Lydia Ahn

Ahn Tax & Business Advisors, PLLC was founded by Lydia Ahn, CPA.  After graduating from Western Washington University in 2005, Lydia joined a certified public accounting firm in Bellevue, WA focusing on tax preparation for high net worth individuals and their privately held businesses.  Lydia then joined a 40-person firm where she helped lead the international tax department and was promoted to a partner position.  After working over ten years with certified public accounting firms, specializing in tax and consulting, Lydia founded Ahn Tax & Business Advisors, PLLC in 2015.  Her areas of specialty include partnerships, real estate, professional services, cross-border business, foreign asset holdings and taxation of U.S. persons living abroad. Lydia helps businesses manage their world-wide tax liability and explore implications of cross-border investments and operations. Lydia is a regular presenter on cross-border and real estate topics in Washington, British Columbia and Alberta.


  • B.A. in Accounting from Western Washington University
  • Golden Gate University graduate courses: Principles of International Taxation and Taxation of Foreign Persons with U.S. Activities
  • Transformation Leadership Program, Convergence Coaching
  • Member, Washington Society of Certified Public Accountants
  • Member, American Institute of Certified Public Accountants
  • Member, Washington Society of Certified Public Accountants, International Tax Committee


  • 2016 WSCPA Outstanding Volunteer Leader Award – Recognizes an active WSCPA member for outstanding service and dedication and/or innovative and inspirational WSCPA leadership


  • Board member and immediate past chair of the Bellingham Chapter of the WSCPA
  • Speaker, Pacific Tax Institute, Seattle, WA
  • Speaker, Edmonton Chartered Accountant’s Forum North, Alberta
  • Speaker, BC/WA Cross-Border Expo
  • Speaker, Porter Hétu International, Vancouver, BC
Scroll to Top