SDPC’s sister company, South Dakota Trust Company LLC (SDTC) is a national boutique trust company founded by Al W. King III and Pierce H. McDowell III, and headquartered in Sioux Falls, South Dakota.

Currently, SDTC has more than $140 billion in assets under administration and $82 billion under agency and currently works with over 115 billionaire and 360 centimillionaire clients. These valued clients have chosen SDTC as a result of SDTC’s exceptional service, combined with South Dakota’s top-rated trust, privacy, asset protection, income tax, and private family trust company laws.

SDTC’s business is designed to accommodate the needs and desires of wealthy clients, both domestically and internationally, providing “flexible, cost- effective, service-oriented trust administration” in the #1 rated domestic trust jurisdiction. SDTC’s core focus is to serve families’ individual goals, while preserving family wealth in perpetuity.

One of the unique features of SDTC is that it does not offer any products (e.g. investment management, insurance etc.) and consequently works with all outside investment managers, insurance professionals, and custodians of the client’s choice. Additionally, SDTC administers all types of non-financial assets, e.g., closely-held stocks, limited partnerships, residential and commercial real estate, LLCs, oil and gas interests, offshore entities, etc. As an independent and state chartered trust company, SDTC has reciprocity with most states allowing SDTC to administer trusts for families from nearly all states. Hence, these features allow families a great deal of flexibility and control often not possible or provided for in a traditional corporate trustee setting. Please visit to learn more.