Self-employed health insurance in South Dakota: a small market with a mild 2026 (2026)
A self-employed South Dakotan has four realistic choices: Medicaid if income is low, a HealthCare.gov plan with a federal premium tax credit, a marketplace plan at full price, or a temporary bridge such as continuing an old employer's coverage. The state's marketplace is small, with three insurers, and one of them does not sell in every county, so where you live shapes your choices here more than in most states.
South Dakota also had a calmer 2026 than much of the country. Below is how each choice works here and how to decide between them.
How it looks from a South Dakota kitchen table
Being your own boss means buying your own coverage. There is no employer contribution, and the income figure that unlocks public help is one you have to project yourself. If your revenue is seasonal, as it often is in agriculture, construction or tourism, that projection deserves real care.
South Dakota uses HealthCare.gov, the federal marketplace. Open enrollment for 2026 coverage ran from November 1, 2025 to January 15, 2026. After it closes, a special enrollment period tied to a life event, such as losing other coverage, is usually the only way in until the next fall.
Choice one: Medicaid, now that the state has expanded
South Dakota expanded Medicaid later than most states, and it did so by vote of the people rather than by the legislature. A 2022 ballot measure amended the state constitution, and expanded coverage for adults with income up to 138% of the federal poverty level began July 1, 2023.
That gives self-employed South Dakotans something they did not have before: a place to land in a year when business income falls very low. Medicaid counts self-employment income under its own rules, so ask how yours will be treated, and report changes as your income recovers.
The rules may still shift. In November 2024, voters approved Constitutional Amendment F by 56% to 44%, which allows the legislature to impose work requirements on people covered through the expansion. No South Dakota work requirement was in effect as of mid-2026, but a 2025 federal law requires expansion adults in every expansion state to meet a work or community-engagement requirement beginning January 1, 2027. Another measure on the November 2026 ballot, Amendment I, would make the expansion depend on federal funding staying at a 90% match or higher. If you are near the income line, keep an eye on both.
Choice two: HealthCare.gov with a federal credit
Above the Medicaid limit, most self-employed households start with a subsidized marketplace plan. The premium tax credit depends on your household, your projected income and local prices, and it can be applied monthly or claimed on your return.
A monthly credit is an advance on a number that is not final. At tax time the IRS settles it against your real income, and a better-than-expected year can mean paying part of it back. With the enhanced federal credits gone after 2025, eligibility again ends sharply at a set income level. Read our subsidy cliff guide if your income tends to jump around.
Marketplace plans accept everyone regardless of health history and cover a standard package of essential benefits. That makes them the reference point for anyone with ongoing medical needs.
Not sure where your income puts you? A two-minute check shows which South Dakota choices fit your household. It asks no health questions and does not commit you to anything.
Check my South Dakota choicesChoice three: marketplace coverage at full price
Above the credit range, the marketplace is still open to you. You pay the entire premium but keep guaranteed acceptance and standard benefits.
The 2026 benchmark plan in South Dakota, the second-lowest-cost silver plan used to calculate federal help, averaged $655 a month for a 40-year-old. That is a real cost for a household paying all of it, although this year's increase was modest compared with many states.
Choice four: bridges for a transition
Continuing a former employer's plan. Federal COBRA generally applies to employers with 20 or more workers. South Dakota has its own continuation law for employers with fewer than 20 employees, giving people who leave a smaller workplace a way to keep the group plan after a qualifying event. South Dakota law generally provides up to 18 months. Ask the insurer or former employer exactly how long it lasts for you and when you must elect it. You will pay the full group premium. Our guide to coverage between jobs lists other options to price against it.
Underwritten and short-term coverage. Plans outside the marketplace may ask health questions and decline or restrict coverage based on the answers, and their benefits do not follow marketplace rules. South Dakota regulates how long short-term plans can last and whether they can be renewed, so confirm the current rules with the insurer or the state before you rely on one as a bridge. For the basics, see what medically underwritten means.
South Dakota's 2026 numbers and its thin market
South Dakota's three marketplace insurers had approved 2026 rate filings that averaged about a 6.4% increase. Many states saw increases of 20% or more, so this was a noticeably mild year here.
Choice is the bigger issue. Of the three insurers, two offer plans statewide. The third covers 42 of South Dakota's 66 counties. In the counties outside that footprint, you have only two companies to choose between. That makes checking your own county's plans on HealthCare.gov more important than any statewide figure.
The 6.4% figure and the $655 benchmark are 2026 statewide averages. What you pay depends on age, county, household and income, and 2027 rates are filed and approved separately.
No state income tax. South Dakota has no personal income tax, so there is no state deduction question at all. The federal self-employed health insurance deduction is the only one that applies.
No mandate. South Dakota does not require coverage and charges no state penalty. The federal penalty is zero.
Deciding in South Dakota
Estimate your income, then check which companies actually sell in your county.
| Where you land | First choice to check | South Dakota specifics |
|---|---|---|
| Income up to 138% of poverty | Medicaid under the 2023 expansion | Amendment F allows state work requirements, and federal law requires them starting January 1, 2027 |
| Income inside the credit range | HealthCare.gov with a premium tax credit | Reconciled when you file, so estimate with care |
| Income above the credit range | Full-price marketplace plans | 2026 rates rose about 6.4% on average; some counties have only two insurers |
| Leaving an employer with under 20 workers | South Dakota state continuation | Limited period and full premium; confirm the length and deadline directly |
- Check your county's insurers first. In part of the state, the list is two, not three.
- Plan for seasonal income when you estimate the year, and update your application if it changes.
- Confirm your doctors and hospital are in network, which matters even more when few insurers serve an area.
- Follow the ballot. The November 2026 vote on Amendment I could affect expansion coverage.
A licensed advisor can lay out these choices for your county and income, with no health questions needed at the start.
Want to know which South Dakota choices fit you? Answer a few questions about your household and income, and see your options before you spend a dollar.
Start the two-minute checkCommon questions
Did South Dakota expand Medicaid?
Yes. Voters approved expansion through a 2022 constitutional amendment, and coverage for adults with income up to 138% of the federal poverty level began July 1, 2023. A 2024 amendment allows the legislature to add work requirements, and a 2025 federal law requires them for expansion adults nationwide beginning January 1, 2027. None were in effect in South Dakota as of mid-2026.
How many health insurance companies are on the South Dakota marketplace?
Three for 2026. Two sell plans statewide, and the third covers 42 of the state's 66 counties, so some counties have only two insurers to choose from.
How much did South Dakota marketplace premiums rise in 2026?
Approved 2026 rate filings averaged an increase of about 6.4%, much lower than many states. The 2026 benchmark plan for a 40-year-old averaged $655 a month.
Does South Dakota tax income, and does that affect my health insurance deduction?
South Dakota has no personal income tax, so there is no state deduction to take. The federal self-employed health insurance deduction is the one that matters, and a tax preparer can confirm whether you qualify.