Opening 'SAMPLE BANK AUTHORIZATION LETTER' (149 KB). Depending on your connection speed, this document may take several minutes to open.In order to make a bank authorization letter, it's important to empower someone with bank relates issues, for example in taking collecting or sign on documents. Start with the first section. Sign the authorization below to release credit information and complete the enclosed form. Then submit it to us with your most recent financial statement. SAMPLE BANK AUTHORIZATION LETTER 3140-FM-BWEW0041 ; 9580, SAMPLE BANK AUTHORIZATION LETTER. DOC 3140-FM-BWEW0041 ; 9582, SAMPLE BANK AUTHORIZATION LETTER. Authority Letter - Free download as Word Doc (. Authority Letter - Free download as Word Doc (.