T-mobile Usa, Inc. 401(k) Plan: Login, Facts & Contact Information

T-mobile Usa, Inc. 401(k) Plan Facts

Plan name
T-MOBILE USA, INC. 401(K) RETIREMENT SAVINGS PLAN & TRUST
Plan type
401(k) with employer contributions and profit sharing
Plan sponsor
T-MOBILE USA, INC.
Participants
96,694 (69,015 active employees)
Former employees with a balance
25,685
Plan assets
$9,051,824,432 at Dec 31, 2024
Average account balance
$115,458 across 78,399 accounts
Employer contributions
$167,364,416 in plan year 2024 (29% of all contributions)
Recordkeeper
Fidelity Investments Institutional
Plan year
Jan 1, 2024 – Dec 31, 2024
Plan established
Jan 1, 2000
✓ Employer contributions✓ Automatic enrollment✓ Default investment for undecided participants✓ Participants choose their own investments✓ Self-directed brokerage window✓ Profit sharing— Company stock (ESOP)

Source: Form 5500 for plan year 2024 (Jan 1, 2024 – Dec 31, 2024), filed Oct 9, 2025. Public filing with the U.S. Department of Labor.

Money in and out in plan year 2024

  • $577.8 million went into the plan in contributions, $167.4 million of it from the employer (29%).
  • $1.04 billion was paid out to participants.
  • Investment and other income added $1.18 billion.
  • Administrative expenses were $2.18 million, about $28 per account.

How the T-mobile Usa, Inc. 401(k) changed, 2019–2024

Plan yearParticipantsPlan assetsEmployer contributionsBenefits paid
201960,769$3.36 billion$118.5 million$175.5 million
202061,895$7.76 billion$130.2 million$385.6 million
2021103,385$8.96 billion$184.0 million$627.9 million
2022100,294$7.28 billion$190.9 million$723.0 million
202399,687$8.34 billion$181.0 million$958.2 million
202496,694$9.05 billion$167.4 million$1.04 billion

T-mobile Usa, Inc. 401(k) Contact Information

Phone
425-383-4000
Mailing address
12920 SOUTHEAST 38TH STREET, BELLEVUE WA 98006
Plan sponsor
T-MOBILE USA, INC.
Employer identification number (EIN)
91-1983600
Plan number
001

Questions about the T-mobile Usa, Inc. 401(k)

Does T-mobile Usa, Inc contribute to the 401(k)?

Yes. The plan reports an employer contribution arrangement. In plan year 2024 the employer contributed $167.4 million, 29% of all contributions.

Does the T-mobile Usa, Inc 401(k) have automatic enrollment?

Yes. The plan reports automatic enrollment of eligible employees.

How many people are in the T-mobile Usa, Inc 401(k) plan?

96,694 participants at the start of plan year 2024, 69,015 of them active employees, and 25,685 former employees who still had money in the plan.

What is the average 401(k) balance at T-mobile Usa, Inc?

About $115,458 per account: $9.05 billion in plan assets across 78,399 accounts with a balance at the end of plan year 2024.

Who manages the T-mobile Usa, Inc 401(k) accounts?

Fidelity NetBenefits (listed on the filing as FIDELITY INVESTMENTS INSTITUTIONAL) is the plan's recordkeeper, which is where participants log in to see their balance.

I no longer work at T-mobile Usa, Inc. How do I access my 401(k)?

Your account stays with Fidelity NetBenefits after you leave, so you can log in with the same credentials. If your balance was small, the plan may have rolled it into an IRA in your name. If you can't find it, Beagle can locate it for you.

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