
Tax
USA Guide 2026 : Oklahoma
Rankings

Ranked Individuals
Ranked Individuals
About
Provided by Hartzog Conger Cason LLP
Hartzog Conger Cason’s Tax practice delivers premier counsel in sophisticated tax planning, tax controversy, tax credit finance and business incentive matters. Known for technical command and practical judgment, the practice helps clients protect value, structure opportunity and resolve complex issues with confidence.
The firm represents clients in audits, administrative proceedings and tax litigation before the IRS, Oklahoma Tax Commission, United States Tax Court, federal district court and Tenth Circuit Court of Appeals. Additionally, the team’s attorneys offer expertise in state and local tax credits and development incentives, including Oklahoma historic rehabilitation tax credits, Oklahoma zero-emission facilities tax credits, Oklahoma clean-burning motor vehicle fuel property credits, tax increment financing, ad valorem tax abatement, and sales tax exemptions. They have the experience and innovative techniques necessary to structure and successfully these complicated transactions.
In incentive matters, Hartzog Conger Cason helps clients improve project feasibility, financing strategies and long-term value. For private clients and business owners, the firm delivers sophisticated planning counsel that preserves wealth, supports continuity and structures important decisions with tax efficiency in mind.
Clients turn to Hartzog Conger Cason for consequential tax matters. The practice combines top-tier analysis and service with the perspective of a full-service law firm.
Chambers Review
Provided by Chambers
Strengths
Provided by Chambers
Hartzog Conger Cason is organized, stays on top of the projects and delivers timely results.
Tax respondentUSA
Notable Practitioners
Provided by Chambers
Band 1 
Band 1 
Len Cason
Len Cason has a broad practice which includes tax controversies and litigation, the administration of trusts and estates, asset protection, corporate law, estate planning, and mergers and acquisitions.
Band 1 
Band 1 
Steven C. Davis
Steven Davis is a highly regarded tax attorney with extensive experience advising a broad array of clients on all aspects of tax law. Steven Davis is the most knowledgeable tax lawyer in the state of Oklahoma.
Tax respondentUSA
Band 2 
Band 2 
J. Christian Guzzy
Christian Guzzy is a well-regarded tax attorney with notable expertise in transactional matters. He has additional expertise in environmental law.
Ranked Individuals at Hartzog Conger Cason LLP (3)
Members
Provided by Hartzog Conger Cason LLP

Steven C. Davis
View profile of Steven C. Davis
J. Christian Guzzy
View profile of J. Christian Guzzy
Len Cason
View profile of Len Cason
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