Mr. Jahansouz is a federal tax controversy and litigation attorney whose practice focuses on representing businesses and high-net-worth individuals in complex disputes with the IRS and DOJ. His practice spans all stages of federal tax controversy, including IRS examinations, administrative appeals, litigation, employment tax matters, voluntary disclosures, offshore compliance, promoter investigations, and penalty abatements.

Mr. Jahansouz has substantial experience handling sophisticated tax controversy matters involving closely held businesses, investment structures, and high-value transactions. His white-collar practice focuses primarily on tax-related criminal matters and other financial crimes, including money laundering, bankruptcy fraud, wire fraud, healthcare fraud, mortgage fraud, and structuring.

He has represented Qualified Opportunity Funds and Real Estate Investment Trusts in obtaining late-election relief through private letter rulings from the Internal Revenue Service. He also has significant experience defending micro-captive insurance arrangements and advising clients facing IRS scrutiny of alleged “tax shelters.”

Prior to joining the firm in 2023, Mr. Jahansouz was a Senior Manager in the tax controversy group of a national full-service advisory and accounting firm, where he represented large companies and high-net-worth individuals in significant IRS disputes. Earlier in his career, he practiced at a Fort Worth law firm where he handled both civil and criminal tax matters.

Mr. Jahansouz has been recognized in Best Lawyers®: Ones to Watch in America for Tax Law (2025).

He was admitted to practice in Texas in 2011.

  • Best Lawyers®: Ones to Watch in America for Tax Law, 2025
  • Best Lawyers in Dallas, D Magazine for Tax: Litigation, 2026
  • Texas Federal Tax Institute 2026 Conference (Link)
  • ABA 2026 May Tax Meeting (Link)
  • Allinial Global Summit 2025 (Link)
  • International Tax Group Two-Day Event (Link)
  • Dallas Bar Association Tax Section November Meeting (Link)
  • ABA Section of Taxation 2025 May (Link)
  • Meadows Collier May Webinar (Link)
  • American Bar Association 2025 Midyear Tax Meeting (Link)
  • $2.3m Penalty for a Swiss Bank Account Might be Excessive, Even When the Account Was Opened in the Name of the Taxpayer’s Dog (Link)
  • 18 Meadows Collier Lawyers Recognized by D Magazine Best Lawyers in Dallas (Link)
  • Texas Federal Tax Institute 2026 Conference (Link)
  • ABA 2026 May Tax Meeting (Link)
  • Firm attorneys Naveid P. Jahansouz, Cody R. Gackle, and Jeffrey M. Glassman, were featured in the Tax Note article “Attorneys Recently Disbarred From the Tax Court” (Link)
  • Naveid P. Jahansouz and Jana L. Simons Named the Newest Partners at Meadows Collier (Link)
  • Fifth Circuit Rejects IRS “Passive Investor” Test for Limited Partners in Self-Employment Tax Case (Link)
  • Naveid Jahansouz was quoted in a Law360 Tax Authority Article “Top Federal Tax Cases to Watch in 2026” (Link)
  • Allinial Global Summit 2025 (Link)
  • International Tax Group Two-Day Event (Link)
  • Dallas Bar Association Tax Section November Meeting (Link)
  • ABA Section of Taxation 2025 May (Link)
  • Meadows Collier May Webinar (Link)
  • American Bar Association 2025 Midyear Tax Meeting (Link)