Self-employed health insurance in South Dakota: a small market with a mild 2026 (2026)

Sam Jaber, Licensed Health Insurance Advisor · Updated September 2026 · Last reviewed September 18, 2026

If you're self-employed in South Dakota, you have four practical coverage routes: Medicaid when your income is low, a HealthCare.gov plan with a federal premium tax credit, a marketplace plan without financial help, or temporary coverage by keeping a former employer's plan. Only three insurers participate in the state's marketplace, and one doesn't serve every county. That means your location has a bigger effect on your choices than it does in most states.

South Dakota also experienced a relatively steady 2026 compared with much of the country. Here's what your choices look like and how to figure out which fits.

How it looks from a South Dakota kitchen table

When you work for yourself, you're responsible for finding and paying for coverage. There's no employer helping with premiums, and you must estimate the income used to determine your eligibility for public assistance. If your earnings fluctuate with the seasons, which is common in agriculture, construction and tourism, getting that estimate right really matters.

For South Dakota residents, HealthCare.gov is the federal marketplace where you enroll. The 2026 enrollment window opened November 1, 2025 and ended January 15, 2026. Once that window closes, you generally need a qualifying life event, like losing existing insurance, to enroll before the following fall.

Choice one: Medicaid, now that the state has expanded

South Dakota waited longer than most states to expand Medicaid, and voters made that decision rather than lawmakers. In 2022, voters passed a ballot measure changing the state constitution. Starting July 1, 2023, adults earning up to 138% of the federal poverty level became eligible for expanded coverage.

For South Dakotans working for themselves, that creates a safety net that wasn't previously available when business earnings drop significantly. Medicaid has specific rules for calculating self-employment income, so check how those rules apply to you. As your business picks up again, make sure you report any income changes.

Those rules could change again. In November 2024, voters passed Constitutional Amendment F with 56% supporting it and 44% opposing it, giving lawmakers authority to require work from expansion Medicaid recipients. South Dakota had no such requirement operating as of mid-2026. However, a federal law enacted in 2025 requires adults covered by Medicaid expansion in every expansion state to satisfy work or community-engagement rules starting January 1, 2027. Voters will also consider Amendment I in November 2026, which would condition expansion on federal funding remaining at a match of at least 90%. If your income is close to the eligibility cutoff, watch both developments carefully.

Choice two: HealthCare.gov with a federal credit

If your income exceeds Medicaid eligibility, a marketplace plan with subsidies is generally the first place I'd look. Your federal premium tax credit is calculated using household details, expected income and local plan costs. You can use that credit toward monthly premiums or claim it when filing taxes.

Taking the credit monthly means you're using an estimate before your actual income is known. The IRS reconciles everything when you file taxes, so earning more than expected could leave you repaying some assistance. Enhanced federal credits expired after 2025, bringing back a firm income cutoff for eligibility. If your earnings fluctuate, take a look at our subsidy cliff guide before choosing your estimate.

With marketplace coverage, your medical history cannot prevent enrollment, and plans include a required set of essential benefits. That's especially important when someone in your household has an ongoing condition. Still, other coverage routes exist, and Sam Jaber can help you compare both approaches.

Choice three: marketplace coverage at full price

Even if you earn too much for premium credits, you can still enroll through the marketplace. You'll cover the entire premium yourself while retaining guaranteed enrollment and the required benefits.

For 2026, South Dakota's benchmark plan averaged $655 monthly for someone age 40. That's the second-lowest-cost silver plan used to determine federal assistance. Paying that entire amount can strain a household budget, even though South Dakota's increase was relatively small compared with other states this year.

Choice four: bridges for a transition

Keeping coverage from your previous job. Federal COBRA generally covers businesses employing at least 20 people. South Dakota also provides continuation rights for workers leaving employers with fewer than 20 employees after a qualifying event. Under state law, coverage generally can continue for up to 18 months. Confirm your exact eligibility period and election deadline with your previous employer or insurer. You'll be responsible for the entire group premium. Before deciding, compare the costs using our coverage between jobs guide.

Short-term and medically underwritten plans. Coverage purchased outside the marketplace may involve medical questions, and insurers can reject applicants or limit benefits based on their answers. These plans aren't required to provide marketplace-standard benefits. South Dakota also sets rules governing short-term policy duration and renewals. Before using one temporarily, verify the latest requirements with the insurer or state. You can learn more in what medically underwritten means.

South Dakota's 2026 numbers and its thin market

For 2026, approved rate filings from South Dakota's three marketplace insurers showed an average increase of approximately 6.4%. Compared with increases reaching 20% or higher in many other states, South Dakota had a relatively manageable year.

The more important concern is how many plans you can access. Two of the three insurers serve all of South Dakota, while the remaining company operates in 42 of the state's 66 counties. Residents outside those 42 counties can compare only two insurers. That's why checking HealthCare.gov for your specific county tells you more than statewide averages.

Remember, the $655 benchmark premium and 6.4% increase represent statewide averages for 2026. Your actual cost varies with your age, county, household and earnings. Rates for 2027 go through their own filing and approval process.

No personal state income tax. Because South Dakota doesn't impose one, there's no state-level deduction to consider. Your relevant deduction is the federal self-employed health insurance deduction.

No insurance requirement. South Dakota imposes neither a coverage mandate nor a state fine for remaining uninsured. The federal penalty is also zero.

South Dakota’s 2026 marketplace sells a PPO medical plan in every county (66 of 66). You can still get a nationwide PPO plan in South Dakota through Sam Jaber. See South Dakota in the state-by-state PPO table.

Deciding in South Dakota

Start by projecting your annual income, then find out which insurers offer coverage in your particular county.

• Start with insurers serving your county. Some areas have just two companies available instead of three.
• Account for seasonal earnings when projecting annual income, and revise your application whenever that estimate changes.
• Verify your doctors and hospital participate in the network, particularly where your area has limited insurer choices.
• Watch the upcoming vote. Amendment I on the November 2026 ballot may change Medicaid expansion coverage.

A licensed advisor can compare coverage choices using your income and county, without needing to ask medical questions initially.

Common questions