• B.A., University of Texas at Austin
  • J.D., Baylor Law School
Professional Experience


  • Partner, Transactional Tax Group Leader, Ryan Law
  • Partner, Reed Smith, LLP
  • Partner, Martens, Todd, Leonard & Ahlrich


  • Texas Department of Insurance

Danielle is the Practice Leader for the firm’s multi-state Transactional Tax Group. Danielle and her colleagues litigate sales and use tax, corporate income/franchise tax, and other state tax matters across the U.S. for taxpayers in all industries.

Before joining Ryan Law, Danielle was a partner in both a boutique state tax firm and then an international “big law” firm. At Martens, Todd, Leonard & Ahlrich, Danielle focused her practice on Texas tax controversy, litigating issues of first impression and statewide importance and securing favorable judgments or settlements. At Reed Smith, LLP, Danielle expanded her practice to include multi-state advice and counsel and controversy work.

Danielle is a detail-oriented lawyer who represents her clients with zealous advocacy and stays current on emerging trends and issues. Danielle’s experience includes:

  • Litigating Texas sales and use tax matters, including data processing, exemptions, and the taxability of construction and oil and gas projects
  • Litigating various aspects of the Texas franchise tax, including the research & development credit, the cost of goods sold deduction, and revenue exclusions
  • Multi-state apportionment litigation
  • Multi-state litigation challenging the constitutionality of various taxes

Areas of Expertise

Sales & Use Tax
Corporate Franchise Tax
State Tax
Admitted to Practice
  • Texas – 2009
Awards & Recognition
  • Selected through peer review for inclusion in The Best Lawyers in America© for Tax Law, 2023-2024
  • Texas Super Lawyers for Tax: Business, 2020-2022
  • Austin Monthly Top Lawyer in Tax, 2019-2024
Press Quotes
  • 1 July 2022 “Top 5 State & Local Tax Cases Of 2022: Midyear Report” Law 360
  • 13 April 2022 “Texas Franchise Tax Ruling for Sirius XM Leaves Rules in Limbo” Bloomberg Tax
  • 5 April 2022 “Sirius’s Sourcing Approved by Texas Supreme Court” Accounting Today
  • 28 March 2022 “Texas Supreme Court Rules for Sirius in Sourcing Dispute” Tax Notes
  • 3 January 2022 “State And Local Tax Cases To Watch In 2022” Law360
  • 1 December 2021 “Texas High Court Ponders Sourcing of Sirius Subscription Receipts” Tax Notes
  • 3 September 2021 “Texas Justices Will Hear Sirius XM $2.5M Tax Refund Case” Law360
  • 5 February 2021 ”Texas Gov. Proposes Banning Transaction Taxes” Law360