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ACA Marketplace, off-Exchange, and short-term coverage in South Carolina
Three different products people often lump together as “private insurance.” The rules, subsidies, and consumer protections are not the same.
| Marketplace (on-Exchange) ACA | Off-Exchange ACA | Short-term limited-duration | |
|---|---|---|---|
| Where you buy it in South Carolina | HealthCare.gov, or with an agent who enrolls you through the Marketplace. | Directly from an issuer or through an agent. Not listed on HealthCare.gov. | From an issuer authorized in South Carolina, often through an agent. Product rules and filing requirements vary. |
| Is it ACA major medical? | Yes. | Yes. Off-Exchange-only plans are still ACA plans when they are filed that way. | No. These policies are not required to follow ACA market rules. |
| Federal premium tax credits | May apply if you qualify. The only way to know is a Marketplace application or a similarly complete eligibility check. | Not eligible. | Not eligible. |
| Pre-existing conditions | Covered. Guaranteed issue; no pre-existing condition waiting period on 2027 individual ACA plans. | Same ACA protections. | Issuers may deny applications because of medical history. In most cases these plans do not cover pre-existing conditions. |
| Essential health benefits | Required. | Required. | Not required. Maternity, preventive care, prescription drugs, mental health, and other benefits may be limited or excluded. |
| Out-of-pocket maximum | Yes, as required for ACA plans. | Yes, as required for ACA plans. | There is generally no required out-of-pocket maximum of the kind ACA plans must have. |
| When you can enroll | Open Enrollment or a Special Enrollment Period. | Generally the same individual-market enrollment windows as other ACA plans. | Typically any time you can pass underwriting, subject to the product’s rules — not a substitute for missing Open Enrollment if you need ACA coverage. |
| If the plan ends | Loss of qualifying coverage can open a Special Enrollment Period. | Same, if it is qualifying individual coverage that ends. | Expiration of short-term coverage does not, by itself, trigger a Marketplace Special Enrollment Period. You may have to wait until Open Enrollment. |
Marketplace plans on HealthCare.gov
South Carolina uses the federally facilitated Marketplace at HealthCare.gov. Open Enrollment for 2027 coverage is November 1, 2026 through January 15, 2027. Enroll by December 15, 2026 for a January 1, 2027 start; later enrollments in that window generally start February 1, 2027.
Premium tax credits, when you qualify, apply to eligible Marketplace plans. Off-Exchange plans do not get those credits. Credit amounts depend on your household income and the benchmark plan in your area; this site will not invent a subsidy number. Standard credits may still be available for eligible households even though the temporary enhanced credits from the early 2020s have ended. The reliable check is the Marketplace application itself.
Sources: HealthCare.gov.
Off-Exchange ACA plans in South Carolina
An off-Exchange plan is still an ACA individual plan when it is filed that way. It is simply not sold on HealthCare.gov, so it cannot be paired with Advanced Premium Tax Credits. Some companies file both on- and off-Exchange; others file off-Exchange only. County availability still varies.
People sometimes choose an off-Exchange plan when they are not eligible for a credit, want a benefit or network design that is filed off-Exchange, or are using certain employer payment arrangements that are built around individual coverage. Those situations are fact-specific. We will not tell you an off-Exchange plan is “better” in the abstract.
Short-term limited-duration insurance
Short-term limited-duration insurance is temporary coverage meant to fill a gap — for example, between jobs, while waiting for employer coverage or Medicare, or when you are uninsured outside ACA Open Enrollment. It is usually less expensive because it is not comprehensive ACA coverage.
Important consumer protections that apply to ACA plans generally do not apply here:
- An issuer can ask health questions and deny the application.
- Most short-term plans do not cover pre-existing conditions; read the issuer’s definition.
- Essential health benefits are not required. Maternity, preventive care, prescription drugs, dental, and vision are often limited or excluded. Annual or lifetime dollar caps may apply.
- There is generally no required out-of-pocket maximum of the kind ACA plans must have.
- The plan is not minimum essential coverage and does not qualify for ACA premium tax credits.
- When the plan ends, that ending does not by itself open a Marketplace Special Enrollment Period.
Federal consumer guidance also emphasizes a prominent disclaimer, including this substance: the coverage is not required to comply with certain federal market requirements, principally those in the Affordable Care Act; you should check exclusions and limits on pre-existing conditions and on benefits such as hospitalization, emergency services, maternity, preventive care, prescription drugs, and mental health and substance use disorder services; the policy might have lifetime or annual dollar limits; and if the coverage expires or you lose eligibility, you might have to wait until an open enrollment period for other coverage.
How long can a short-term policy last in South Carolina?
Duration depends on the product that is actually being offered and on current federal and South Carolina rules, which have changed in recent years. On August 7, 2025, the U.S. Departments of Labor, Health and Human Services, and the Treasury said they do not intend to prioritize enforcement of the 2024 federal short-term definition until future rulemaking, and that HHS will not treat a state as failing to enforce federal individual-market rules if the state takes a similar approach or applies its own state-law definition. This site will not promise a particular term length. Ask for the outline of coverage and the duration being offered the week you apply.