Health coverage guide · Texas & Florida
Medicare vs. ACA Marketplace (2026): Which One Are You Eligible For?
For most people this isn't really a choice — it's about age and eligibility. The ACA Marketplace covers people under 65 (and those not yet eligible for Medicare), often with income-based subsidies that sharply cut the premium. Medicare is for people 65+ or with qualifying disabilities. When you turn 65 and become eligible for Medicare, you generally should move off a Marketplace plan, because Marketplace subsidies end once you're eligible for premium-free Part A, and keeping both wastes money. The key is timing the switch correctly to avoid lifelong late penalties.
Written & reviewed by the licensed agents at Giron Agency — Matt Giron, licensed in Texas — for the 2026 plan year.
Medicare vs. ACA Marketplace (Obamacare) at a glance
| Medicare | ACA Marketplace (Obamacare) | |
|---|---|---|
| Who it's for | Age 65+, or qualifying disability/ESRD | Under 65 and not eligible for Medicare |
| Income-based subsidies | Low-income help via Medicaid/MSP/Extra Help | Premium tax credits on a sliding scale |
| Cost driver | Part B premium ($202.90 in 2026) + plan choice | Income + household size + plan tier |
| Networks | Original Medicare = nationwide; Advantage = network | Plan network (HMO/EPO common) |
| When you enroll | Initial Enrollment around your 65th birthday | Open Enrollment Nov 1–Jan 15, or a Special Enrollment |
| Penalty risk | Lifelong Part B/D penalty if you enroll late | No late penalty, but coverage gaps cost you |
Choose Medicare if…
- ✓You're turning 65 or already are
- ✓You qualify for Medicare through disability or ESRD
- ✓You want to lock in Medicare and avoid late penalties
Choose ACA Marketplace (Obamacare) if…
- ✓You're under 65 with no access to Medicare
- ✓You may qualify for premium tax credits based on income
- ✓You retired early and need a bridge to 65
- ✓You're self-employed or between employer plans
Turning 65 on a Marketplace plan? Don't miss the switch
The most common (and costly) mistake we fix is people staying on a subsidized Marketplace plan past 65. Once you're eligible for premium-free Part A, your Marketplace premium tax credit generally ends — and if you delay Medicare Part B without other qualifying coverage, you can be hit with a Part B late-enrollment penalty that lasts the rest of your life. Your Medicare Initial Enrollment Period runs for seven months around your 65th birthday; that's the window to get it right.
If you're under 65, the Marketplace is usually your best individual option, and many people dramatically overpay because they never checked their subsidy. We can estimate your premium tax credit and compare plans for free.
Texas & Florida note: Both Texas and Florida use the federal HealthCare.gov marketplace, and Florida in particular has one of the largest ACA enrollments in the country. Neither state expanded Medicaid in the traditional way, so subsidy eligibility and the 'coverage gap' work differently here — we'll tell you exactly where you land.
Not sure which fits you?
Free and no pressure. Matt compares every Texas and Florida option for you and only recommends what fits your situation.
Frequently Asked Questions
Can I stay on Obamacare instead of Medicare at 65?
You usually shouldn't. Once you're eligible for premium-free Part A, Marketplace subsidies generally end and delaying Part B can trigger a lifelong penalty. There are narrow exceptions, so check with a licensed agent before deciding.
Is the ACA Marketplace cheaper than Medicare?
For people under 65 with a subsidy, Marketplace coverage can be very affordable. But at 65 Medicare is almost always the right move — keeping a Marketplace plan past eligibility usually costs more and risks penalties.
When is ACA Open Enrollment for 2026?
Marketplace Open Enrollment runs Nov 1 through Jan 15 in Texas and Florida (enroll by Dec 15 for a Jan 1 start). Outside that window you need a qualifying life event for a Special Enrollment Period.