How to Add a Dependent to TRICARE: 2026 Guide | TRICARE.com

*Note: TRICARE.com is an independent reference site and is not the official TRICARE program. For the most current official policies, please visit TRICARE.mil.*

## Quick answer To add a dependent to TRICARE, you must first register them in the **Defense Enrollment Eligibility Reporting System (DEERS)** at a RAPIDS office. Once they are showing as eligible in DEERS, you then have 90 days (or 120 days if overseas) to enroll them in a specific TRICARE plan via the regional contractor.

Details

Adding a dependent is considered a **Qualifying Life Event (QLE)**. Because TRICARE is tied directly to military personnel records, you cannot simply call TRICARE to add a person; the process must start with the Department of Defense (DoD).

### Step 1: Register in DEERS Before TRICARE can provide coverage, the sponsor must register the dependent in DEERS. * **Required Documents:** You will typically need a birth certificate, marriage certificate, or adoption papers. * **Where to go:** Visit a Real-Time Automated Personnel Identification System (RAPIDS) office. You can find locations and schedule appointments via the [ID Card Office Online](https://idco.dmdc.osd.mil/idco/). * **Timeline:** Do this as soon as possible after the birth, marriage, or adoption.

### Step 2: Enroll in a Plan Once the dependent is "TRICARE-eligible" in DEERS, you must proactively choose a plan. If you are Active Duty, your dependents are often eligible for TRICARE Prime (no enrollment fees) or TRICARE Select. * **The 90-Day Window:** For 2026, you generally have **90 days** from the date of the QLE (e.g., the date of marriage or birth) to enroll the dependent in a plan. If you miss this window, you may have to wait until the next Open Season, and the dependent may only be covered for care in a military hospital on a space-available basis. * **Overseas Timeline:** Beneficiaries living OCONUS have **120 days** to complete enrollment.

### Step 3: Regional Registration Contact your regional contractor to finalize the enrollment: * **TRICARE East (Humana Military):** Focuses on the eastern U.S. * **TRICARE West (TriWest Healthcare Alliance):** Covers the western U.S. (Since Jan 1, 2025).

### Costs and Plan Types (2026 Rates) * **Active Duty Family Members:** No enrollment fees for TRICARE Prime. If using TRICARE Select, there are no annual enrollment fees for Group A, but there are deductible and cost-share requirements. * **Retirees:** Adding a dependent may change your "Individual" enrollment fee to a "Family" enrollment fee. For 2026, these rates vary based on whether you are in Group A or Group B—check the TRICARE.mil cost tool for exact figures. * **TRICARE Reserve Select (TRS):** If you are a Guardsman or Reservist, adding a dependent will move you from the "Member-Only" monthly premium to the "Member and Family" premium (varies by plan year — check TRICARE.mil for current rates).

### Edge Cases * **Newborns:** Newborns are covered as "Prime" for the first 60 days to ensure immediate medical care, but they will be dropped if NOT registered in DEERS and enrolled in a plan by the 90-day mark. * **Stepchildren:** You need a marriage certificate and the child's birth certificate to prove the relationship. * **Disabled Adult Children:** Requires a "secondary dependency" determination through your specific military branch's finance or personnel office before DEERS will list them as a dependent.

## Who this affects * **Active Duty Service Members** (adding spouses or children). * **Retirees** (adding a new spouse or child). * **National Guard and Reserve** (TRS and TRR members). * **Surviving Spouses** (adding a child).

## Sources * **TRICARE.mil:** [Life Events - Getting Married or Having a Baby](https://www.tricare.mil/LifeEvents) * **Defense Manpower Data Center (DMDC):** [DEERS Information](https://idco.dmdc.osd.mil/idco/) * **TriWest Healthcare Alliance:** [West Region Support](https://www.triwest.com) * **Humana Military:** [East Region Support](https://www.humanamilitary.com)