PEBA 31-Day Carve-Out: The Retirement Decision SC State Employees Can’t Undo

A woman from Ladson sat across from me last spring - 32 years with the Department of Health and Environmental Control, healthy as a horse, ready to retire. She had exactly nine days left on her 31-day PEBA decision window. She didn’t even know the window existed until a friend mentioned it at church. Nine days to make a decision that would affect her healthcare costs for the rest of her life.

She’s not unusual. I see this with South Carolina state employees, teachers, and county workers every month. They spend years planning their SCRS pension. They calculate their sick leave payout. They pick a retirement date. But almost nobody puts the same effort into the health insurance decision that hits them the moment Medicare kicks in. And unlike most insurance decisions, this one has real teeth - make the wrong call or miss the window entirely, and the consequences can follow you for decades.

What the 31-Day Window Actually Is

When a South Carolina state employee retires and becomes eligible for Medicare, PEBA (the Public Employee Benefit Authority) gives them a 31-day window to decide what happens to their health insurance. This window starts on your Medicare Part B effective date, not your retirement date. Those two dates are often different, and confusing them is one of the most common mistakes I see.

Here’s what happens during those 31 days: PEBA automatically enrolls you in their Medicare Supplemental plan unless you contact them and opt out. If you do nothing - if you’re busy moving, traveling, dealing with the emotional weight of leaving a career - you’re in PEBA Medicare Supplemental by default. The first premium deduction shows up in your retirement check, and many retirees are genuinely surprised by it.

The PEBA Medicare Supplemental plan works alongside Original Medicare (Parts A and B) as a Medigap-style policy. It covers the deductibles, copays, and coinsurance that Medicare doesn’t. It’s a real plan with real benefits. But it’s not the only option, and for many healthy retirees, it’s not the cheapest one either.

Source: PEBA Medicare Supplemental Plan details and PEBA Retirement, Disability and Death handbook (2026)

What Happens If You Stay on PEBA Medicare Supplemental

If you take no action during the 31-day window, or if you actively choose to stay, you’ll be enrolled in PEBA’s Medicare Supplemental plan. Here’s what that means:

What you get:

• PEBA covers most Medicare deductibles and coinsurance, similar to a private Medigap plan
• Prescription drug coverage through SilverScript (Medicare Part D) is automatically included for Medicare-eligible members enrolled in the State Health Plan
• You keep your relationship with PEBA - same customer service, same system you’ve used for your career
• Your premium is deducted directly from your SCRS or PORS retirement check

The cost reality: PEBA publishes premium schedules for funded and partially funded retirees each plan year. For 2026, funded retiree premiums for Medicare Supplemental vary by coverage tier - subscriber only, subscriber plus spouse, and family. The exact premium depends on whether you’re a fully funded retiree (you met PEBA’s service requirements for employer-subsidized coverage) or partially funded.

The critical thing to understand: PEBA premiums are set by the legislature and PEBA’s board, not by the competitive market. Private Medigap carriers compete for your business. PEBA doesn’t have to.

Source: 2026 Monthly premiums for funded retirees

What Happens If You Opt Out

If you contact PEBA within the 31-day window and opt out of Medicare Supplemental, you leave the PEBA health plan entirely. You keep Original Medicare (Parts A and B), and you’re free to buy a private Medigap plan from any carrier licensed in South Carolina.

The upside: Private Medigap Plan G is the gold standard for new Medicare enrollees. It covers everything except the annual Part B deductible ($257 in 2026). In the Summerville and greater Charleston area, a 65-year-old can find Plan G premiums starting around $96 per month from Farm Bureau Insurance, with other strong options from Mutual of Omaha, BlueCross BlueShield of SC, and Aetna typically ranging from $130 to $200 per month. That’s competitive pricing that PEBA has to work hard to match.

The downside: Once you leave PEBA, getting back in isn’t guaranteed. You can apply to re-enroll during PEBA’s October open enrollment period, but PEBA may require medical underwriting. If you’ve developed diabetes, been diagnosed with cancer, had a cardiac event, or accumulated other health conditions since opting out, PEBA can deny your re-enrollment or impose limitations. The guaranteed-access door closes behind you when you walk out.

You’ll also need to arrange your own standalone Medicare Part D (prescription drug) plan, since you’ll no longer be covered under PEBA’s SilverScript arrangement. Part D plans in South Carolina typically run $15 to $75 per month depending on the formulary and carrier.

Source: Medicare.gov Medigap cost information and MoneyGeek Best Medicare Supplement Plans in South Carolina (2026)

The Real Numbers: PEBA vs. Private Medigap

This is where the decision gets concrete. Let me lay out what a typical comparison looks like for a 65-year-old retiree in Dorchester County:

Option A - Stay on PEBA Medicare Supplemental:

• Monthly premium: varies by funding status and tier (check your specific rate on PEBA’s premium schedule)
• Prescription drug coverage: included via SilverScript
• No shopping required - automatic enrollment
• Premium stability controlled by PEBA board, not market competition

Option B - Opt out and buy private Medigap Plan G:

• Monthly Medigap premium: $96 to $200/month depending on carrier
• Monthly Part D premium: $15 to $75/month (separate plan)
• Total monthly cost: approximately $111 to $275/month
• Annual Part B deductible: $257 (the only thing Plan G doesn’t cover)
• Freedom to switch Medigap carriers later (subject to underwriting)

For healthy retirees, private Medigap Plan G often comes out ahead by $50 to $150 per month compared to PEBA Medicare Supplemental. Over ten years, that difference compounds: $50/month savings becomes $6,000. At $150/month, it’s $18,000. That’s real money in retirement.

