Many of our clients and readers will be familiar with the “loan to participator” rules. These rules apply to loans made by close companies, which in general terms are companies which are controlled by five or fewer participators (or by any number of participators who are also shareholders), to their
tax policy
When a Misdirected Partnership Notice isn’t Fatal under the BBA: Mammoth Cave Property
Although many of the procedural rules for auditing partnerships at the federal level have changed under the Bipartisan Budget Act of 2015 (the “BBA”), some principles—like the effect of actual notice—remain the same. Under the BBA, the IRS proposes partnership-level adjustments in a Notice of Proposed Partnership Adjustment (“NOPPA”) and later finalizes them in a Notice of Final Partnership Adjustment (“FPA”). If the IRS issues the FPA after the statute of limitations expires, the partnership can seek to invalidate it as untimely.
A reviewed Tax Court opinion filed March 9, 2026—Mammoth Cave Property, LLC v. Commissioner, No. 5401-24, 166 T.C. No. 4—shows the limits of “defective notice” arguments when the partnership actually received the NOPPA and participated in the process.
President Trump Signs One Big Beautiful Bill Act into Law
I. Introduction
On July 4, 2025, President Trump signed the One Big Beautiful Bill Act (the “Act”) into law.[1] The Act is similar to the Senate Finance Committee’s draft legislative text (the “SFC Bill”) (released on June 16, 2025), with several modifications and omissions. The Act’s key differences from…
Tax Court Breaks New Ground on the Deductibility of Termination Fees with AbbVie Ruling
On June 17, 2025, the Tax Court opinion in AbbVie Inc. and Subsidiaries v. Commissioner of Internal Revenue was issued,[1] holding that the approximately $1.6 billion termination fee AbbVie (a Delaware corporation) paid to its abandoned merger partner Shire plc (an Irish company) was properly an ordinary deductible business…
The Tax Court in Soroban Holds that Limited Partners Were Too Active To Be Treated As “Limited Partners” and are Subject to Self-Employment Tax
On May 28, 2025, in Soroban Capital Partners LP v. Commissioner (T.C. Memo 2025-52) (“Soroban II”), the Tax Court held the active role of limited partners in a fund manager caused them to fail to qualify as “limited partners” for purposes of section 1402(a)(13) and, therefore, the limited…
UK Government Carried Interest Tax Reforms Consultation Process: No New Conditions, Territorial Limits Clarified
By Stephen Pevsner, Catherine Sear & David M. Ward on
June 2025 – The UK Government has published its response to the consultation on its proposal to change the tax treatment of carried interest, confirming the expected final shape of the new regime which will take effect from April 2026.
The reforms, first announced in October 2024, mark a significant…
The One Big Beautiful Bill: SALT Deduction Workarounds Under Fire
On May 12, 2025, House Republicans unveiled a comprehensive 389-page package of tax provisions, setting the stage for a significant tax bill to be debated in the coming weeks. Dubbed the “One Big Beautiful Bill,” this proposal aims to extend and modify many key provisions of the Tax Cuts and…
Taxing carried interest in the UK: the new regime announced in the Labour government’s Autumn Budget 2024
By Catherine Sear & Frazer Money on
On Wednesday 30 October 2024, the UK government announced changes to the UK taxation of carried interest as part of the 2024 Autumn Budget. Changes were expected following statements made by the Labour Party in the run up to their July 2024 general election win, including in their manifesto, and…
UK government consults on taxation of carried interest
By Catherine Sear & Emma C. McDonnell on
The newly elected UK Labour government published its call for evidence (see link here) on the taxation of carried interest on Monday 29 July 2024. This consultation by HM Treasury, cautiously anticipated following statements made during Labour’s election campaign, will remain open until 30 August 2024 during which time…
Treasury and IRS Announce New Attack on Partnership Basis-Shifting Structures and Establishment of “Passthrough Working Group” to Develop Further Partnership Guidance.
On June 17, 2024, the IRS announced the formation of a dedicated group in the Office of Chief Counsel specifically focused on developing guidance on partnerships, which is expected to work with a new “passthrough working group” being established in the Large Business and International Division of the IRS. At the same time, Treasury and the IRS launched an attack on a specific partnership strategy involving so-called “basis bump” or “basis shifting” transactions involving related parties through a combination of guidance challenging the substance of such arrangements and declaring such arrangements to be “transactions of interest” that are subject to the strict disclosure requirements of the “reportable transaction” rules.1