T-Mobile US, Inc.TMUS
T-Mobile US, Inc. New Standards Disclosure
Accounting Pronouncements Adopted During the Current Year
Income Tax Disclosures
In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures.” The standard enhances income tax disclosure requirements for all entities by requiring specified categories and greater disaggregation within the rate reconciliation table, disclosure of income taxes paid by jurisdiction, and providing clarification on uncertain tax positions and related financial statement impacts. We adopted the standard for our fiscal year 2025 annual financial statements. The guidance was applied retrospectively, and the required disclosures have been included in the Notes to the Consolidated Financial Statements. See Note 14 – Income Taxes for further information.
Credit Losses: Purchased Loans
In November 2025, the FASB issued ASU 2025-08, “Financial instruments – Credit Losses (Topic 326): Purchased Loans,” which amends the guidance in ASC 326 on the accounting for certain purchased loans. Under the ASU, entities must account for acquired loans, excluding credit card, that meet certain criteria at acquisition (purchased seasoned loans) by recognizing them at their purchase price plus an allowance for expected credit losses. Purchased seasoned loans are defined as either: (1) non-purchased credit deteriorated loans that are obtained in a business combination, or (2) non-purchased credit deteriorated loans that (a) are obtained in an asset acquisition or upon consolidation of a variable interest entity that is not a business and (b)
are acquired more than 90 days after their origination date by a transferee that was not involved in their origination. We adopted the standard for our fiscal year 2025 annual financial statements. This guidance was applied retrospectively, and the adoption of the standard did not have a material impact on our Consolidated Financial Statements.
Accounting Pronouncements Not Yet Adopted
Disaggregation of Income Statement Expenses
In November 2024, the FASB issued ASU 2024-03, “Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses.” The standard requires that public business entities disclose additional information about specific expense categories in the notes to financial statements for interim and annual reporting periods. The standard will become effective for us for our fiscal year 2027 annual financial statements and interim financial statements thereafter and may be applied prospectively to periods after the adoption date or retrospectively for all prior periods presented in the financial statements, with early adoption permitted. We plan to adopt the standard when it becomes effective for us beginning in our fiscal year 2027 annual financial statements, and we are currently evaluating the impact this guidance will have on the disclosures included in the Notes to the Consolidated Financial Statements.
Internal-Use Software Accounting and Disclosures
In September 2025, the FASB issued ASU 2025-06, “Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software.” The amendments remove all references to project stages in ASC 350-40, clarify the threshold entities apply to begin capitalizing costs and address challenges arising from the evolution of software development practices. The new guidance modernizes accounting for software developed using incremental and iterative methods, where the existing model provided limited direction on when capitalization should begin. The ASU also specifies that the disclosures under ASC 360-10, “Property, Plant, and Equipment—Overall,” apply to capitalized software costs accounted for under ASC 350-40, regardless of how those costs are presented in the financial statements. The standard will become effective for our fiscal year 2028 annual financial statements and interim financial statements thereafter and may be applied prospectively to periods after the adoption date, retrospectively for all prior periods presented in the financial statements or using a modified retrospective transition approach with early adoption permitted. We do not expect the adoption to have a material impact on our Consolidated Financial Statements and related disclosures.
Interim Reporting
In December 2025, the FASB issued ASU 2025-11, “Interim Reporting (Topic 270): Narrow-Scope Improvements.” The standard improves the navigability of interim disclosures, clarifies when Topic 270 applies and provides additional interim disclosure guidance, including a principle to disclose material events since the most recent annual reporting period. The amendments do not change the underlying objectives of interim reporting but are designed to enhance clarity in application. The standard is effective for us beginning January 1, 2028, with early adoption permitted, and may be applied prospectively or retrospectively. We evaluated this standard and concluded our current interim reporting disclosures are consistent with this standard. Accordingly, we do not expect the adoption of this standard to have a material impact on our interim reporting disclosures.
Historical Timeline
| Fiscal Year | Filed | |
|---|---|---|
| 2025 | Feb 11, 2026 | Showing above |
| 2024 | Jan 31, 2025 | |
| 2023 | Feb 2, 2024 | |
| 2022 | Feb 14, 2023 | |
| 2021 | Feb 11, 2022 | |
About New Standards Disclosures
New accounting standards disclosures describe recently adopted pronouncements and those not yet effective, along with management's assessment of their expected impact. This section provides an early warning system for upcoming changes to how a company reports its financial results, often years before the new rules take effect.
Key signals: when management describes a not-yet-adopted standard's impact as "material" or "still being evaluated," it signals potential significant changes to reported metrics upon adoption. Watch for standards that affect a company's core operations — for example, revenue recognition changes for software companies or lease accounting changes for retailers with large store footprints. The transition method chosen (full retrospective versus modified retrospective) affects comparability with prior periods. Companies that delay adoption to the latest permitted date may be struggling with implementation complexity. Compare the disclosed impact assessments against peers in the same industry to gauge whether management's expectations are reasonable.