3 Key Differences Between TRICARE and FEHB That Every Retired Military Employee Should Know

Missy E
November 14, 2025

Key Takeaways:

TRICARE and FEHB offer different approaches to healthcare coverage for retired military employees, with distinct eligibility rules and cost structures.
Understanding the three key differences in enrollment, provider networks, and cost-sharing requirements can help you choose the best option for your retirement.

Choosing the Right Coverage: TRICARE vs. FEHB

If you’re a retired military employee, you have access to two major healthcare options

—TRICARE and the Federal Employees Health Benefits (FEHB) program. While both provide comprehensive coverage, they operate under different rules, cost structures, and provider networks. Understanding these differences is essential when deciding which plan best meets your needs in retirement.

While TRICARE is designed specifically for military retirees and their families, FEHB serves federal civilian employees, including military retirees who transition into federal jobs. The coverage, provider access, and cost-sharing mechanisms between the two programs differ significantly, and selecting the right one depends on your healthcare needs and financial situation.

Additionally, your healthcare needs can evolve over time, making it crucial to regularly assess your coverage. What works for you immediately after retiring might not be the best fit a decade later. Factors such as changes in provider availability, shifts in cost structures, and the integration of Medicare can all impact your decision.

Let’s break down the three key differences between TRICARE and FEHB so you can make an informed decision about your retirement healthcare coverage in 2025 and beyond.

1. Enrollment and Eligibility: Understanding Your Options

Who Qualifies for TRICARE vs. FEHB?

One of the biggest differences between TRICARE and FEHB is how eligibility works. TRICARE is exclusively for military personnel and their families, while FEHB is available to federal civilian employees, including military retirees who take on federal government roles after leaving active duty.

TRICARE Eligibility: If you retired from the military, you and your eligible dependents can enroll in TRICARE. However, once you turn 65, you must enroll in Medicare Part B to remain eligible for TRICARE for Life, which serves as a secondary payer to Medicare.
FEHB Eligibility: If you transition into a federal civilian job after retiring from the military, you qualify for FEHB just like any other federal employee. Unlike TRICARE, you don’t need Medicare Part B to maintain FEHB in retirement, though it may help reduce out-of-pocket costs if you choose to enroll in both.

Can You Have Both TRICARE and FEHB?

Yes! Some retired military employees who later work for the federal government enroll in both TRICARE and FEHB. This dual coverage can provide more flexibility and reduce out-of-pocket costs. However, paying for both plans may not be necessary for everyone, so carefully reviewing your healthcare needs is crucial.

Additionally, those who qualify for both programs should consider which plan will serve as their primary coverage. If you have both FEHB and TRICARE, TRICARE typically pays first, followed by FEHB. This coordination of benefits can lower your out-of-pocket expenses but requires careful review to ensure it aligns with your expected medical needs.

2. Provider Networks and Access to Care

Where Can You Receive Treatment?

The way TRICARE and FEHB handle provider access is another major difference. TRICARE operates within a structured network tied to military treatment facilities, whereas FEHB offers a much broader selection of private-sector healthcare providers.

TRICARE: The type of TRICARE plan you choose determines your provider network. TRICARE Prime requires referrals and primarily uses military hospitals and clinics, while TRICARE Select offers access to a larger network of civilian providers. However, provider availability can be limited in some areas, particularly for military treatment facilities with long wait times.
FEHB: With FEHB, you can choose from a variety of private health insurance plans that include nationwide and even international provider networks. This gives you greater flexibility to see specialists and access care without military facility restrictions.

How Does Provider Choice Impact Your Care?

If you prefer to stay within the military healthcare system, TRICARE might be a good fit. However, if you want more flexibility in choosing doctors and specialists—especially in areas where military healthcare facilities are limited—FEHB may offer better access to care.

Furthermore, the availability of specialty care can vary widely between TRICARE and FEHB. While TRICARE often provides excellent primary care within military hospitals, accessing specialty services such as cardiology or dermatology may involve long wait times or additional referrals. In contrast, FEHB enrollees typically have more direct access to specialists without the need for military referrals.

3. Cost Differences: Premiums, Copays, and Out-of-Pocket Expenses

How Do the Costs Compare?

The cost structures of TRICARE and FEHB differ significantly. TRICARE generally has lower out-of-pocket costs, but it comes with restrictions on provider access and care locations. FEHB plans, on the other hand, offer more provider flexibility but come with higher premiums and cost-sharing requirements.

TRICARE Costs: Retired military personnel pay annual enrollment fees (for certain TRICARE plans), copays for civilian care, and prescription drug costs. TRICARE for Life beneficiaries must also pay Medicare Part B premiums.
FEHB Costs: FEHB plans vary in cost depending on the plan chosen, with monthly premiums and out-of-pocket expenses such as copays, coinsurance, and deductibles. However, federal retirees receive a government contribution toward their FEHB premiums, which helps offset costs.

Medicare and Your Costs in Retirement

For retirees who turn 65, Medicare becomes a key factor in deciding between TRICARE and FEHB:

With TRICARE: You must enroll in Medicare Part B to continue with TRICARE for Life, which then acts as secondary coverage.
With FEHB: You are not required to enroll in Medicare Part B, but doing so may help lower your out-of-pocket costs by coordinating benefits.

Additionally, it’s important to assess how out-of-pocket limits compare. FEHB plans generally set annual limits on your expenses, while TRICARE may have fewer cost protections in certain cases. Carefully analyzing these details can help prevent unexpected costs in retirement.

Making the Best Choice for Your Retirement Healthcare

Choosing between TRICARE and FEHB comes down to your personal healthcare needs, preferences, and financial situation. Here’s a quick recap of what to consider:

TRICARE is best if you want to stay within the military healthcare system and pay lower out-of-pocket costs. However, access to civilian providers may be limited depending on your plan.
FEHB is ideal if you prefer a broader provider network and more plan options. It does come with higher premiums and cost-sharing, but federal retirees receive a government subsidy to help with expenses.
If eligible, some retirees choose both plans for maximum flexibility and coverage. This can reduce costs but may not be necessary for everyone.

Understanding these key differences ensures that you can make an informed decision that best suits your healthcare needs in 2025 and beyond.

If you need help deciding which option works best for you, get in touch with a licensed agent listed on this website who can provide personalized guidance based on your situation.