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Daniel Lee O'Neil

Practice areas:

Tax, Wills & Living Wills, Estate Planning, Lawsuits & Disputes

Daniel O'Neil

About Me

Former tennis pro. Current dog owner.


Photos and Videos

3405797 1396620286

Practice Areas

Licensed since 2010

  1. Tax: 36%
  2. Wills & Living Wills: 32%
  3. Estate Planning: 20%
  4. Lawsuits & Disputes: 12%


Payment Types:

Cash, Check

Attorney Endorsements

26 total 

  • Jeffrey Scott Hyslip

    I endorse this lawyer.


    Jeffrey Hyslip Litigation Attorney
    Relationship: Fellow lawyer in community

  • Howard M Lewis

    I endorse this lawyer. Attorney O'Neil is an outstanding Tax Attorney with an exceptional reputation. He is a strong and zealous advocate for his clients and a credit to the legal profession. I highly recommend his legal services.


    Howard Lewis Divorce & Separation Attorney
    Relationship: Fellow lawyer in community

Contact Info


TXEligible To Practice In Texas 201005/02/2015

Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
Top Contributor - TaxAvvo2015
Featured Attorney - TaxAvvo2015
Featured Attorney - TaxAvvo2014
Top Contributor - TaxAvvo2014
Top Contributor - TaxAvvo2013
Featured Attorney - TaxAvvo2013
Featured Attorney - TaxAvvo2012
Top Contributor - TaxAvvo2012
Top final exam grade: Tax EthicsUniversity of Houston Law Center2011
Top Contributor - TaxAvvo2011
Featured Attorney - TaxAvvo2011
Top Exam Grade in Oil, Gas, and Mineral Law (Spring 2009)South Texas College of Law - Professor Michael D. Jones2009
Top Exam Grade in Texas Marital Property & Homestead (Fall 2009)South Texas College of Law - Professor Pam George2009
Public Interest StipendSouth Texas College of Law2009
Pro Bono Honors ProgramSouth Texas College of Law2008

Work Experience
TitleCompany NameDuration
AttorneyParadigm Partners2012 - 2012
AttorneyAlliant Group2012 - 2013
Attorney in Large Business & International (LB&I)IRS Office of Chief Counsel2011 - 2011
AttorneyHouston Volunteer Lawyers Program2010 - 2012
Associate Coach of the University of Houston Forensic SocietyUniversity of Houston2010 - 2013
Law Clerk in the Federal Litigation sectionAbraham Watkins Nichols Sorrels Matthews Friend2010 - 2010
AttorneyThe O'Neil Law Firm2010 - Present
Law Clerk in the Tax DivisionFulbright & Jaworski2009 - 2010
Corporate Claims & Litigation Law ClerkThe Methodist Hospital2009 - 2009
Pro Bono Honors Program FellowHouston Volunteer Lawyers Program2008 - 2009

Association NamePosition NameDuration
Garland R. Walker American Inn of CourtPupillage Group TwoN/A
Psi ChiAlumniN/A
Phi Alpha ThetaAlumniN/A
Mortar Board National College Senior Honor SocietyAlumniN/A
Order of OmegaAlumniN/A
Sigma Phi EpsilonAlumniN/A
Phi Delta Phi legal honors fraternityBarristerN/A
College of the State Bar of TexasMemberN/A
United States District & Bankruptcy Courts for the Southern District of TexasAdmitted to PracticeN/A
Bar Association of the Fifth Federal CircuitMemberN/A
United States Court of Appeals for the Fifth CircuitAdmitted to PracticeN/A
United States District Court for the Northern District of TexasAdmitted to PracticeN/A
United States Tax CourtAdmitted to PracticeN/A
Houston Volunteer LawyersVolunteer Attorney with the Disability UnitN/A
State Bar of Texas - Taxation SectionMemberN/A
Houston Bar Association, Taxation SectionMemberN/A
Golden KeyAlumniN/A

Legal Cases
Case NameOutcome
IRS Audit - Jackson, MSFavorable client outcome in Fast Track Mediation. PROMINENT DISCLAIMER -- Past outcomes absolutely do NOT guarantee future results
IRS Audit - San Francisco, CAFavorable client outcome in IRS Appeals. PROMINENT DISCLAIMER -- Past outcomes absolutely do NOT guarantee future results
U.S. Tax Court litigationN/A

See all Legal Cases 

Publication NameTitleDate
White PaperTexas Medicaid Fraud - White Paper2014
White PaperCrowdfunding Clinical Trials and Legal Issues - White Paper2014
SvbtleSmall Business/Solo Inventor Technology Transfer blog2014
JuxWhite Collar Criminal Defense blog2013

School NameMajorDegreeGraduated
University of Houston Law CenterTaxationLL.M - Master of Laws2011
South Texas College of LawLawJD - Juris Doctor2010
Southern Methodist UniversityN/ABA - Bachelor of Arts2007

Speaking Engagements
Conference NameTitleDate
TMC Clinical Research Education CourseNegotiation 1022014
Middle Class Legal IssuesAlternative Dispute Resolution Benefits and Burdens: SAPCR Mediation etc.2014
Middle Class Legal IssuesTax controversy explainer for the middle class2014
TMC Clinical Research Education CourseNegotiation 1012013
Middle Class Legal IssuesIRS Fast Track Mediation and Post-Appeals Mediation 1012013
Middle Class Legal IssuesEstate planning issues for the middle class2013
University of Houston Forensic Society & Debate TeamAdvanced Advocacy2012
Middle Class Legal IssuesWhite collar crime in small business and self-employed situations2012
University of Houston Forensic Society & Debate TeamAdvocacy 42011
University of Houston Forensic Society & Debate TeamAdvocacy 32011
University of Houston Forensic Society & Debate TeamAdvocacy 22011
Middle Class Legal IssuesFamily Law e-discovery2011
University of Houston Forensic Society & Debate TeamAdvocacy 12010
Middle Class Legal IssuesTrans* community legal resources2010
Middle Class Legal IssuesHIV and the Law2010
Pupillage Group 2 CLE on Tuesday November 10, 2009Sovereign and Diplomatic Immunity2009