John W. Rigdon reports that Sidney Rigdon disagreed with Joseph's decision to start the Kirtland Bank without a charter, but Joseph convinced him otherwise.
John Wickliffe Rigdon, "'I Never Knew a Time when I Did Not Know Joseph Smith': A Son's Record of the Life and Testimony of Sidney Rigdon," repr., Dialouge: A Journal of Mormon Thought 1, no. 4 (Winter 1966): 27–28
. . . Joseph Smith and Sidney Rigdon were forced to leave Kirtland on account of their starting of the Kirtland Bank. My father opposed it. He said it would not be legal as they had no charter. He did not wish to have anything to do with it, but Joseph Smith thought differently and persuaded Father to sign bills as president and Joseph signed them as cashier. They gave their notes for the bills; the bills came back to the bank faster than silver could be gotten to redeem them with. And the bank went down.