Key Takeaways

• Postal workers can still use HSAs if enrolled in a qualified high-deductible health plan under PSHB.
• Careful attention to eligibility and compliance rules helps maximize HSA benefits after the PSHB transition.

Navigating health benefits can be challenging, especially during significant transitions like the launch of the Postal Service Health Benefits (PSHB) Program in 2025. Understanding how Health Savings Accounts (HSAs) integrate with these changes helps you use your benefits wisely in 2026 and beyond.

What Is a Health Savings Account?

HSA basics explained

A Health Savings Account (HSA) is a tax-advantaged savings tool designed to help you pay for qualified medical expenses. It is only available to individuals enrolled in a high-deductible health plan (HDHP). If you qualify, you can set aside pre-tax dollars, which lowers your taxable income and helps pay for health care costs such as deductibles, copays, and some prescriptions. Funds in an HSA roll over year to year and remain yours even if you retire or change jobs.

Who qualifies for an HSA

To be eligible for an HSA, you must meet Internal Revenue Service (IRS) rules, including:

• Enrollment in a qualified HDHP
• Not being enrolled in Medicare
• No coverage under other disqualifying health plans (such as certain flexible spending accounts)

Review current rules each year, as eligibility can change based on federal guidance and your plan choices.

How Did the PSHB Transition Affect HSAs?

PSHB program overview

Starting January 1, 2025, the Office of Personnel Management (OPM) introduced the Postal Service Health Benefits (PSHB) Program, which replaced FEHB coverage for career USPS employees and annuitants. The PSHB program aligns many requirements closely with its predecessor but introduces specific changes tied to eligibility and enrollment, especially regarding Medicare integration for retirees.

Changes for postal workers after January 2025

For active postal workers, the main change is that PSHB is now your primary avenue for employer-sponsored health insurance. Some, but not all, PSHB plans are still considered HDHPs eligible for HSA contributions. Retirees aged 65 or older, or those enrolling in Medicare, face special restrictions, as HSA contributions generally must stop upon Medicare enrollment. It’s important to confirm each PSHB plan’s compatibility with HSAs each open season.

Can Postal Workers Still Use an HSA?

Eligibility rules after the PSHB transition

If you wish to contribute to an HSA after January 2025, you must be enrolled in a PSHB plan that qualifies as an HDHP under IRS rules. You also cannot be enrolled in Medicare Part A or B, nor have other coverage that disqualifies you. While these requirements are not unique to the PSHB, the shift has changed which plans are available and their specific features.

Common scenarios for current and retired workers

• Active postal workers under age 65: If you’re covered by a qualifying PSHB HDHP and meet other IRS rules, you can contribute to your HSA as before.
• Workers turning 65: Once you enroll in Medicare (even Part A), you must stop making new HSA contributions, but you may continue to use existing HSA funds for eligible expenses.
• Retired postal workers: If enrolled in Medicare and PSHB, you cannot contribute new money to an HSA but continue to have access to funds already there.

How Do You Contribute to an HSA in 2026?

Contribution limits

The IRS sets maximum HSA contribution limits annually. For 2026, check the published IRS guidance, as these amounts are adjusted each year. Contributions generally cannot be made once you are enrolled in Medicare, and exceeding limits can result in tax penalties. Make sure to prorate contributions if you become ineligible during the year.

Payroll deduction and other funding options

For active postal employees, you can contribute to your HSA through payroll deduction, if your administrator permits, or schedule deposits directly to your HSA from your personal account. Contributions can be made throughout the year, up to the annual IRS limit, as long as you remain eligible. Review your paystub or HR self-service portal to confirm your chosen rates and confirm that deductions are being directed to a qualified HSA.

What Expenses Can HSAs Cover Under PSHB?

Qualified medical expenses list

HSAs may be used for a wide range of IRS-qualified medical expenses, including:

• Doctor visits
• Hospital services
• Prescription medications
• Dental and vision care
• Some over-the-counter products (subject to IRS rules)

Ensure you keep records and receipts for all distributions for tax-time substantiation.

Coordination with Medicare and PSHB plans

After enrolling in Medicare, you cannot make new HSA contributions, but you may use existing funds for Medicare premiums (excluding Medigap), deductibles, and most out-of-pocket qualified expenses. Coordination is key: always check that your withdrawals match the IRS’s most recent list of eligible expenses, and remember that rules can vary slightly depending on the specifics of your PSHB plan.

Are There Special Considerations for Retirees?

Impact of Medicare enrollment

Enrolling in Medicare—either at age 65 or through disability—affects your HSA eligibility. Contributions must stop on the first day of the month you’re enrolled. However, funds already saved in your HSA remain available for qualified expenses throughout retirement. You may also use HSA distributions for non-medical expenses after age 65, but these will be subject to income tax (without the penalty that applies to those under 65).

What to do with your HSA after age 65

You can continue to use your HSA to cover out-of-pocket medical expenses tax-free. After age 65, you are permitted to take distributions for any purpose; non-medical withdrawals will be taxed as ordinary income but no longer incur a penalty. Many retirees find their HSA helps offset costs not reimbursed by other health coverage.

How Can Postal Workers Avoid Common HSA Mistakes?

Avoiding ineligible contributions

Mistakes often occur if someone continues HSA contributions after becoming ineligible (for example, by enrolling in Medicare). Review your eligibility status each year, and promptly update your deductions or bank contributions if you experience a qualifying event—such as retirement or Medicare enrollment.

Staying compliant with OPM and IRS rules

Stay up-to-date using official OPM resources and IRS publications. If you’re uncertain about your status, consult a qualified tax professional. Always keep documentation of your plan details, contribution history, and expenses. It is your responsibility to ensure you remain compliant with HSA rules, as corrections for excess contributions may require prompt attention to avoid tax penalties.