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also known as Brandon Keim
Prior to joining Frazer Ryan Goldberg & Arnold LLP to represent taxpayers nationwide, Brandon served six years at the IRS as a senior trial attorney. At the IRS, Brandon received the Chief Counsel National Award for Superior Achievement in Outstanding Litigation, and he was routinely recognized for his service as a trial attorney.
In 2015, Brandon successfully litigated the first Section 831(b) captive insurance case before the U.S. Tax Court; he litigated a second captive insurance case in 2016. For over four years, he oversaw and advised IRS attorneys and revenue agents auditing captive insurance transactions nationwide. Brandon also acted as an advisor to IRS attorneys on partnership and estate and gift tax matters and was an instructor at a national course designed to train new IRS trial attorneys on all aspects of practice.
Brandon has the experience and knowledge to handle a broad scope of tax controversy matters. In addition to Section 831(b) captive insurance matters, his tax litigation experience includes corporate, partnership, collection, and complex estate and gift tax matters; employment tax; property tax; international tax matters; abusive transactions; and fraud.
Brandon is a CPA and a former financial statement auditor who offers a strong understanding of accounting and business concepts in tax matters.
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Chat withState: Arizona
Acquired: 2011
No misconduct found
1850 N. Central Ave., Suite 1800, Phoenix, AZ, 85004
49 Client Reviews
Showing 1 - 5 of 47 reviews | Tax
Posted by anonymous | April 13, 2026 | Hired Attorney | Tax
An exception and outstanding lawyer – so do not look further
We feel extremely fortunate to have been referred to Brandon by our estate attorney. He is undoubtedly the best lawyer in Arizona and likely ranks among the best in the nation. From the very beginning, he arranged an in-person meeting while we were traveling and later set up a virtual meeting as well...
Posted by Amjad | March 20, 2026 | Hired Attorney | Tax
One of the Best Tax lawyers
I engaged Brandon 4 years back to represent my wife in a wrongfully applied heavy penalty by IRS on the inheritance property. From the outset, he demonstrated a deep understanding of tax law and an impressive ability to break down complicated issues into clear, manageable steps. His guidance was pr...
Posted by Sandra | November 27, 2025 | Hired Attorney | Tax
IRS DEBT
I am immensely grateful to Brandon Keim and Riley Thorson. Brandon is a great person and a great attorney . I owned to IRS over 20 k and Brandon was able to settle for 500 $ with an OIC . He is extremely responsive and took care of my situation with outstanding attention to details .He achieved a re...
Posted by Dale | February 21, 2025 | Hired Attorney | Tax
President
We had an issue with AZ DOR not interpreting their own code correctly. We and our CPA had multiple discussions with the DOR representative over several months and could not get through to them. We Contacted Attorney Keim and the problem was resolved within a month. He was very concise on what we n...
Posted by Tadd | February 16, 2025 | Hired Attorney | Tax
Effective communicators, excellent results.
Great experience working with Brandon and Riley. They drafted a professional letter which was sent to the IRS to clear up an issue with the allocation of funds I paid on a previous tax year. The result was a success and I would not hesitate to recommend this firm if you need help resolving a tax re...
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2015
Superior Achievement in Outstanding Litigation, IRS Office of Chief Counsel
2009 - 2009
Judicial Intern, Hon. Mary H. Murguia, U.S. District Court, District of Arizona
2016 - Present
American Bar Association, Taxation SectionMember
2016 - 2016
State Bar of Arizona, Tax Law SectionExecutive Council Member
2012 - 2016
U.S. Tax Court LiaisonMember
2018
Taxation LL.M.
2011
Juris Doctorate (J.D.)
2006
B.B.A
2018
Insights Working and Litigating at the IRS
2017
When a Taxpayer Goes to Tax Court
2012
English