South Dakota
Cheapest ACA plans in South Dakota for 2026
Cheapest Bronze plan in South Dakota, before subsidies: Avera Health Plans, Inc. DirectConnect Standard 7500 HSA Eligible HDHP in Lincoln County at $406/month for a 40-year-old; Avera Health Plans, Inc. DirectConnect Standard 7500 HSA Eligible HDHP in Lincoln County at $1,299/month for a family of four (two 40-year-olds and two kids under 14). South Dakota uses Healthcare.gov, expanded Medicaid in July 2023 after voters passed Amendment D in November 2022, and relies on federal APTC with no state premium wraparound.
Cheapest plans by metal tier
Lowest 2026 monthly premium for a single 40-year-old, on-exchange, before any subsidy. Per-age figures derived from the CMS QHP Landscape file using the HHS standardized age-rating curve (45 CFR 147.102).
| Tier | Cheapest age 40 monthly | Plans statewide |
|---|---|---|
| Catastrophic | $291 | 138 |
| Bronze | $406 | 222 |
| Expanded Bronze | $416 | 342 |
| Silver | $512 | 596 |
| Gold | $559 | 524 |
The actual cheapest plan in major counties
Same data the search returns: carrier, plan name, monthly premium, individual deductible, individual MOOP. Computed for a single 40-year-old, before any subsidy. Catastrophic plans excluded because adults 30+ typically need a hardship-exemption certificate to enroll.
Minnehaha County
$406/moAvera Health Plans, Inc. · DirectConnect Standard 7500 HSA Eligible HDHP
Pennington County
$540/moWellmark of South Dakota, Inc · Wellmark Bronze Traditional EPO
Lincoln County
$406/moAvera Health Plans, Inc. · DirectConnect Standard 7500 HSA Eligible HDHP
Brown County
$426/moSanford Health Plan · TRUE Standardized 7500
Brookings County
$514/moWellmark of South Dakota, Inc · Wellmark Bronze Traditional EPO
Codington County
$514/moWellmark of South Dakota, Inc · Wellmark Bronze Traditional EPO
The actual cheapest plan for a family of four
Two 40-year-old adults and two kids in the 0-14 age band, before any subsidy. Carrier, plan name, premium, deductible, and MOOP exactly as the search would return them.
Minnehaha County
$1,299/moAvera Health Plans, Inc. · DirectConnect Standard 7500 HSA Eligible HDHP
Pennington County
$1,726/moWellmark of South Dakota, Inc · Wellmark Bronze Traditional EPO
Lincoln County
$1,299/moAvera Health Plans, Inc. · DirectConnect Standard 7500 HSA Eligible HDHP
Brown County
$1,361/moSanford Health Plan · TRUE Standardized 7500
Brookings County
$1,642/moWellmark of South Dakota, Inc · Wellmark Bronze Traditional EPO
Codington County
$1,642/moWellmark of South Dakota, Inc · Wellmark Bronze Traditional EPO
Subsidies: federal APTC only (no state premium subsidy)
South Dakota does not fund a supplemental state premium subsidy or §1332 reinsurance waiver. Marketplace help is federal only:
- Federal Advance Premium Tax Credit (APTC). Households 100-400% FPL on the PY2026 standard ACA contribution curve. The ARPA / IRA enhanced subsidies expired 2025-12-31 and are not in effect for 2026, so the hard 400% FPL cliff is back.
- Federal cost-sharing reductions (CSRs). Households 100-250% FPL enrolled in a Silver plan receive reduced deductibles, copays, and out-of-pocket maximums automatically.
South Dakota expanded Medicaid effective July 1, 2023, after voters approved Constitutional Amendment D in November 2022 (56% yes), adding Medicaid expansion to the state constitution. Adults 19-64 up to 138% FPL now qualify regardless of parental status or disability, so there is no coverage gap in South Dakota.
Catastrophic plans in South Dakota follow federal rules
South Dakota follows the federal ACA default: Catastrophic plans are available to enrollees under age 30, or at any age with a hardship / affordability exemption. The PY2026 federal auto-expansion applies: adults 30+ automatically qualify when the lowest-cost Bronze plan exceeds the affordability threshold. APTC does not apply to Catastrophic plans.
