Employer TRICARE: Supplements & Private Insurance Rules (2026)

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## Quick answer "Employer TRICARE" usually refers to the **TRICARE Supplement**, a secondary insurance plan offered by some employers to help military beneficiaries cover out-of-pocket costs like copays and deductibles. However, federal law prohibits employers from offering financial incentives (like cash) to convince you to drop TRICARE and use their private health insurance instead.

Details

### The TRICARE Supplement Plan Many private companies and some public sector employers offer a "TRICARE Supplement" as part of their benefits package. This is not a replacement for TRICARE; rather, it is a secondary payer. * **How it works:** TRICARE pays first as your primary insurance. The supplement then pays your remaining cost-shares, copayments, and potentially the TRICARE deductible. * **Cost:** You typically pay a monthly premium to your employer or a third-party administrator for this coverage. * **2026 Context:** For retirees under age 65 who face higher TRICARE Select enrollment fees or Select/Prime copays, these supplements can help cap annual out-of-pocket spending.

### The Employer "Incentive" Prohibition Under 10 U.S.C. § 1097c, it is illegal for an employer with 20 or more employees to offer any financial or other incentive for a TRICARE-eligible employee to NOT enroll in the employer’s group health plan. This means: * Your boss cannot pay you $500 a month to stay on TRICARE rather than joining the company plan. * Employers cannot offer "TRICARE-only" bonuses. * They *can* offer a TRICARE Supplement plan as part of a uniform cafeteria benefit plan available to all employees.

### TRICARE vs. Employer Sponsored Insurance (ESI) If you are employed and have access to both TRICARE (Prime or Select) and a private Employer Sponsored Insurance (ESI) plan, you can have both. 1. **ESI is Primary:** By law, your employer's health plan must pay first. 2. **TRICARE is Secondary:** TRICARE pays the remaining balance for TRICARE-covered services. 3. **Pharmacy:** Express Scripts remains the pharmacy manager for TRICARE, but if you have employer drug coverage, that must be used before TRICARE's benefit kicks in.

### The Exception: TRICARE Reserve Select (TRS) If you are a member of the Selected Reserve, you generally cannot use TRICARE Reserve Select if you are eligible for the **Federal Employees Health Benefits (FEHB)** program through a civilian government job. However, as of 2026, legislation is moving toward expanding TRS eligibility for federal employees (scheduled for full implementation by 2030).

## Who this affects * **Retirees and their families:** Often the primary users of employer-sponsored TRICARE Supplements. * **National Guard and Reserve members:** Specifically regarding their eligibility for TRS relative to federal employment. * **Military Spouses:** Many work for employers offering private insurance while they are also covered by an active-duty spouse's TRICARE. * **Survivors:** Eligible for TRICARE and often employed in the civilian sector.

## Sources * **TRICARE.mil:** [Using Other Health Insurance](https://www.tricare.mil/ohi) * **TRICARE.mil:** [TRICARE Supplement Insurance Plan](https://www.tricare.mil/Plans/OHI/Supplements) * **Defense Health Agency (DHA):** [Prohibition on Incentives](https://health.mil) * **TriWest Healthcare Alliance:** [West Region Beneficiary Portal](https://www.triwest.com)