South Dakota Medicaid Expansion: Eligibility & How to Apply

Updated July 2026 · SouthdakotaPlanFinder.com — Licensed Health Insurance Producer (NPN #21249133)

South Dakota's landscape for affordable health insurance dramatically changed in 2023 when the state expanded its Medicaid program. This expansion means that many low-income adults who previously had no clear path to affordable coverage now qualify for comprehensive health benefits with little to no out-of-pocket costs. Understanding the new eligibility criteria and how to apply is crucial for South Dakota residents seeking health coverage. This guide will walk you through who qualifies, how to enroll, and what options are available if your income falls above the Medicaid threshold.

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Understanding South Dakota's Medicaid Expansion

Prior to 2023, Medicaid eligibility in South Dakota was primarily restricted to specific categories of residents, such as pregnant women, children, and individuals with disabilities. The expansion, approved by a ballot measure, extended coverage to nearly all adults aged 19-64 with household incomes up to 138% of the Federal Poverty Level (FPL). This change aligns South Dakota with the majority of states that have adopted the Affordable Care Act's (ACA) Medicaid expansion provisions, significantly reducing the number of uninsured residents. This means that if you are an adult in South Dakota, and your income falls within the expanded guidelines, you may now be eligible for the "Medicaid expansion (approved by ballot measure, effective July 2023)" program. Unlike employer-sponsored plans or marketplace plans, Medicaid typically offers comprehensive benefits with no monthly premiums and minimal to no cost-sharing for services, making it a critical safety net for low-income individuals and families.

Income & Eligibility for South Dakota Medicaid and ACA Subsidies

Your household income, relative to the Federal Poverty Level (FPL), determines whether you qualify for South Dakota's Medicaid expansion or for subsidies to help pay for a private health plan through HealthCare.gov. It's important to accurately estimate your Modified Adjusted Gross Income (MAGI) to determine your eligibility. The table below outlines the 2026 FPL thresholds for various household sizes, which are key to understanding your coverage options in South Dakota:
Household Size 100% FPL 138% FPL 150% FPL 200% FPL 250% FPL 400% FPL
1 person$15,060$20,783$22,590$30,120$37,650$60,240
2 people$20,440$28,207$30,660$40,880$51,100$81,760
3 people$25,820$35,632$38,730$51,640$64,550$103,280
4 people$31,200$43,056$46,800$62,400$78,000$124,800
5 people$36,580$50,480$54,870$73,160$91,450$146,320
6 people$41,960$57,905$62,940$83,920$104,900$167,840
7 people$47,340$65,329$71,010$118,350$189,360
8 people$52,720$72,754$79,080$131,800$210,880
+1 additional+$5,380+$7,424+$8,070+$10,760+$13,450+$21,520
Source: HHS 2025 Federal Poverty Guidelines (applied to 2026 ACA plan year). If your household income is at or below 138% FPL, you will likely qualify for South Dakota's Medicaid expansion. If your income is above 138% FPL but below 400% FPL (or higher, thanks to current subsidy rules), you will likely qualify for significant premium tax credits (APTC) to reduce the cost of a private plan on HealthCare.gov.

Recommended Plan Tiers Based on Income in South Dakota

Choosing the right health plan often comes down to balancing monthly premiums with potential out-of-pocket costs. In South Dakota, your income level will largely guide the most advantageous plan tier.
Income Level (1 Person) FPL % (1 Person) Recommended Tier Monthly Net Premium Why
Under $20,783 Under 138% FPL South Dakota Medicaid ~$0 Eligible for "Medicaid expansion (approved by ballot measure, effective July 2023)" with comprehensive benefits and typically no premiums or cost-sharing.
$20,783–$22,590 138–150% FPL Silver (CSR Tier 1) ~$0–$30 Eligible for maximum premium subsidies and Cost-Sharing Reductions (CSR) that significantly lower deductibles, copays, and out-of-pocket maximums.
$22,590–$30,120 150–200% FPL Silver (CSR Tier 2) ~$30–$100 Still receives strong premium subsidies and substantial CSRs, making Silver plans much more valuable than Bronze, even with slightly higher premiums.
$30,120–$37,650 200–250% FPL Silver (CSR Tier 3) or Gold ~$100–$200 Qualifies for some CSRs on Silver plans. Gold plans might be better if you expect high medical use, as they have lower deductibles before CSR.
$37,650–$60,240 250–400% FPL Gold or HDHP Varies Premium subsidies still available but no CSR. Gold plans offer lower out-of-pocket costs; HDHP + HSA is great for healthier individuals for tax benefits.
Above $60,240 Above 400% FPL HDHP+HSA (off-exchange) Varies Reduced or no premium subsidies. HDHP with a Health Savings Account (HSA) offers triple tax advantages for those managing their own healthcare costs.
Net premium after APTC. Single adult, benchmark Silver reference. Actual premium varies by state and plan year.

