3A national bank's main office is the place identified in the bank's original organization certificate under 12 U.S.C. 22 or the subsequent location to which the main office has been changed under this §5.40, 12 U.S.C. 30(b) , or other applicable law, as reflected in the national bank's amended articles of association. A Federal savings association's home office is the office identified as such in the savings association's original charter or the subsequent location to which the home office has been changed under this §5.40, or other applicable law, as reflected in the savings association's amended charter. These terms are functionally the same but are used in our regulations in order to be consistent with the relevant statutes that govern national banks and Federal savings associations, respectively.
12 C.F.R. §5.40