401(k) · DOL Form 5500 · 2023

T-Mobile USA, Inc. 401(k) Plan

Data updated 2026-08-25

$8.3B
Total assets Very large vs avg
71,538
Participants Very large workforce
100th
Percentile by assets National rank
$116,567
Avg per participant Below avg balance/head
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Official DOL plan name: T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust · Sponsored by T-Mobile USA, Inc. · Washington · Information & Media

$8.3B in assets, 71,538 participants

T-Mobile USA, Inc.'s T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust reported $8.3B in total assets and 71,538 participants in its 2023 DOL Form 5500 filing, ranking in the 100th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

  • #2,808 in Information & Media (2,818 peers)

Coverage in Washington

T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust covers 71,538 participants in Washington, 48x the typical Washington plan (state average ~1,476 per filing). Assets: $8.3B.

#2,808
in Information & Media (2,818 peers)
+14.5%
assets growth YoY
84×
vs typical plan assets (national mean)

T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust's outsized position by total assets

T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust vs every filed plan by assets

End-of-year total assets · plan year 2023 · DOL Form 5500

$8,338,937,292 Highest reported value at or above every one of 127,068 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023

T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust's mega-plan peer group by participant headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust is a mega filing (71,538 participants), the rightmost band on the breakdown.

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust reported net income rose from -$1.7B in the plan year 2022 filing to $1.1B in the plan year 2023 filing.
  • T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust end-of-year assets rose from $7.3B in the plan year 2022 filing to $8.3B in the plan year 2023 filing.
  • T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust reported participants fell from 75,797 in the plan year 2022 filing to 71,538 in the plan year 2023 filing.

See the national 2022→2023 release diff →

DOL schedule card

Filing strip 911983600 · T-Mobile USA, Inc. PY 2023 · 401(k)

T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust · $8.3B · 71,538 · 100th

  • 5500 $8.3B
  • ASSETS 71,538
  • PCT 100th
  • EIN 401(k)
  • RANK near The Southern Company Employee Savings Plan
  • PHOTO ind #2808

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Information & Media retirement plans → · Plans in Washington →

T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust in the asset neighbourhood

The Kroger Co. 401(k) Retirement Savings Account PlanThe Kroger Co. 401(k) Retire…$8.4BThe Cargill Partnership Plan$8.4BThe Southern Company Employee Savings PlanThe Southern Company Employe…$8.4BT-Mobile USA, Inc. 401(k) Retirement Savings Plan & TrustT-Mobile USA, Inc. 401(k) Re…$8.3BHewlett Packard Enterprise 401(k)PlanHewlett Packard Enterprise 4…$8.2B
End-of-year total assets ($B) among T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Washington filing particulars

Total Assets (Beginning of Year)$7.3B
Net Assets (End of Year)$8.3B
Net Income$1.1B
Employer EIN911983600
Plan Effective Date2000-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (T-Mobile USA, Inc.)

Sponsor-wide plan assets over time

All T-Mobile USA, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$9.1B 24.33771146884763% vs 2022
2024 filing year
$7B$8B$9B$10B 202220232024 $7.28B $9.05B ▲ +24.3%
Year Plans Participants Total Assets
2022 1 75,797 $7.3B
2023 1 71,538 $8.3B
2024 1 66,624 $9.1B

Nearby 401(k) Plans in Washington

Peer 401(k) plans, same state, same plan type, ranked by total assets.

T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust vs. nearby 401(k) plans in Washington, assets vs. participants Scatter plot of 6 data points. 050000100000150000200000 020406080 Total assets ($B) Participants T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust, Total assets ($B): 8.338937292 · Participants: 71538T-Mobile USA, Inc. 401(k) Retirement Savings Plan & TrustThe Boeing Company 401(k) Retirement Plan, Total assets ($B): 72.246135158 · Participants: 128910The Boeing Company 401(k) Retirement PlanMicrosoft Corporation Savings Plus 401(k) Plan, Total assets ($B): 53.225853429 · Participants: 123296Microsoft Corporation Savings Plus 401(k) PlanCostco 401(k) Retirement Plan, Total assets ($B): 33.384845813 · Participants: 192744Costco 401(k) Retirement Plan401(k) Savings Plan, Total assets ($B): 8.118808679 · Participants: 87590401(k) Savings PlanProvidence Health & Services 403(b) Value Plan, Total assets ($B): 6.222775252 · Participants: 51684Providence Health & Services 403(b) Value Plan
T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust vs. nearby 401(k) plans in Washington, assets vs. participants
Compare T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust side-by-side with 3 peers →

Scale composition for T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust

T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust reports $8.3B in end-of-year assets across 71,538 participants (0.068% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.076% of 93,925,755 covered participants) - about $116,567 per participant (84% of the national average assets-per-participant) . Net income for plan year 2023 was $1.1B.

This plan identity (EIN 911983600, plan #001) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $7.3B to $9.1B (+24.3%) while covered participants moved from 75,797 to 66,624 . Single-year sparse filers cannot show that trail.

Plan year Participants EOY assets Filing
2022 75,797 $7.3B Open filing
2023 71,538 $8.3B This page
2024 · index core 66,624 $9.1B Open filing

The same sponsor also keeps 1 other index-core plan on PlainRetire:

T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust's out-of-state 401(k) peers by assets and headcount

Outside Washington, the nearest 401(k) by assets is The Southern Company Employee Savings Plan in GA ($8.4B); by covered participants it is Principal Ease 401(k) Plan in IA (72,266 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($8.3B here).

Similar participant headcount

Nearest other-state filings by covered participants (71,538 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust assets move in 2023? ▼
T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust grew at a solid clip - up 14.5% during 2023, from $7.3B to $8.3B. Reported net income was $1.1B.
How have T-Mobile USA, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), T-Mobile USA, Inc.'s sponsor-wide assets grew 24.3%, from $7.3B to $9.1B.
Where does T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust rank by assets among Form 5500 filers? ▼
T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust ranks in the 100th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (among the largest 1% of all filed plans).
Which 401(k) plans are similar in size to T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust? ▼
Among 401(k) plans in other states, the closest by assets is The Southern Company Employee Savings Plan in GA ($8.4B, 27,549 participants).
Which 401(k) plans cover a similar participant headcount to T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust? ▼
Among 401(k) plans in other states, the closest by covered participants is Principal Ease 401(k) Plan in IA (72,266 participants, $384M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 911983600.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.