South Dakota Health Insurance When Turning 65

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

Turning 65 marks a significant milestone, especially when it comes to health insurance. For most Americans, this age signifies eligibility for Medicare, the federal health insurance program. However, navigating the transition from employer-sponsored coverage, an Affordable Care Act (ACA) marketplace plan, or even being uninsured to Medicare can be complex. In South Dakota, understanding your options, enrollment periods, and potential penalties is crucial to ensure continuous, affordable coverage. This guide will walk you through the essential steps and considerations for securing health insurance as you approach and pass your 65th birthday.

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Transitioning to Medicare: Your Primary Option at 65

For most individuals in South Dakota, turning 65 means becoming eligible for Medicare. This federal program provides health coverage for people 65 or older, certain younger people with disabilities, and people with End-Stage Renal Disease (ESRD) or Amyotrophic Lateral Sclerosis (ALS). Medicare is structured into different parts: Understanding when and how to enroll in these parts is critical to avoid gaps in coverage and potential late enrollment penalties.

Income and Eligibility for Bridge Coverage or Assistance

While Medicare becomes your primary option at 65, your income can still play a role, especially if you need bridge coverage before Medicare starts, or if you qualify for assistance with Medicare costs. For those under 65, or for a spouse under 65, ACA subsidies are based on household income relative to the Federal Poverty Level (FPL). For 2026, the Federal Poverty Level (FPL) for the 48 contiguous states and D.C. is a key benchmark for determining eligibility for ACA subsidies or South Dakota Medicaid:
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$94,680$118,350$189,360
8 people$52,720$72,754$79,080$105,440$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).

Once you are eligible for Medicare, you generally cannot receive federal subsidies (APTC) for an ACA marketplace plan. If you are already enrolled in an ACA plan and become Medicare eligible, you should cancel your marketplace plan to avoid potential tax issues. However, if your spouse is under 65 and needs coverage, they may still qualify for subsidies on an ACA plan.

Health Plan Considerations Around Age 65

The best health plan strategy when approaching 65 depends on several factors, including your current coverage, employment status, and health needs. The following table outlines general recommendations:
Situation FPL % (if applicable) Recommended Path Key Consideration
Not yet 65, need coverage Below 138% FPL South Dakota Medicaid South Dakota expanded Medicaid; adults up to 138% FPL may qualify for $0-cost coverage.
Not yet 65, need coverage 138% - 250% FPL ACA Silver Plan with CSR Substantial subsidies (APTC) and Cost-Sharing Reductions (CSR) make Silver plans highly affordable with lower deductibles/OOP maximums.
Not yet 65, need coverage 250% - 400%+ FPL ACA Gold, Silver, or HDHP APTC helps reduce premiums; Gold for high expected use, HDHP+HSA for healthy individuals seeking tax advantages.
Turning 65, no employer coverage N/A (Medicare eligible) Enroll in Medicare Parts A & B Enroll during your Initial Enrollment Period to avoid penalties. Consider Part C or D.
Turning 65, still working with employer coverage N/A Delay Part B, Enroll in Part A You can often delay Part B enrollment if your employer coverage is "creditable." Enroll in Part A (usually free) at 65.
Need supplemental Medicare coverage N/A Medicare Advantage (Part C) or Medigap Choose a plan that fits your budget and health needs to cover gaps in Original Medicare.

This table provides general guidance. Individual situations may vary. Consult a licensed agent for personalized advice.

The Critical Importance of Medicare Enrollment Periods

The most critical aspect of health insurance when turning 65 is understanding and adhering to Medicare's enrollment periods. Missing these deadlines can lead to permanent late enrollment penalties and gaps in coverage. It's vital to assess your current health coverage and future plans well in advance of your 65th birthday to ensure a smooth transition to Medicare.

