The PSHB Medicare Part B Rule That Can End Your Health Coverage

Last Updated: June 10, 2026 Reading Time: 11 min

Here's a conversation happening in postal break rooms right now: a carrier who retired in 2024 tells a coworker that he never signed up for Medicare Part B and his health coverage is fine. The coworker, planning to retire this year, figures the same applies to her. It doesn't. The PSHB Medicare Part B requirement draws a hard line at January 1, 2025. Retire after it without enrolling in Part B, and you don't pay a penalty or a surcharge. You lose your health insurance. And because postal workers lost FEHB eligibility for good at the end of 2024, there's nothing to fall back on.

Key Takeaways

• Retire from USPS after January 1, 2025 and you must enroll in Medicare Part B when you become eligible, or your PSHB coverage ends.
• Six groups are exempt, including pre-2025 retirees and anyone who was 64+ on January 1, 2025. The full table is below.
• You get exactly one cure window. Miss your Part B enrollment and federal rules give you a single chance to fix it at the next enrollment period. After that, disenrollment is permanent.
• There is no path back. Once disenrolled, PSHB cannot be reinstated, and postal workers can never return to FEHB.
• Part B costs $2,434.80 per person in 2026 at the standard rate. Most PSHB plans reimburse $900 to $1,200 of it.
• Higher earners get hit twice: IRMAA surcharges apply to Part B and to the drug coverage built into PSHB, per person.

Who the Rule Applies To

The trigger has two parts, and both must be true:

1. You retire from the Postal Service on or after January 1, 2025, and
2. You are (or become) eligible for Medicare, typically at age 65.

If both apply, enrolling in Part B and keeping it is a condition of staying in the Postal Service Health Benefits program. The requirement also covers your Medicare-eligible family members on the plan. A spouse who turns 65 and skips Part B can be dropped from your enrollment even if you did everything right.

While you're still working, none of this applies. An active USPS employee at 67 can stay in PSHB without Part B. The clock starts at retirement, when you get an 8-month Special Enrollment Period to sign up penalty-free.

The Six Exemptions, in One Table

OPM's rules carve out six groups. No one has published them as a single list, which is part of why the break-room misinformation spreads.

Exemption	Who qualifies	Family members exempt too?
Pre-2025 retiree (grandfathered)	Retired on or before January 1, 2025 and not already enrolled in Part B	Yes
Age-64 transition	Active employees who were 64 or older on January 1, 2025, whenever they retire	Yes
VA health care eligible	Annuitants eligible for VA care under 38 U.S.C. chapter 17	Yes, even if the family member isn't VA-eligible
Indian Health Service eligible	Annuitants eligible for IHS coverage	Yes, same rule
Living abroad	Annuitants and family members outside the U.S. and territories, with documented residency	Yes, per documentation
Still working	Active USPS employees of any age	N/A until retirement

Source: 5 CFR Part 890 Subpart P; OPM PSHB annuitant guidance; NARFE PSHB FAQs.

Two details worth underlining. The VA and IHS exemptions follow the annuitant: if you qualify, your covered family members are exempt even if they could get Medicare on their own. And the living-abroad exemption requires proof of residency, not just an address change.

Miss the Deadline? You Get One Cure, Ever

The most underreported part of this rule is buried in 5 CFR 890.1608(b), and it cuts both ways.

The good news: failing to enroll in Part B does not strip your coverage on day one. The regulation gives you one opportunity to stay in PSHB if you enroll during your next available Medicare enrollment period. For most people that's the General Enrollment Period, January 1 through March 31 each year.

The bad news comes in three parts:

• The cure can be used once. It is a single grace, not a standing option.
• The late penalty still applies. Medicare charges 10% of the standard premium for each full 12-month period you were eligible but not enrolled, and that surcharge is permanent.
• After the cure, the door closes. Fail to enroll at that next period and you are disenrolled from PSHB. The regulation is explicit: that disenrollment cannot be reinstated.