But those savings assume you stay healthy enough that the underwriting risk of leaving PEBA never catches up to you. And that’s the core tension of this decision.

When Staying on PEBA Makes Sense

Not everyone should opt out. PEBA Medicare Supplemental is the stronger choice when:

• You have complex health needs. If you’re managing multiple chronic conditions, have a history of cancer, or anticipate significant medical needs, the security of guaranteed PEBA coverage without underwriting risk is worth paying more for.
• You value bundled prescription drug coverage. PEBA’s automatic SilverScript enrollment means one less thing to manage. If you take multiple medications and want the simplicity of integrated coverage, staying put has value.
• Your spouse is also on PEBA. If both of you are Medicare-eligible and on PEBA, the family tier pricing and coordinated coverage may be more efficient than buying two separate private Medigap plans plus two Part D plans.
• You don’t want to think about it. Honestly, some retirees just want their health insurance handled. They’ve had PEBA for 25 or 30 years, they know the system, and the premium difference isn’t worth the stress of shopping the private market. That’s a legitimate choice.

When Opting Out Saves Real Money

The math tilts toward private Medigap when:

• You’re healthy at retirement. A clean health history means you’ll qualify for the best private Medigap rates. Farm Bureau at $96/month for Plan G is hard to beat.
• You’re retiring at or near 65. You’re entering private Medigap at the youngest possible age, which means the lowest premiums. South Carolina carriers use attained-age rating, so starting low matters.
• You only need subscriber-only coverage. Single coverage on a private Plan G is where the savings are most dramatic. The math shifts for couples.
• You’re comfortable managing separate plans. You’ll need to shop for and maintain a standalone Part D plan alongside your Medigap. It’s not hard, but it requires attention during Medicare’s Annual Enrollment Period each fall.

The 31-Day Trap: What Catches People Off Guard

Here’s what I see go wrong most often with retiring state employees in the Lowcountry:

Trap 1: Confusing the retirement date with the Medicare date. Your SCRS retirement might be effective July 1, but if your Medicare Part B doesn’t kick in until August 1, your 31-day window starts in August. Plan around the Medicare date.

Trap 2: Assuming you can decide later. Some retirees figure they’ll stay on PEBA for now and evaluate in a year. But by next year, you may have developed a health condition that makes private Medigap underwriting a problem. The safest time to leave PEBA is during the 31-day window when you can still get guaranteed-issue Medigap coverage during your Medigap Open Enrollment Period.

Trap 3: Not knowing the window exists. PEBA sends a letter, but retirement is chaotic. People are cleaning out offices, filing paperwork, adjusting to a new routine. The letter arrives and gets buried under a pile of congratulations cards. By the time they find it, the 31 days are gone.

Trap 4: Getting advice from the wrong people. Your HR office can explain PEBA’s plans, but they can’t compare PEBA to the private Medigap market. Your coworker who retired last year made their own decision based on their own health. Neither of those sources gives you a complete picture.

The Blinco Audit: How I Walk Retirees Through This

This is exactly the kind of decision The Blinco Audit was built for. When a retiring state employee comes to me, we work through four steps:

1. Uncover - I pull your current PEBA coverage details, your SCRS retirement estimate, your Medicare eligibility dates, and your prescription drug list. Everything on the table.
2. Decode - I translate PEBA’s Medicare Supplemental plan into plain English next to the private Medigap options available in your zip code. Same coverage categories, side by side, no insurance jargon.
3. Compare - Real dollar comparisons. Monthly premiums, annual out-of-pocket, drug costs, total five-year and ten-year projections under both scenarios.
4. Protect - We make the decision together, and I handle the paperwork. If you’re opting out, I place the private Medigap and Part D plans before your 31-day window closes. If you’re staying on PEBA, you know exactly why and what it’s costing you.

The key: start this process at least 90 days before your retirement date. That gives us time to get quotes, compare options, and make the decision without the clock running out.

Your Action Plan

If you’re a South Carolina state employee, teacher, county worker, or anyone covered by PEBA who’s within two years of retirement, here’s what to do:

1. Find your Medicare Part B effective date. If you’re already 65 and working, Part B may start the month after you leave your job. If you’re approaching 65 and retiring simultaneously, Part B typically starts the month you turn 65. Social Security can confirm your exact date.
2. Check your PEBA funding status. Are you a fully funded or partially funded retiree? This affects your PEBA premium. Your HR office or PEBA’s retiree resources page can tell you.
3. Call me. Seriously. This is a free consultation. I’ll run The Blinco Audit on both options and give you a clear recommendation based on your health, your budget, and your comfort level. No pressure, no sales pitch - just the numbers and the trade-offs.

Michelle Blinco Smith | (843) 594-1759 | Affordable Health & Dental, Summerville, SC

I don’t stop until you’re covered.

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Written by Michelle Blinco Smith, Licensed Insurance Producer (Health, Life, Accident and Sickness) - South Carolina NPN 20072458 - 6 years experience. This guide reflects PEBA policies and private Medigap rates as of 2026. PEBA plan details sourced from peba.sc.gov. Private Medigap rates are based on published carrier information for South Carolina and vary by age, tobacco use, health status, and zip code. This is educational content, not legal or financial advice. Verify current premiums and deadlines directly with PEBA and your chosen carriers before making enrollment decisions.