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John Russell McGuire

About me

John R. McGuire is a Denver tax attorney specializing in business transactions, tax planning for individuals & businesses and tax matters before the IRS.  John was born in Columbus, Ohio. He graduated from Indiana University in Bloomington, Indiana Magna Cum Laude and belonged to the Phi Beta Kappa National Honorary Society.  After moving to Colorado, John attended the Denver University College of Law and graduated in 2004.

Since joining the Colorado Bar, John has helped his clients with a wide range of issues. His work involves a variety of business transactions, including the formation and sale of business entities, expansion of business operations overseas, disposition and transfer of business assets and interests, and other ongoing transactions as needed by clients.

Additionally, John has helped his clients with their estate planning issues preparing wills and trusts to transfer wealth and assets. As a Denver tax attorney, John has represented hundreds of businesses and individuals before the Internal Revenue Service to resolve audits, tax liabilities and other tax controversies.

John went back to school to obtain a specialized degree in taxation while working full time, graduating from the University of Denver Graduate Tax Program with an LL.M. in Taxation.  While a student in the LL.M. tax program, John focused primarily on tax issues before the IRS, corporate & partnership transactions and estate & gift planning.  John received the Schramm Scholarship and Graduate Tax Program Scholarship, and worked in the low income tax clinic while attending the graduate tax program.

John also participated in the American Bar Association’s LL.M. Student Tax Challenge. He and his partner’s paper regarding the transfer of cash and business assets between foreign controlled corporations anonymously was chosen as one of four national finalists. As a national finalist, they traveled to San Diego, California to present before some of the most well-known tax professionals in the country at the ABA Tax Section Semi-Annual Conference.

John and his wife Suzette, an optometrist, live in Golden, Colorado.  In his free time, John enjoys skiing, rock climbing, mountaineering, backpacking, and spending time with his family and two dogs.  John is an avid Indiana Hoosier basketball and Ohio State Buckeye football fan.


Photos and videos

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Practice areas


  1. Business: 40%
    11 years, 750 cases
  2. Tax: 40%
    11 years, 750 cases
  3. Estate Planning: 20%
    11 years, 750 cases



Fixed (sometimes), Free consultation (60 minutes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

5 total 

Are you an attorney? Endorse this lawyer

  • Andrew Steven Trexler

    John is a good tax lawyer who has a deep concern for his clients struggling with tax debt. He's very knowledgeable, and I've been happy to trade tax and bankruptcy information with him. I'm happy to endorse this lawyer.


    Andrew Trexler Bankruptcy & Debt Attorney
    Relationship: Worked together on matter

  • No photo

    I have worked with John for over 10 years and know him to be one of the most conscientious, thorough, and fair attorneys out there. John’s knowledge and background in taxation helps both his individual and business clients. John always takes the time to get to know his clients and understand their short and long term goals, which helps accomplish the tasks at hand, and builds strong long term relationships. My experiences with John have been nothing but positive and I would whole heartedly recommend John's services.


    Christopher Stroh
    Relationship: Fellow lawyer in community

Contact info

McGuire Law Firm

1860 Blake Street
Suite 400
Denver, CO, 80202


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Section of TaxationAmerican Bar Association2012
Schramm ScholarshipUniversity of DenverN/A
national finalistAmerican Bar Association’s LL.M. Student Tax ChallengeN/A
Work experience
TitleCompany nameDuration
Owner/AttorneyMcGuire Law Firm2013 - Present
Partner/AttorneyBuckingham & McGuire, LLC2013 - 2014
Partner/AttorneyMcGuire, Todd & Associates2005 - 2013
Association namePosition nameDuration
National Association of Tax ProfessionalsMember2005 - Present
Colorado Bar AssociationAttorney Member2004 - Present
School nameMajorDegreeGraduated
University of Denver Sturm College of LawGraduate Tax ProgramLL.M - Master of Laws2012
University of Denver Sturm College of LawLawJD - Juris Doctor2004
Indiana University School of LawArts & ScienceBA - Bachelor of Arts2000
Speaking engagements
Conference nameTitleDate
American Bar Association, Taxation SectionTransactions between foreign controlled organizations2012