Tobacco surcharges follow the federal 1.5x default in South Dakota
South Dakota applies the federal ACA default (45 CFR 147.102): carriers may charge tobacco users up to 50% more than non-users (a 1.5-to-1 rate ratio). The South Dakota Division of Insurance reviews rate filings under SDCL Title 58. No South Dakota-specific cap below the federal 1.5x ceiling has been identified. Federal APTC does not offset the tobacco portion of the premium.
Carriers selling 2026 plans in South Dakota
3 carriers sell 2026 plans on Healthcare.gov. 3,112 plans across 66 counties. South Dakota's individual market is compact and dominated by provider-owned plans: Sanford Health Plan (a Sanford Health affiliate), Avera Health Plans (an Avera Health affiliate), and Wellmark Blue Cross Blue Shield. Carrier availability varies by county.
| Carrier | On-exchange plans | Counties |
|---|---|---|
| Avera Health Plans | 880 | 66 |
| Sanford Health Plan | 648 | 66 |
| Wellmark of South Dakota, Inc | 294 | 42 |
Enrollment
Open Enrollment for 2026 coverage runs November 1, 2025 through January 15, 2026. Enroll by December 15 for a January 1 effective date; December 16 through January 15 takes effect February 1. Special Enrollment is available year-round for qualifying life events.
Direct enrollment: healthcare.gov.
Frequently asked questions
What is the cheapest ACA plan in South Dakota for 2026?
The cheapest Bronze-tier plan a 40-year-old can enroll in without paperwork is Avera Health Plans, Inc. DirectConnect Standard 7500 HSA Eligible HDHP in Lincoln County at $406 per month before subsidies. Data refreshed 2026-04-19T08:08:55.462Z.
Does South Dakota use Healthcare.gov?
Yes. South Dakota participates in the federally-facilitated Marketplace (FFM), so enrollment and subsidy applications run through healthcare.gov. South Dakota does not operate a state-based exchange.
Has South Dakota expanded Medicaid?
Yes, effective July 1, 2023. South Dakota voters approved Constitutional Amendment D in November 2022 with 56% support, adding Medicaid expansion to the state constitution. Adults 19-64 with income up to 138% FPL qualify regardless of parental status or disability, so there is no coverage gap.
What was Amendment D?
Amendment D was a 2022 South Dakota ballot initiative that amended the state constitution to require Medicaid expansion under the ACA. Voters approved it in November 2022 with 56% support, and the state implemented expansion on July 1, 2023.
Which carriers offer South Dakota plans on Healthcare.gov?
Sanford Health Plan, Avera Health Plans, and Wellmark Blue Cross Blue Shield are the principal carriers on the South Dakota individual market. County-level availability varies, with Sanford and Avera strongest in their respective provider network footprints.
Does South Dakota have a state premium subsidy on top of federal APTC?
No. South Dakota does not fund a state premium assistance program or §1332 reinsurance waiver. The only financial help for Marketplace enrollees is federal APTC and CSRs, and the ARPA/IRA enhanced credits expired at the end of 2025.
Compare South Dakota with other states
- North Dakota (shares a border)
- Minnesota (shares a border)
- Iowa (shares a border)
- See all 51 jurisdictions side by side
Browse county pages in South Dakota
County-level pricing pages with the cheapest plan in each county.
Browse city pages in South Dakota
City-level pricing pages for major South Dakota cities.
Carriers in South Dakota
Per-carrier 2026 pricing pages with the cheapest plan from each carrier.
Sources
- HealthCare.gov for enrollment, OEP dates, and federal APTC / CSR application.
- South Dakota Division of Insurance for rate review, carrier filings, and consumer guidance.
- South Dakota Medicaid: Department of Social Services for Medicaid expansion eligibility and enrollment.
- South Dakota Amendment D (2022 Ballot) for the voter-approved Medicaid expansion.
- KFF: South Dakota State Health Facts for Medicaid expansion, enrollment, and benchmark premium context.
- CMS QHP Landscape Individual Medical 2026 for plan availability, premiums, and metal tiers.
Plan year 2026, last refreshed 2026-04-19T08:08:55.462Z. Full pricing pipeline + regulatory references at methodology; ACA terminology in the glossary.