Part II · Jurisdictions · No. 03

South Dakota

The leading U.S. trust jurisdiction. Perpetual dynasty trusts since 1983, no state income tax on trusts, the directed-trustee statute, a robust asset-protection regime, and an established infrastructure of state-chartered trust companies built around the framework.

Why this jurisdiction matters

South Dakota deliberately built a trust jurisdiction beginning in the 1980s. Statutory reforms abolished the common-law rule against perpetuities (1983; SDCL §43-5-8), established the directed-trustee construct, recognized statutory protectors, enabled decanting, and tightened asset-protection-trust provisions. The result is a state with one of the largest trust-asset bases in the United States — held in state-chartered trust companies serving non-resident families across the country and abroad.

The relevant tax regime

• No state income tax. South Dakota imposes no individual or corporate income tax. South Dakota therefore levies no income tax on non-grantor trusts sited there; the open question is whether another state (the settlor’s, trustee’s or a beneficiary’s) can tax the trust.
• State sales tax. 4.2% state rate from 1 July 2023 through 30 June 2027 (temporarily reduced from 4.5% by HB 1137), plus municipal taxes.
• No state estate or inheritance tax.
• Bank franchise tax. Trust companies, like banks, pay the state bank franchise tax on net income (SDCL ch. 10-43) and annual Division of Banking fees.

Registration or residency mechanics

Trust situs in South Dakota requires:

• South Dakota trustee (institutional or individual; institutional trustees are state-chartered trust companies licensed by the Division of Banking).
• Administrative activities in South Dakota.
• South Dakota choice-of-law and forum-selection provisions in the trust instrument.
• For self-settled asset-protection trusts: compliance with the Qualified Dispositions in Trust Act, SDCL §§55-16-1 to 55-16-17 (including a qualified South Dakota trustee and a generally two-year limitation period for creditor claims against transfers).

Reporting and disclosure

Trust records are private. State law specifically permits “quiet trusts”: SDCL §55-2-13 lets the trustor, a trust advisor or a trust protector restrict or eliminate beneficiaries’ rights to be informed of the trust. Since FinCEN’s March 2025 interim final rule, LLCs formed in the U.S. (including those held by trusts) are exempt from Corporate Transparency Act beneficial-ownership reporting.

The substance question

The §301.7701-7 domestic-trust test (court and control) requires that a U.S. court exercise primary supervision and a U.S. person control substantial decisions. South Dakota satisfies both readily. The substance question is whether the connection to South Dakota is sufficient to make it the trust's state of residence for state income tax (and to displace another state's connection-based residency claim). North Carolina Department of Revenue v. Kimberley Rice Kaestner 1992 Family Trust, 588 U.S. 262 (2019), held that a state cannot tax undistributed trust income based solely on the residence of in-state beneficiaries who had no right to, and did not receive, distributions. The holding is deliberately narrow, but it supports trusts sited outside the beneficiaries’ home states.

Recent changes

South Dakota statutes are updated annually with refinements to trust law, asset protection, and decanting. The state continues to compete with Delaware, Nevada, and Alaska for trust business. The 2021 Pandora Papers disclosures put South Dakota trust companies in the spotlight, prompting reform discussion and only limited changes to the state’s trust regime. The temporary 4.2% sales-tax rate is scheduled to expire on 30 June 2027.

Common asset classes parked here

• Dynasty trusts holding family LLCs holding luxury assets (yachts, art, real estate).
• Domestic asset-protection trusts under SD Codified Laws ch. 55-16.
• Quiet trusts for sensitive family situations.
• Insurance-funded irrevocable life insurance trusts.

Reviewed October 2026