How To Write A Bank Loan Application Letter . Dear lender’s name, the aim of this letter is to request a small business loan of $50,000 to improve and upgrade my restaurant. Subject, request for personal loan. 17+ Sample Loan Application Letters PDF, DOC Free & Premium Templates from www.template.net Your personal loan request letter is the first document the lender will see when applying for a loan. Address of bank or lending institution. Subject, request for personal loan.