Walk through the scenario. A postal worker retires at 65 in March 2026 and skips Part B, believing the coworker story. Coverage continues for now. OPM's one-time cure gives her until the January-to-March 2027 General Enrollment Period to enroll, with a lifetime 10% penalty added. If she misses that window too, her PSHB coverage terminates permanently. Her remaining options: Medicare alone, or shopping the ACA Marketplace at 66.

What Part B Actually Costs in 2026

The standard 2026 Part B premium is $202.90 per month, or $2,434.80 per year, per person. A couple where both spouses are Medicare-eligible pays $4,869.60 at the standard rate.

Your income can change that math fast. IRMAA surcharges are based on your tax return from two years prior:

2024 income (single filer)	Monthly Part B	Annual per person	Annual per couple
Up to $109,000	$202.90	$2,434.80	$4,869.60
$109,001 to $137,000	$284.10	$3,409.20	$6,818.40
$137,001 to $171,000	$405.80	$4,869.60	$9,739.20
$171,001 to $205,000	$527.50	$6,330.00	$12,660.00
$205,001 to $499,999	$649.20	$7,790.40	$15,580.80
$500,000 and up	$689.90	$8,278.80	$16,557.60

Source: CMS 2026 Medicare premium announcement. Joint-filer thresholds are double the single thresholds through the fourth tier.

Note the two-year lookback. Your 2026 premium is set by your 2024 income. Postal workers who had a big final working year in 2024 (overtime, a terminal annual leave payout) can land in an IRMAA tier during their first retirement year even though their income has dropped. If that's you, Form SSA-44 lets you appeal IRMAA based on a life-changing event, and retirement counts.

The Double IRMAA Most Retirees Don't See Coming

PSHB plans deliver prescription drug coverage automatically through a Medicare Part D arrangement called an EGWP. You don't enroll in it; it's built in. But IRMAA applies to Part D too.

So a higher-earning postal retiree pays two income surcharges, per person. At the first IRMAA tier, that's $284.10 for Part B plus $14.50 for Part D, about $3,583 a year. At the top tier it's $689.90 plus $91.00 monthly, roughly $9,371 a year. A couple both at the top tier would pay over $18,700 a year in Medicare premiums before their PSHB plan premium.

The middle Part D tiers scale between those confirmed endpoints. Check the CMS 2026 fact sheet or your Social Security IRMAA notice for your exact tier amount.

The Reimbursement Offset: What Your Plan Gives Back

Here's the part that softens the math. Most major PSHB plans reimburse a chunk of your Part B premium, per Medicare-eligible person:

PSHB plan	2026 Part B reimbursement	Net standard-tier cost per person
APWU High Option	$1,200/year	$1,234.80
GEHA High Option	$1,200/year	$1,234.80
NALC High Option	$900/year	$1,534.80
GEHA Standard	$900/year	$1,534.80
MHBP Standard	$900/year	$1,534.80
BCBS FEP Basic	$800/year (confirm in your 2026 brochure)	$1,634.80

A couple on APWU High Option gets $2,400 a year back. Medicare-integrated PSHB plans also typically reduce deductibles and out-of-pocket costs once Part B is primary, so the net cost of complying is smaller than the sticker price, and what you're buying is the right to keep coverage at all.

Compare plans with our FEHB & PSHB Premium Calculator before open season; the reimbursement difference alone can swing your choice.

Five Mistakes Postal Retirees Are Making

Copying a pre-2025 coworker. The grandfathering line is January 1, 2025. Someone who retired before it plays by different rules than someone retiring after. This is the single most common error.

Assuming there's a pay-to-skip option. There is no surcharge that lets you keep PSHB without Part B. It's an enrollment condition, not a fee.

Assuming FEHB is the backup. It isn't. Postal eligibility for FEHB ended permanently on December 31, 2024.

