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About me

I am a 30-year IRS Chief Counsel veteran with almost 10 years of private tax practice focusing on complex audits, Tax Court litigation, large dollar IRS collection problems and offshore compliance and voluntary disclosures. My objectives are to make my skills and expererience available to individuals, corporations, and tax practitioners to resolve IRS issues quickly and effectively.


Languages spoken: English, Spanish

Practice areas


  1. Tax: 100%
    4 years

Attorney endorsements

2 total 

Are you an attorney? Endorse this lawyer

  • Joseph E Maloney

    I endorse this lawyer. I worked with Steven many times when he was a senior IRS lawyer and I was with the US Attorney's office. He is a leading figure in this area of legal practice.


    Joseph Maloney Employment and labor Attorney
    Relationship: Worked together on matter

  • Robert Michael Wilson

    I endorse this lawyer.


    Robert Wilson White collar crime Attorney
    Relationship: Worked together on matter

Contact info

Mopsick Tax Law, LLP

3600 American River Dr Ste 220
Sacramento, CA, 95864-5950


DCActive 197207/10/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Peer Review RatedMartindale-Hubbell2015
Work experience
TitleCompany nameDuration
Federal Tax AttorneyMopsick Tax Law, LLP.2003 - Present
Principal PartnerMopsick & Williams, LLP.2005 - 2011
AttorneyWeintraub Genshlea Chediak2003 - 2005
Adjunct Professor of LawUniversity Of The Pacific, McGeorge School Of Law1993 - 2003
District CounselInternal Revenue Service Chief Counsel's Office1984 - 2002
Special Assistant to the Deputy Chief CounselInternal Revenue Service Chief Counsel's Office1981 - 1984
Trial AttorneyInternal Revenue Service1975 - 1979
Tax Law SpecialistInternal Revenue Service Chief Counsel's Office1970 - 1974
Association namePosition nameDuration
American Citizens AbroadProfessional Tax Advisory Council2012 - Present
Publication nameTitleDate
Tax NotesTax Justice for Americans Abroad2012
Tax Notes InternationalTax Justice for Americans Abroad2012
School nameMajorDegreeGraduated
Georgetown University Law CenterTaxationLL.M - Master of Laws1974
Boston College Law SchoolLawJD - Juris Doctor1970
Rutgers UniversityLiberal ArtsOther - Bachelors1967

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