Mark Erwin is the Acting Deputy Associate Chief Counsel, Financial Institutions & Products. Mr. Erwin provides oversight in the development and publication of regulatory and other administrative guidance, legal advice, and litigation support on tax matters involving banks, insurance companies, regulated investment companies, real estate investment trusts, asset securitization arrangements, debt obligations, derivatives, hedging arrangements, and tax exempt bonds.

From 2012 to 2017, he was a Branch Chief in the IRS Office of Associate Chief Counsel (International).  Prior to joining the IRS Office of Chief Counsel in 2006, he was a tax associate at several law firms in Washington DC. 

Mr. Erwin received his B.A. magna cum laude from Trinity University in 1992.  He received his Ph.D. in English Literature from Princeton University in 1998 and his J.D. cum laude from New York University School of Law in 2002.