T-Mobile 401(k) match, vesting and fees
What T-Mobile's 401(k) plan says about matching contributions
The Company provides a safe harbor matching contribution equal to 100% of each participant’s contribution up to a maximum of 3% of eligible compensation and 50% of each participant’s contribution on the next 2% of eligible compensation, up to a maximum of 4% or the IRC limitation for a safe harbor matching contribution.
Quoted directly from the filing. Plan terms may have changed; check your current Summary Plan Description.
Plan features
Indented passages are quoted word for word from the audit report; plan terms may have changed since, so check your current Summary Plan Description.
| Employer match | Quoted from the filing above | Audit report, p. 178 ↗ |
| Match vesting | Vesting - Participants are vested immediately in their elective deferral contributions, employer matching contributions, rollovers, and earnings or losses thereon. Participants are vested in the Company's discretionary nonelective contributions and the earnings or losses thereon in accordance with the following table: Years of Service Percentage Vested Less than 1 0% 1 but less than 2 50% 2 or more 100% Participants become fully vested in the Company's discretionary nonelective contributions on reaching normal retirement age while still employed by the employer, death or termination of employment due to total and permanent disability. Participants of certain merged plans with unvested account balances transferred into the Plan in prior years are subject to a vesting schedule based on years of service and are 100% vested after three to five years of credited service. Forfeited Accounts - As of December 31, 2024, the balance of unallocated forfeitures was approximately $115,000 (2023 - approximately $190,000). Forfeitures in the amount of approximately $741,000 were used in accordance with the provisions specified in the Plan document during 2024. | Audit report, p. 179 ↗ |
| Roth contributions | Contributions - The Plan provisions permit pre-tax, Roth, and after-tax contributions by employees pursuant to section 401(k) of the IRC. | Audit report, p. 178 ↗ |
| Loans | Notes Receivable From Participants - A participant may borrow 50% of their vested account balance up to a maximum of $50,000. The minimum loan amount is $1,000. Participants are assessed a fee of $50 for each loan origination. Principal and interest are repayable through payroll deductions over periods ranging up to five years, unless the loan is used to acquire a principal residence, in which case the loan term may exceed five years. Loans are secured by the balance of the participant’s account. The interest rate is determined by the plan administrator at loan inception based on prime plus 2% and is fixed over the life of the note. The interest rates on outstanding loans ranged from 3.25% to 10.50% at December 31, 2024, and mature through January 2046. | Audit report, p. 180 ↗ |
| Recordkeeper | Fidelity Investments Institutional | Schedule C ↗ |
| Independent auditor | Clark Nuber, P.S. (unmodified opinion, limited scope) | Schedule H ↗ |
| Plan type and status | 401(k) · Active | Form 5500 ↗ |
All rows are from the plan year 2024 filing; plan features from its audit report.
How the plan compares
Plan year 2024 medians for 14 defined-contribution plans in information with 50,000 or more participants.
| T-Mobile: employer contribution per participant | $2,135 | |
| Peer median | $3,236 |
| T-Mobile: average balance | $115,458 | |
| Peer median | $164,552 |
| T-Mobile: admin expenses ÷ assets | 0.03% | |
| Peer median | 0.03% |
Admin expenses are the plan's reported administrative expenses divided by its assets; they do not include fund expense ratios.
Plan history
Plan assets went from $8.3B at the end of plan year 2023 to $9.1B at the end of plan year 2024.
| Plan year | Participants | Assets | Employer contributions | Per participant | Admin expense ratio | Match formula | Filing |
|---|---|---|---|---|---|---|---|
| 2024 | 95,644 | $9.1B | $167M | $2,135 | 0.03% | Quoted in the audit report, p. 178 ↗ | Form 5500 ↗ |
| 2023 | 96,694 | $8.3B | $181M | $2,246 | 0.03% | Not published | Form 5500 ↗ |
Other T-Mobile plans (1)
Each plan files its own Form 5500. Figures are from each plan's latest filing.
T-Mobile Puerto Rico 1165(e) Plan
Plan features
Match, vesting and enrollment details have not been published from this plan's audit report yet. The figures below come from the structured filing.
| Recordkeeper | Fidelity Investments Institutional | Schedule C ↗ |
| Independent auditor | Clark Nuber, P.S. (unmodified opinion, limited scope) | Schedule H ↗ |
| Plan type and status | Profit-sharing · Active | Form 5500 ↗ |
Common questions
Does T-Mobile match 401(k) contributions?
The audit report attached to the T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust's plan year 2024 Form 5500, page 178 says: “The Company provides a safe harbor matching contribution equal to 100% of each participant’s contribution up to a maximum of 3% of eligible compensation and 50% of each participant’s contribution on the next 2% of eligible compensation, up to a maximum of 4% or the IRC limitation for a safe harbor matching contribution.” Plan terms may have changed; check your current Summary Plan Description.
When is the T-Mobile 401(k) match vested?
The audit report attached to the plan year 2024 Form 5500, page 179 says: “Vesting - Participants are vested immediately in their elective deferral contributions, employer matching contributions, rollovers, and earnings or losses thereon. Participants are vested in the Company's discretionary nonelective contributions and the earnings or losses thereon in accordance with the following table: Years of Service Percentage Vested Less than 1 0% 1 but less than 2 50% 2 or more 100% Participants become fully vested in the Company's discretionary nonelective contributions on reaching normal retirement age while still employed by the employer, death or termination of employment due to total and permanent disability. Participants of certain merged plans with unvested account balances transferred into the Plan in prior years are subject to a vesting schedule based on years of service and are 100% vested after three to five years of credited service. Forfeited Accounts - As of December 31, 2024, the balance of unallocated forfeitures was approximately $115,000 (2023 - approximately $190,000). Forfeitures in the amount of approximately $741,000 were used in accordance with the provisions specified in the Plan document during 2024.”
Who manages the T-Mobile 401(k)?
The recordkeeper listed on Schedule C of the plan year 2024 filing is Fidelity Investments Institutional. The plan administrator is T-Mobile USA, Inc..
I left T-Mobile. How do I find my old 401(k)?
Your account stays in the plan until you move it. Contact the plan administrator (T-Mobile USA, Inc., (425) 383-4000) or the recordkeeper, Fidelity Investments Institutional. The T-Mobile old 401(k) page lists the contacts from every plan filing. Find an old T-Mobile 401(k)
Data from the public Form 5500 annual reports T-Mobile filed with the U.S. Department of Labor (plan years 2023 and 2024) and, where noted, the attached independent auditor's report. Plan terms may have changed since the filing; check your current Summary Plan Description. PlanFacts is not affiliated with T-Mobile. Not financial advice. Report a correction · Methodology