrollment have been the subject of ongoing rulemaking and litigation.
