Jamin Koo advises clients across a broad range of tax issues, including international and domestic tax planning and acquisition and financing transactions. He works with numerous U.S. and non-U.S. clients (in particular, several Asia-based clients) on cross-border investments, joint ventures, and restructurings. His expertise includes taxation of debt instruments, derivatives, and other financial instruments, and he has been providing tax advice related to digital assets to a number of clients.

Most recently, with his background in engineering and environmental science, Jamin has been advising clients in a number of industries on various issues involving tax credits and other tax provisions of the Chips & Science Act and the Inflation Reduction Act and drafting comments to Treasury and the IRS.