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About me

Founded in 1982, the law firm of William D. Hartsock specializes in tax law services. This tax law firm concentrates on not only providing the legal services necessary to defend your rights before the IRS and Franchise Tax Board, but also the accounting and book keeping services that are an integral part solidifying your case. We have tax attorneys, CPA's, enrolled agent, tax preparers and book keepers all in one firm, each specializing in their own particular field. In this way we are able to offer the most aggressive tax services available. 


William D. Hartsock earned his Masters in taxation at the University of San Diego- School of Law after completing University of San Diego School of law Juris Doctorate and an undergraduate Accounting Degree at the University of Nebraska-Lincoln.



Photos and videos

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Practice areas


  1. Tax: 60%
    32 years, 2 thousand cases
  2. Tax Fraud: 40%
    32 years, 1 thousand cases



Free consultation (60 minutes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

2 total 

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  • Jeffrey R. Pratt

    Bill is smart, knowledgeable, and experienced - an excellent attorney whom I highly recommend.


    Jeffrey Pratt Real estate Attorney
    Relationship: Fellow lawyer in community

  • Gayle Mayfield-Venieris

    Bill is an excellent tax attorney, knowledgeable, experienced, responsive, thorough, and genuinely cares about obtaining the best results for his clients. Bill has done an excellent job for each and every client that I've referred to him over the years and I highly recommend him.


    Gayle Mayfield-Venieris Business Attorney
    Relationship: Fellow lawyer in community

Contact info

The Tax Lawyer - William D Hartsock Tax Attorney Inc

12636 High Bluff Drive, Suite 110
San Diego, CA, 92130-2071


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Certified Specialist - Taxation LawState Bar of California1994
Work experience
TitleCompany nameDuration
Lead AttorneyWilliam D Hartsock, Tax Attorney Inc.1982 - Present
Association namePosition nameDuration
San Diego County Bar Association, Pro Se CommitteeChaiman2000 - Present
San Diego County Bar AssociationMember1987 - Present
Los Angeles County Bar AssociationMember1987 - Present
School nameMajorDegreeGraduated
University of San Diego School of LawN/ALL.M - Master of Laws1994
University of San Diego School of LawLawJD - Juris Doctor1987
University of Nebraska College of LawAccountingN/A1983