Sonal Majmudar is a partner in Mayer Brown's Washington DC office and a member of the Tax practice. Prior to joining Mayer Brown she was former international tax counsel with the Internal Revenue Service (IRS).

Sonal provides comprehensive representation and counseling on transfer pricing matters, including negotiating advance pricing agreements (APAs) with US and foreign tax authorities, and resolving double tax cases through the mutual agreement procedure (MAP) of bilateral tax treaties. She brings broad, cross-industry experience, with in-depth knowledge of critical tax issues arising in banking and financial services, life sciences, technology and consumer products, among other sectors.

At the IRS, Sonal served with the Advance Pricing and Mutual Agreement program, where she led the development and negotiation of complex APAs and resolved MAP cases with treaty partners in Europe, Asia and North America. She also worked on the World Bank’s global tax team advising the G20 Presidency on key issues in international taxation, including taxation of the digital economy and transparency. Sonal began her legal career with the US Customs and Border Protection’s Office of the Chief Counsel.

Spoken Languages

  • English
  • Gujarati
  • Spanish


Georgetown University Law Center, LLM in Taxation

Southwestern Law School, JD, cum laude

  • Southwestern Law Review, Special Projects Editor; Staff Member
  • Regional Champion (1st Place), Jessup International Law Moot Ct. Competition, 2001; 1st Place Brief, 3rd Place Team, Jessup International Law Moot Ct. Competition, 2000; Best Oralist Finalist, Intramural Moot Ct. Competition, 1999

University of California, Riverside, BA, Economics with Minor in Philosophy
Flour Foundation Scholar; Dean's List



  • California
  • District of Columbia


  • US Court of International Trade
  • US Tax Court