SDCL § 10-1-33: Economic and financial information required of individuals, partnerships, associations, and corporations.

The secretary of revenue shall require individuals, partnerships, companies, associations, and corporations to furnish information concerning their capital, bonded and other debts, current assets and liabilities, value of property, earnings, operating and other expenses, taxes, and all other facts that may assist the secretary in ascertaining the value and the relative tax burden borne by all kinds of property in the state.