LLNS 401(k) Plan

LLNS offers employees the opportunity to enroll in a tax-deferred 401(k) plan to supplement the lifetime annuity benefit. [The Tax-Deferred 401(k) Plan is described under Section 401(k) of the Internal Revenue Code.] A future benefit from this plan is based on participants' voluntary contributions plus earnings. An employer contribution is added for eligible TCP2 participants. Vesting is immediate for all contributions. Fidelity Investments is the designated administrator and record keeper of the 401(k) plan, and provides all account services. You may consider consulting a tax advisor or financial planner before enrolling.

401(K) Retirement Plan (TCP2)

• LLNS offers eligible employees in TCP2 the opportunity to enroll in a tax-deferred 401(k) Retirement Plan, which includes a Company Match and Service Based Contribution, to help provide financial stability in retirement. [The Tax-Deferred 401(k) Plan is described under Section 401(k) of the Internal Revenue Code.] A future benefit from this plan is based on participants' voluntary contributions plus employer contributions plus earnings; vesting is immediate.
• Summary Plan Description
• Summary Annual Report
• IRS Form 5500 401(k) Retirement Plan

401(k) Savings Plan (TCP1)

• LLNS offers eligible employees in TCP1 the opportunity to enroll in a tax-deferred 401(k) Retirement Plan to help provide financial stability in retirement. A future benefit from this plan is based on participants' voluntary contributions plus earnings; vesting is immediate.
• Summary Plan Description
• Summary Annual Report
• IRS Form 5500 401(k) Savings Plan

IRS Limits for 2026

There are changes in the IRS limits for qualified retirement plans (401(k) and pension) for 2026.

401(k) Elective Deferral

The maximum employee contribution amount for 2026 is $24,500 (combined pre-tax and Roth), an increase of $1,000 from 2025.  Employees that are age 50 and older can contribute an extra amount, by making a separate catch-up contribution election.

New Catch-up Rule for 2026

According to the Secure Act 2.0 Section 603, employees whose 2025 FICA earnings with LLNL are greater than $150,000 are classified as High Earners (HE). High Earners will only be able to make Roth catch-up contributions; pre-tax catch-up contributions will not be available.  An email was sent to all employees eligible for the catch-up in 2026 with detailed information.

Employer/Employee Contribution Limit

The maximum contribution in 2026, including all employee 401(k) contributions, employee pension contributions, employer 401(k) matching, and 401(k) service-based contributions (excluding catch-up contributions) is $72,000, an increase of $2,000 from 2025.

Compensation Limit

The maximum amount of employee compensation that can be considered in calculating contributions to qualified retirement plans for 2026 is $360,000, an increase of $10,000 from 2025. 

To make changes, contact Fidelity either by calling 1-800-835-5095 or online at Fidelity Netbenefits