Maintain records. Print and review all bank statements, credit card statements at the end of each month. Review them for accuracy and to determine if all documents are in your possession. "Since many business owners wait until itâ€™s too late or until right at the tax deadline to file their taxes, a lot of them have to go to the bank or try to get statements from months ago," says Robbie Hampton. "So, what I usually recommend, even if you do online banking, at the end of each month, go ahead and print the paper statement."