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Robert L. Mahon

Listed in Best Lawyers since 2012

Perkins Coie LLP

Bob Mahon, chair of the firm's State & Local Tax practice, focuses his practice on helping clients minimize state and local taxes and comply with state and local tax laws. Bob represents clients in state and local tax audits, refunds, appeals, and litigation, as well as assists clients with tax planning and business transactions. Bob is the past president of the Tax Section of the Washington State Bar Association and teaches State and Local Tax as an adjunct professor at the University of Washington School of Law. He is also a frequent speaker and author on state and local tax issues.


  • Listed in Washington Law & Politics, "Rising Stars of Washington Law"

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1201 Third Avenue, Suite 4900
Seattle, WA 98101-3099
Phone: 206-359-6360
Firm Phone: 206-359-8000

Practice Areas

  • Tax Law (State and Local Tax)

Lawyer of the Year


  • Grinnell College (BA)
  • University of Washington School of Law (LL.M)
  • University of Iowa College of Law (J.D.)

Bar Admissions

  • Washington State Bar Association

Organizations & Affiliations

  • Washington State Bar Association — Member
  • Journal of Multistate Taxation and Incentives — Editor-in-Chief
  • American Bar Association — Member