Okla. Stat. tit. 6, § 1607
A. Each international bank agency shall hold, in this state, assets which bear such relationships as the Board shall by rule prescribe to the aggregate liabilities of the international bank agency payable in this state or resulting from the operations of the international bank agency. The amount of such assets shall be equal to not less than one hundred five percent (105%) of the amount of such liabilities. However, the Board by rule may reduce the required amount of assets to not less than one hundred percent (100%) of the amount of such liabilities. When promulgating any such rule, the Board shall take into account the objective of maintaining a sound banking system in this state. The assets shall be maintained as cash on hand; as cash on demand deposit with other banks, including the total amount of any reserves deposited with other banks, including the total amount of any reserves deposited at a federal reserve bank; as cash items in process of collection; as earning assets such as federal funds sold, bonds, notes, debentures, drafts, bills of exchange, acceptances, loan participation certificates, or other evidences of indebtedness payable in the United States or in the United States funds or, with the prior approval of the Board, in funds freely convertible into United States funds; in such other form as the Board may specify by rule; or as any combination of the foregoing. The term "assets" as used in this subsection excludes accrued income and amounts due from other offices or branches of, and wholly owned (except for a nominal number of directors' shares) subsidiaries of, the international banking corporation in question. The term "liabilities" as used in this subsection excludes accrued expenses and amounts due and other liabilities to branches, offices, agencies, and wholly owned (except for a nominal number of directors' shares) subsidiaries of the international banking corporation in question, and such other liabilities as the Board may specify by rule. In lieu of holding such assets, the Board may by rule permit an international bank agency to:
1. Maintain on deposit with a bank in this state, in such amounts as the Board specifies, dollar deposits or investment securities of the type that may be held by a state bank for its own account pursuant to Section 806 of Title 6 of the Oklahoma Statutes. The aggregate amount of dollar deposits and investment securities for an international bank agency shall, at a minimum, equal the greater of:
(a) One Million Five Hundred Thousand Dollars
($1,500,000.00), or
(b) Five percent (5%) of the total liabilities of the
international bank agency, excluding accrued expenses
and amounts due and other liabilities to branches,
offices, agencies, and wholly owned (except for a
nominal number of directors' shares) subsidiaries of
the international banking corporation of which the
agency is part. The Board shall prescribe by rule the
deposit, safekeeping, pledge, withdrawal,
recordkeeping, and other arrangements for funds and
securities maintained under the provisions of this
paragraph. The deposits and securities used to satisfy
the capital equivalency requirements of this paragraph
shall be held, to the extent feasible, in a state or
national bank located in this state or in a federal
reserve bank; or
Laws 1992, c. 295, § 18, eff. July 1, 1992.