Photo of Muhyung (Aaron) Lee

Muhyung (Aaron) Lee is a partner in the Tax Department. Aaron works predominantly on U.S. federal corporate, partnership and international tax matters that include advising on mergers and acquisitions, fund formation, financial products and financing transactions.

Before joining Proskauer, Aaron was an associate at Davis Polk & Wardwell LLP in New York. Before attending law school he worked in finance at Société Générale and Bank of America Merrill Lynch.

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

I. Introduction

On October 20, 2025, the U.S. Department of the Treasury (“Treasury”) and the Internal Revenue Service (the “IRS”) issued proposed regulations (the “Proposed Regulations”) that would helpfully revoke the current “look-through rule” for domestic C corporation shareholders to determine whether a “real

On September 10, 2025, California’s Franchise Tax Board (“FTB”) adopted final regulations (“Final Regulations”) amending the rules regarding market-based sourcing for sales other than sales of tangible personal property.  This brings to an end the FTB’s long-running process toward formally adopting the amendments first approved in

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 May 20, 2025, California’s Franchise Tax Board (“FTB”) released changes to the proposed regulations (“Draft Regulations”) that would amend the rules regarding market-based sourcing for sales other than sales of tangible personal property.  This is the latest step by the FTB in the long-running process toward formally adopting the amendments first approved in 2016, which we described in a September 2024 blog post when FTB released an updated draft of the amendments. 

On Thursday May 22, the House of Representatives passed the One Big Beautiful Bill Act (H.R. 1, hereafter the “Bill”). The Bill will now be considered by the U.S. Senate.

The following is a summary of some of the key provisions that have been changed from the version

Update (7/11/2025): On July 4, 2025, President Trump signed the “One Big Beautiful Bill” Act (the “OBBBA”).  Consistent with the earlier draft bill released by the Senate, the OBBBA did not include either of the two proposed changes that would have been particularly relevant for the sports industry

On May 18, 2025, the House Budget Committee approved the legislation entitled, “The One, Big, Beautiful Bill” (the “House Bill”). The bill is expected to be revised by the House Rules Committee before being sent to the House floor for a vote.

The House Bill extends

On October 4, 2024, the Internal Revenue Service (the “IRS”) released Private Letter Ruling 202440007, which concluded that the lack of income and assets in the first taxable year of an entity that had elected to be treated as a real estate investment trust (“REIT”) did not cause the entity