American Institute of Certified Public Accountants
- Minnesota Society of Certified Public Accountants
- American Bar Association Tax Section
- Minnesota Bar Association Tax Section
- Hennepin County Bar Association
- American Association of Attorney - CPAs
- Minneapolis CPA Tax Round Table
- Past Chairman - Tax Determination Committee of Tax Division of American Institute of CPAs
- Past Member - Executive Committee, Tax Division of American Institute of CPAs
- Past Member - Tax Division Administration Committee, Tax Division of American Institute of CPAs
- Past Chairman - Minneapolis CPA Tax Roundtable
- Past Chairman - Minnesota Society of Certified Public Accountants Estate Planning Committee
- Past Member - Minnesota Society of Certified Public Accountants Estate Planning and Financial Conference Committee
- Past Chairman - Minnesota Society of Certified Public Accountants Cooperation with Lawyers Committee
- Past Member - Tax Practice Management, Tax Division of American Institute of CPAs
- Past Tax Partners Roundtable Chairman (North America) - Independent Accountants International (an International Association of Accounting Firms)
- Past Editorial Adviser - The Tax Adviser