Thomas L. Johnson


Tommy Johnson is a corporate and trusts and estates lawyer at Boyce Law Firm. He represents companies of all sizes—from start-ups to large companies—in corporate matters, including commercial contracting, corporate transactions, corporate governance, real estate, and finance transactions.

Tommy also provides comprehensive estate and business planning services, including wills, irrevocable and revocable trust, estate and gift tax, charitable planning, and post-death administration of estates and trusts.

Tommy believes and takes pride in a “value-add” approach to representing clients, and brings a strong background in business and finance that allows him to add an additional layer of value through a transaction or case. He strives to build long-standing relationships with and become a trusted advisor for businesses, individuals, and families.


Tommy grew up around eastern South Dakota, calling Sioux Falls, Chamberlain, and Watertown one-time homes. After receiving his bachelor’s degrees in Mathematics and Economics from South Dakota State University, he attended the University of Minnesota Law School in Minneapolis. Tommy returned to South Dakota to begin his practice at Boyce Law Firm immediately upon his graduation from law school. Tommy is actively involved in the Sioux Falls community serving on multiple boards of directors for non-profit organizations. He is a Junior Achievement ambassador and teacher and recently completed the Leadership South Dakota development program. He and his wife, Erin, enjoy cooking, trying new restaurants, and spending time with their friends. A self-proclaimed bibliophile and avid reader, Tommy enjoys spending his spare time paging through whatever book has piqued his interest at the time. He also is an avid golfer, hockey player, and bread baker.

His representative practice areas include:

Business Law

  • Entity formation and corporate governance;
  • Operating Agreements, buy-sell agreement, and shareholder agreements;
  • Corporate transactions;
  • Commercial contracts;
  • Debtor/creditor law;
  • Real Estate;
  • Public charities and private foundations;

Estate and Business Planning

  • Wills;
  • Trusts;
  • Business Succession;
  • Powers of attorney;
  • Charitable and gift planning;
  • Post-death administration of wills and trusts;

Health Care

  • HIPAA/HITECH regulatory guidance, including structuring data privacy programs, conducting data breach investigations, and drafting and negotiating business associate agreements;
  • Health care compliance and transactions;
  • Behavioral health care law;
  • Facility and practitioner licensing;


  • State and Federal Courts in South Dakota


  • J.D., University of Minnesota Law School (2013), magna cum laude
  • B.S., B.S., South Dakota State University (2010), summa cum laude
    • Degrees in Mathematics and Economics

Professional and Community

  • Second Circuit Bar Association
  • American Bar Association – Business Section
  • Sioux Falls Young Professionals Network
  • Junior Achievement of South Dakota – Ambassador and Teacher
  • National Alliance on Mental Illness (NAMI) Sioux Falls – Director
  • Dakota Business Finance – Membership Board member

Publications and Presentations

  • Physician Compensation Arrangements – Midwest Medical Edition (Sept/Oct 2015)
  • Employment Law – Documentation and Discipline (2015)