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Stephen J. Mayfield

Estate planning Attorney at Salt Lake City, UT

5.0   1 review
Free consultation Virtual consultation available
Free consultation Virtual consultation available
  • State Years
    Wyoming - WY 4 years
    Nevada - NV 17 years
    Utah - UT 19 years
  • Licensed for 4 years
    State WY
    Acquired 2020
    Active No misconduct found
  • Licensed for 17 years
    State NV
    Acquired 2006
    Active No misconduct found
  • Licensed for 19 years
    State UT
    Acquired 2004
    Active No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Stephen

Learn Stephen’s areas of practice.

Practice areas
  1. Estate planning
    Draft wills, trusts, powers of attorney, asset protection plans including formation of personal LLCs and asset protection trusts, and complex estate devices such as ILITs, GRATs, QPRTs and CRATs.

    19 years

  2. Guardianship
    Represent families and professional guardians regarding all matters for adult and minor guardianship, including obtaining guardianship, guardianship administration, disputes between existing guardians and interested person. Have been appointed as guardian ad litem for wards to assist with dispute resolution and to secure the rights and interests of a person under a guardianship. Substantial experience in successfully representing guardians in return of property actions against prior theft.

    19 years

  3. Probate
    Represent families and estates in probate court in NV for administration of probate estates and represent estates, executors and beneficiaries regarding litigation matters such as will contests and breaches of fiduciary duty. Similarly represent trustees, beneficiaries and professional fiduciaries for administration of trust estates, including asset allocation and distribution compliance, and represent trustees and beneficiaries in probate court regarding trust litigation matters.

    19 years

  4. Tax
    Advise individuals, small businesses and corporations regarding tax planning and business organization. Also represent individuals before the IRS regarding tax disputes. Tax and corporate practice also includes transactions and mergers & acquisitions for new and developing companies.

    19 years



Stephen J. Mayfield is an attorney at York Howell & Guymon, practicing in the areas of corporate law, asset protection, estate planning, federal tax law, charitable giving and trust and probate administration.  Stephen advises businesses and individuals on various tax issues within the context of corporate transactions, emerging entities, and estate plans. He assists entrepreneurs form limited liability companies and corporations, and he advises medical professionals with practice administration, compliance and restructuring. Stephen represents clients regarding mergers and acquisitions, leases, non-disclosure agreements, non-compete agreements, and purchase agreements.  He also assists companies and individuals with succession planning and preparation of buy-sell agreements.  Stephen has also successfully represented clients before the Internal Revenue Service.  Stephen is licensed in Utah and in Nevada where he practiced for a prominent Las Vegas law firm for five years before returning to Utah in 2013.  He continues to represent Nevada clients and others who seek to utilize Nevada’s favorable asset protection laws and devices.  Stephen currently serves on the Board of Directors for the Food and Care Coalition located in Provo, Utah.


Stephen is a graduate of the University of Utah and the Chicago-Kent College of Law (Illinois Institute of Technology).  He earned his LLM in Taxation from Denver University.  Stephen lives in American Fork, Utah with his wife and three children where his son Neil is currently a member of the nationally recognized American Fork High School Marching Band.  Stephen speaks Japanese having lived in Japan for three years, including one year studying on scholarship at the University of Shinshu in Nanago, Japan.  He is also an avid cyclist and skier.



York Howell & Guymon
6405 S. 3000 E.
Suite 150
Salt Lake City, UT, 84121


5.0 / 5.0
  1 customer review
5 Star
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1 Star
Posted by Bill | November 2, 2015
This review is from a person who hired this attorney.
| Hired Attorney
Excellent Job for My Business
Stephen helped my business in two business areas. He advised and them helped me set up an s-corp. Then reviewed a complicated contract from a major corporation where I was going to consult. He provided excellent advice and guidance that the potential client accepted, saving my business money. I describe Steve as very engaging, very talented, and honest. While most people do not look forward to working with an attorney, Steve is a person that you should sincerely consider within any of his practice areas. York, Howell, and Guymon is a great firm. In the future, I would not hesitate to use Steve's services again. Thank you!
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  • Free Consultation 30 minutes
  • Retainer Sometimes
Payment methods
Cash, Check, Credit Card


AVVO RATING 7.5 (Very Good)

Work Experience

  • Partner
  • York Howell & Guymon
  • 2014 - Present
  • Of Counsel
  • Richards Brandt Miller Nelson
  • 2013 - 2014
  • Senior Associate
  • Hutchison & Steffen
  • 2008 - 2013
  • Associate Attorney
  • Gerrard, Cox & Larsen
  • 2006 - 2008
View all work experience


  • University of Denver
  • LL.M - Master of Laws
  • 2005
  • Chicago-Kent College of Law Illinois Institute of Technology
  • JD - Juris Doctor
  • 2004
  • University of Utah
  • BA - Bachelor of Arts
  • 1998


  • Salt Lake Estate Planning Council
  • Member
  • 2013 - Present
  • State Bar of Nevada
  • Member
  • 2006 - Present
  • Utah State Bar
  • Member
  • 2004 - Present

Languages Spoken

  • Japanese
  • English

Honors and Awards

  • Utah Legal Elite
  • Top Lawyers in Utah
  • 2016

Speaking Engagements

  • Salt Lake Estate Planning Council Meeting
  • Estate Planning for Retirement Benefits
  • 2016
  • 2016 Spring Convention
  • Estate Planning for Retirement Benefits
  • 2016

Attorney endorsements

Received (1)
Given (1)
Endorse Stephen
Estate planning Attorney | Jan 29
Relationship: Fellow lawyer in community
"Steven is a proven professional whose focus in the fields of Asset Protection & Estate Planning makes it a pleasure to share membership in the Nevada Forum of WealthCounsel. He is a dedicated and focused attorney whose professionalism, insight and professional skill set make in a valuable advisor for any client seeking top-level representation. Steve is a credit to the legal profession and I am pleased to give him my highest Peer Endorsement."

Avvo Contributions

This attorney hasn't created any legal answers in Q&A or legal guides recently on Avvo.

Salt Lake City Estate planning Lawyer Stephen J. Mayfield
Stephen J. Mayfield
Estate planning Attorney
Salt Lake City, UT
Licensed for 19 years
Free Consultation
Virtual consultation available