On August 12, 2026, in K Alain, L.L.L.P. v. Commissioner,[1] the U.S. Court of Appeals for the Fifth Circuit withdrew its taxpayer-friendly January 16, 2026 opinion in Sirius Solutions, L.L.L.P. v. Commissioner,[2] and replaced it with a decision that is ambiguous in its application but appears…

The UK government has published draft legislation for a new Securities Transfer Tax (STT), which is expected to replace the existing stamp duty and stamp duty reserve tax (SDRT) regimes for transfers of securities.

The proposal is intended to modernise and simplify the UK’s stamp taxes on shares regime by…

The Supreme Court has handed down its judgment in HMRC v BlueCrest Capital Management (UK) LLP, dismissing BlueCrest’s appeal and providing important clarification on the application of the salaried members rules to investment management LLPs.

The decision is particularly significant for asset managers, hedge fund managers and other investment…

On March 19, 2026, in Jones Bluff, LLC v. Commissioner, 166 T.C. No. 6 (2026), the Tax Court held that a partnership could not assert due process claims to invalidate an IRS adjustment on behalf of its partners under the Bipartisan Budget Act of 2015 (the “BBA”) regime. The…

On January 16, 2026, in Sirius Solutions, L.L.L.P. v. Commissioner,[1] No. 24-60240 (5th Cir. Jan. 16, 2026), the U.S. Court of Appeals for the Fifth Circuit reversed the Tax Court and held that, for self-employment tax purposes, a “limited partner” means “a partner in a limited partnership that…

I.          Introduction

On December 15, 2025, the U.S. Department of the Treasury (“Treasury”) and the Internal Revenue Service (the “IRS”) published final regulations (the “Final Regulations”) and proposed regulations (the “Proposed Regulations”) under section 892.[1] The Final Regulations finalize, with modifications…

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…

On April 17, 2025, the U.S. Internal Revenue Service (the “IRS”) issued Notice 2025-23 (the “Notice”), announcing its intention to withdraw the recently released final regulations final regulationsthat classify certain partnership related party basis shifting transactions and substantially similar transactions as “transactions of interest”. The Notice provides taxpayers and their…

Introduction

On January 10, 2025, the Treasury Department and the U.S. Internal Revenue Service (the “IRS”) released final regulations (the “regulations”) classifying certain partnership related party basis adjustment transactions and substantially similar transactions as transactions of interest, a type of reportable transaction, which requires disclosure for the taxpayer and its…

On December 23, 2024, in Denham Capital Management LP v. Commissioner (T.C. Memo. 2024-114), the Tax Court reaffirmed its earlier ruling in Soroban Capital Partners LP v. Commissioner (161 T.C. No. 12.) that active limited partners of a state law limited partnership are not entitled to the “limited partner exception”…