Any bank, branch bank, drive-in facility, bank service corporation or other entity by its term subject to this title, is subject to this title, except that the legality of their organization under prior law is not affected by this title. Banks may retain their capital structure. However the director may order any bank to comply with the capitalization requirements of this title or such additional amounts as he deems necessary upon a finding by him that the sound conduct of banking will be jeopardized by the retention of such prior capital structure.
SDCL 51A-1-1