Billy Abbott


Thank you for your interest. Before you communicate with one of our attorneys, please note: Any comments our attorneys share with you are general information and not legal advice. No attorney-client relationship will exist between you or your business and O’Melveny or any of its attorneys unless conflicts have been cleared, our management has given its approval, and an engagement letter has been signed. Meanwhile, you agree: we have no duty to advise you or provide you with legal assistance; you will not divulge any confidences or send any confidential or sensitive information to our attorneys (we are not in a position to keep it confidential and might be required to convey it to our clients); and, you may not use this contact to attempt to disqualify O’Melveny from representing other clients adverse to you or your business. By clicking "accept" you acknowledge receipt and agree to all of the terms of this paragraph and our Disclaimer.


Billy Abbott advises clients on tax matters in the context of private and public mergers and acquisitions, the formation of, and investments in, private equity funds, partnerships and limited liability companies (LLCs), debt and equity securities issuances, and large-scale syndicated credit facilities.

Billy understands that every business’s tax position is different and works to ensure that his clients achieve the best result possible in any transaction. He represents a wide range of enterprises, including start-ups, large multinational corporations, financial institutions, private equity, real estate, and other investment funds, and traditional and alternative energy companies.


Honors & Awards

  • Recommended by The Legal 500 US in Tax


Bar Admissions

  • California
  • New York


  • Stanford University, J.D.
  • College of William and Mary, B.A., Government and Mathematics

Professional Activities

Speaking Engagements

  • "Decentralized Automated Organizations (DAOs): Practical Applications and Legal Framework," Practising Law Institute (November 16, 2022)


  • "Decentralized Autonomous Organizations (DAOs): Overview," Thomson Reuters Practical Law (November 29, 2022)


  • Honorable Mary Ann Cohen, US Tax Court
  • Represented major technology companies in the acquisition of domestic and foreign target companies 
  • Represented issuers and underwriters in multibillion-dollar issuances of publicly traded securities 
  • Represented significant investors in private equity funds including US taxable investors, US tax-exempt entities and foreign investors (including foreign governments) 
  • Advised on US tax matters with respect to the formation of both domestic US and non-US private equity funds 
  • Advised on Qualified Opportunity Zone matters, including structuring those Qualified Opportunity Funds and investment in them 
  • Represented a leading US company in tax-related litigation before the European Commission

Alerts and Publications

2022 Momentum Year in Review

January 25, 2023

New Guidance on FIRPTA’s Application to REITs, RICs, Foreign Governments, and Foreign Pension Funds

December 29, 2022

FTX Bankruptcy: Tax Implications of Vanishing Customer Deposits

December 9, 2022

The Taxonomy of NFTs

August 31, 2022

Inflation Reduction Act and Its Impacts on Private Equity and Energy Industries

August 16, 2022

Changes to U.S. Taxation of Carried Interest Dropped from Proposed Inflation Reduction Act of 2022

August 8, 2022

Schumer-Manchin Proposed Inflation Reduction Act of 2022 Would Have Significant Implications for the Taxation of Carried Interest

July 29, 2022

What the DAO?: A Series on the Legal Issues Raised by the Latest Crypto Trend

July 18, 2022

What the DAO? Nothing Is Certain—Especially DAOs and Taxes

May 11, 2022

Press Releases

O’Melveny Represents Buyer Group Led by Fang Holdings in Going Private Transaction of China Index Holdings

December 26, 2022

O’Melveny to Add 11 New Partners in 2023

December 14, 2022

O’Melveny Represents Rainmed Medical in its Hong Kong IPO

July 8, 2022

O’Melveny Advises SK E&S in Acquisition of EverCharge

March 25, 2022

O’Melveny Advises CJ ENM in Acquisition of Endeavor Content Valued at US$850 Million

November 23, 2021

O’Melveny Represents Acotec Scientific in US$210 Million Hong Kong IPO

August 24, 2021

O’Melveny Represents Underwriters in Hong Kong IPO of Shanghai HeartCare Medical Technology Corporation Limited

August 20, 2021

O’Melveny Represents Underwriters in US$183 Million Follow-on Public Offering of Tiger Brokers Shares

June 17, 2021

O’Melveny Advises Samsung Display on US$1.5 Billion Sale of Shares in Corning and in Extension of Investment Relationship

April 8, 2021

In the News