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Meet Our Partners

Matt Mattecheck
Contact Matthew

Delap Headquarters

5885 Meadows Road, No. 200
Lake Oswego, OR 97035

Matthew J. Mattecheck

Partner | CPA

Education: University of Portland, B.A., Business Administration specializing in Accounting

As a tax partner, Matt has extensive experience managing tax and accounting engagements for closely held companies in a variety of industries. His depth of knowledge about tax planning and compliance allows him to serve as his clients’ primary trusted advisor through the complexities of their tax obligations and financial decisions.

Matt also develops and presents technical training workshops for tax accountants and has provided expert witness testimony for litigation matters.

After spending a year in Salzburg, Austria, Matt decided to major in accounting in college after realizing it was the backbone of all business. Before joining Delap, he spent five years working as a manager for Perkins & Co. in Portland.

A native Oregonian, Matt enjoys spending time with his wife, Sarah, and their three children outside the office. He enjoys traveling, golfing, hiking, and fishing. Besides being a faithful fan of his Portland Pilots, Matt also is a diehard fan of the Washington Redskins and Notre Dame Fighting Irish.


Learn More About Matthew

Practice Emphasis

  • Business advisory and tax planning for closely held businesses
  • Industry specialty areas include real estate, personal service, and automotive


  • Oregon Society of Certified Public Accountants
  • American Institute of Certified Public Accountants
  • Tualatin Youth Sports Coach
  • Resurrection Catholic Parish, Former Finance Committee Chair
  • LifeWorks NW, Former Board Member
  • University of Portland Pamplin School of Business Advisory Board, Member