Health Insurance in South Dakota: What Seniors Need to Know

South Dakota utilizes the federal marketplace, HealthCare.gov, for individuals and families seeking ACA plans. For those under 65, or spouses under 65, the marketplace offers various plan types, including EPO, HMO, and PPO structures. South Dakota expanded Medicaid in 2023, meaning adults with incomes up to 138% of the Federal Poverty Level may qualify for comprehensive, low-cost coverage through the Medicaid expansion (approved by ballot measure, effective July 2023) program. This expansion also ensures that pregnant women and children in households up to 138% FPL are covered. For seniors, South Dakota's Medicaid program may also offer assistance through Medicare Savings Programs to help cover Medicare premiums and cost-sharing for those who meet specific income and asset limits.

Enrollment Steps for Turning 65

Navigating the transition to Medicare and other health insurance options requires careful planning. Here are the steps to take:
  1. Understand Your Medicare Initial Enrollment Period (IEP): Mark your calendar for the seven-month window around your 65th birthday. This is your primary time to enroll in Medicare Parts A and B.
  2. Assess Your Current Coverage: Determine if your current employer-sponsored health plan is "creditable" and if you can delay Medicare Part B enrollment without penalty. If you have an ACA plan, understand that subsidies will end once you're Medicare-eligible.
  3. Enroll in Medicare Parts A & B: If you don't have creditable employer coverage, enroll in Medicare Parts A and B during your IEP to avoid late enrollment penalties. You can do this through the Social Security Administration website.
  4. Consider Supplemental Coverage: Once enrolled in Original Medicare (Parts A & B), decide if a Medicare Advantage (Part C) plan or a Medigap (Medicare Supplement Insurance) plan, along with a Part D prescription drug plan, is right for you. These private plans help cover costs that Original Medicare doesn't.
  5. Seek Expert Guidance: If you're unsure about your options or the enrollment process, contact a licensed health insurance producer. They can provide free, unbiased advice on Medicare plans and any bridge coverage options available in South Dakota.
A licensed agent can help you compare plans, understand your eligibility, and enroll in the coverage that best fits your needs, all at no cost to you.

Frequently Asked Questions

What are my health insurance options in South Dakota when I turn 65?
When you turn 65 in South Dakota, your primary health insurance option becomes Medicare. You'll typically enroll in Medicare Parts A and B during your Initial Enrollment Period. If you need coverage before Medicare starts or supplemental coverage, you might consider an ACA marketplace plan as a bridge or a Medicare Advantage (Part C) or Medigap plan.
When should I enroll in Medicare in South Dakota?
Your Initial Enrollment Period (IEP) for Medicare begins three months before your 65th birthday month, includes your birthday month, and extends for three months after, totaling seven months. For example, if your birthday is in July, your IEP runs from April 1st to October 31st. Enrolling during this window helps you avoid late enrollment penalties for Part B.
Can I use an ACA plan if I'm eligible for Medicare in South Dakota?
Once you become eligible for Medicare, you generally cannot receive federal subsidies (APTC) for an ACA marketplace plan. If you are already enrolled in an ACA plan, you should cancel it when your Medicare coverage begins. However, if you are not yet 65 but need bridge coverage, an ACA plan may be an excellent choice.
What is the penalty for late enrollment in Medicare Part B?
If you don't enroll in Medicare Part B when you're first eligible and don't have other creditable coverage (like employer-sponsored insurance), you may face a late enrollment penalty. Your monthly premium for Part B could increase by 10% for each full 12-month period you could have had Part B but didn't sign up. This penalty is typically permanent.
Does South Dakota Medicaid cover individuals turning 65?
South Dakota expanded Medicaid in 2023, covering adults with incomes up to 138% of the Federal Poverty Level. For individuals turning 65, Medicaid may provide assistance with Medicare premiums and cost-sharing through Medicare Savings Programs if income and asset limits are met. Full Medicaid eligibility for those 65 and older typically depends on specific income and resource criteria for seniors, often related to long-term care needs.

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