About
Mary K. Kay is an associate attorney at Kay Casto & Chaney PLLC in Charleston whose practice focuses on estates and trusts, commercial litigation, and transactions. Her work includes estate planning law, tax law, trusts and estates, and related disputes. She previously served as a term law clerk to the Honorable Robert B. King of the US Court of Appeals for the Fourth Circuit. The clerkship provided experience with complex federal appellate matters.
Ms. Kay earned her J.D. from West Virginia University College of Law, graduating in the top 20 of her class. She served as Executive Editor of the West Virginia Law Review and received the CALI Award in Estate Planning. She earned her B.B.A. in Management Information Systems from the University of Georgia. Her legal education included appellate work through the United States Supreme Court Clinic.
Ms. Kay gained additional experience through legal internships with West Virginia firms before entering practice. Her current work encompasses commercial tax matters, trusts and estates, estate planning, and litigation involving tax and trust issues. She is admitted to practice before the West Virginia Supreme Court of Appeals and the US District Court for the Southern District of West Virginia. Her admissions extend to the US Court of Appeals for the Fourth Circuit.
Mary K. Kay combines estate and commercial practice with experience in federal appellate matters. Her professional involvement includes the Women’s Leadership Counsel and Community Service Counsel at West Virginia University College of Law. She has also served as a volunteer tax preparer through the VITA Program. Her background in estate planning, tax matters, trusts, transactions, and litigation supports clients facing interconnected financial and legal concerns.
Law Office Affiliations
- Associate Attorney, Kay Casto & Chaney PLLC
- Member, West Virginia State Bar
Licensed State
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West Virginia
Education
- West Virginia University College of Law
Juris Doctor (JD) - University of Georgia
Bachelor of Business Administration (BBA)

- Power of Attorney
- Trusts
- Wills & Living Wills