The Impact of Medicaid Expansion on South Dakota Residents

The Medicaid expansion in South Dakota has a profound impact, particularly for those earning between 100% and 138% of the Federal Poverty Level. Before expansion, individuals in this income bracket in non-expansion states often fell into a "coverage gap," earning too much for traditional Medicaid but too little to qualify for ACA marketplace subsidies. With South Dakota's expansion, this gap is eliminated for most adults. For eligible individuals, the "Medicaid expansion (approved by ballot measure, effective July 2023)" program provides robust health coverage without the financial burden of monthly premiums, high deductibles, or significant copayments. This means access to doctors, specialists, hospital care, prescription drugs, and mental health services becomes a reality for many who previously couldn't afford it. The program also covers pregnant women with income up to 138% FPL, and children through its CHIP program up to the same threshold, ensuring critical care for vulnerable populations. This comprehensive, low-cost coverage is a cornerstone of South Dakota's commitment to improving public health outcomes.

Health Insurance in South Dakota: What You Need to Know

South Dakota operates its health insurance marketplace through HealthCare.gov, the federal exchange. This platform allows residents to compare and enroll in plans from various private carriers, often with significant financial assistance. The marketplace in South Dakota offers a variety of plan types, including Exclusive Provider Organization (EPO), Health Maintenance Organization (HMO), and Preferred Provider Organization (PPO) plans, giving consumers flexibility in choosing their network and provider access. For those who qualify for Medicaid, enrollment is managed directly by the state's Department of Social Services. However, HealthCare.gov also serves as a portal, allowing you to submit an application that will be forwarded to the state for Medicaid eligibility determination. This streamlined process helps ensure that South Dakota residents can find the most affordable and appropriate coverage based on their income and household size, whether through Medicaid or subsidized marketplace plans.

Steps to Secure Your Health Coverage in South Dakota

Navigating your health insurance options in South Dakota, whether through Medicaid or the ACA marketplace, can be straightforward with these steps:
  1. Estimate Your Annual Household Income: Calculate your projected Modified Adjusted Gross Income (MAGI) for the current year. This figure is crucial for determining both Medicaid eligibility and the amount of premium tax credits you might receive on HealthCare.gov.
  2. Check Medicaid Eligibility: If your income is at or below 138% of the Federal Poverty Level, you likely qualify for South Dakota's Medicaid expansion. You can apply directly through the South Dakota Department of Social Services website.
  3. Explore HealthCare.gov Options: If your income is above the Medicaid threshold, visit HealthCare.gov to browse available plans. You will be able to see plans and estimated subsidies based on your income, household size, and location.
  4. Compare Plans and Enroll: Pay close attention to plan metal tiers (Bronze, Silver, Gold, Platinum), deductibles, copayments, and out-of-pocket maximums. Remember that Silver plans offer valuable Cost-Sharing Reductions (CSR) if your income is between 100% and 250% FPL.
  5. Report Any Income Changes: If your income or household size changes during the year, report it to HealthCare.gov or the Department of Social Services immediately. This ensures your subsidies or eligibility remain accurate, preventing potential tax issues or coverage gaps.
A licensed health insurance producer can provide free, unbiased assistance to help you compare plans, understand your subsidy eligibility, and complete the enrollment process without any fees to you.

Frequently Asked Questions

Who is eligible for Medicaid in South Dakota after expansion?

In South Dakota, adults with a household income up to 138% of the Federal Poverty Level (FPL) are now eligible for Medicaid, following the state's expansion in 2023. For a single person, this is approximately $20,783 annually in 2026; for a family of four, it's about $43,056. This expansion includes comprehensive health benefits with typically no monthly premiums or deductibles.

How do I apply for Medicaid in South Dakota?

You can apply for Medicaid in South Dakota through several channels. The primary method is via the South Dakota Department of Social Services website. You can also apply by mail or in person at a local DSS office. Alternatively, you can apply through HealthCare.gov, the federal marketplace, which will automatically forward your application to the state if your income appears to qualify you for Medicaid.

What if my income is above the Medicaid expansion limit in South Dakota?

If your household income is above 138% FPL in South Dakota, you will likely qualify for significant financial assistance to purchase a private health insurance plan through HealthCare.gov. Premium tax credits (APTC) are available for those earning between 100% and 400%+ FPL, lowering your monthly premium. If your income is also below 250% FPL, you may qualify for Cost-Sharing Reductions (CSR) on Silver plans, which reduce your deductibles, copays, and out-of-pocket maximums.

Does South Dakota Medicaid cover pregnant women and children?

Yes, South Dakota's Medicaid expansion fully covers pregnant women and children. Pregnant women with household incomes up to 138% FPL are eligible for comprehensive coverage, including prenatal care, labor and delivery services, and postpartum care. Additionally, South Dakota's Children's Health Insurance Program (CHIP) covers children in households up to 138% FPL, ensuring access to essential health services for the state's youngest residents.

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