Treating the cure window as reusable. It works once per person, ever.

Forgetting the family rule. Every Medicare-eligible person on your enrollment must enroll, not just you.

Your Pre-Retirement Checklist

1. Find your group. Check the exemption table above. If you were 64+ on January 1, 2025, or you'll claim a VA, IHS, or overseas exemption, document it.
2. Calendar your Initial Enrollment Period. It runs from 3 months before your 65th birthday month to 3 months after. If you retire after 65, your 8-month Special Enrollment Period starts at retirement.
3. Estimate your IRMAA tier from your second-to-last working year. That's the income Medicare will look at. If a leave payout spikes it, plan to file Form SSA-44 after you retire.
4. Pick a plan with a strong Part B reimbursement during open season (November to December).
5. Time your retirement date with the full picture. Our FERS Retirement Calculator models your annuity by retirement date, so you can weigh the pension math alongside the Medicare deadline.

Frequently Asked Questions

If I retire from USPS after January 1, 2025, do I have to enroll in Medicare Part B to keep my health insurance?

Yes, unless you qualify for an exemption. If you were under 64 on January 1, 2025 and retire after that date, you must enroll in Part B when you become Medicare-eligible to keep PSHB coverage. You get one cure window if you miss enrollment. Miss that too, and your PSHB coverage ends permanently.

Who is exempt from the PSHB Medicare Part B requirement?

Six groups: annuitants who retired on or before January 1, 2025 (and weren't already on Part B); active employees who were 64 or older on January 1, 2025; retirees eligible for VA health care; retirees eligible for Indian Health Service; retirees living outside the U.S. with documented residency; and active employees of any age while still working.

What happens if I don't enroll in Part B as a PSHB annuitant?

You aren't disenrolled immediately. Under 5 CFR 890.1608(b), you get one opportunity to keep PSHB by enrolling at your next available Medicare enrollment period, usually January 1 to March 31. That cure can be used once. Miss it and you're disenrolled permanently, with no reinstatement.

Can I go back to FEHB if I lose PSHB?

No. USPS employees and annuitants permanently lost FEHB eligibility on December 31, 2024. If you lose PSHB, your remaining options are Medicare alone, an ACA Marketplace plan, or other private coverage.

How much does Part B cost a USPS retiree in 2026?

The standard premium is $202.90 a month, $2,434.80 a year per person, with IRMAA surcharges up to $689.90 a month at the top income tier. APWU High and GEHA High reimburse $1,200 a year per Medicare-eligible person; NALC High, GEHA Standard, and MHBP Standard reimburse $900.

Does my Medicare-eligible spouse also have to enroll?

Yes. The requirement applies to every Medicare-eligible person on your PSHB enrollment. A spouse who skips Part B can be removed from the plan, though the one-time cure window applies to family members as well.

I'm 65 and still working at USPS. Do I need Part B now?

No. The mandate applies at retirement, not while you're actively employed. When you retire, you'll have an 8-month Special Enrollment Period to enroll penalty-free, and that's when the PSHB requirement kicks in.

Related Resources

• PSHB Explained: The 2026 Guide for Postal Workers: Plan options, premiums, and how PSHB differs from FEHB
• FEHB + Medicare Part B Guide: The voluntary version of this decision for non-postal feds
• USPS Financial Crisis Guide: The bigger picture behind postal benefit changes
• FEHB & PSHB Premium Calculator: Compare plans and Part B reimbursements
• FERS Retirement Calculator: Model your annuity by retirement date

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This article is general information, not benefits or legal advice. Verify your situation with USPS, OPM, and Medicare before making enrollment decisions. Sources: OPM PSHB annuitant guidance, 5 CFR 890.1608, Federal Register 2024-09565, CMS 2026 Medicare premiums, NARFE PSHB FAQs, SSA POMS HI 00805.346. Premium, IRMAA, and reimbursement figures are 2026 plan-year amounts and change annually.