Are the procedures for opening letters of credit performed by the accountant permissible if the bank deducts fees for opening them, and upon the submission of each invoice, it then pays the supplier, and then the bank finances this invoice as a loan? And is his work permissible in issuing letters of guarantee for which the bank deducts issuance and amendment fees, especially with a banking facility agreement in place under which an annual sum is deducted regardless of the extent of the facility's utilization? What is the ruling if he cannot move to another job? And is it permissible for him to take out a sum of money equal to the time spent on processing the letter of credit or letter of guarantee?

Documentary credits and letters of guarantee: some are permissible, and some are forbidden. It is permissible for the institution to take actual expenses for issuing documentary credits and a fee for the required services, provided that the duration of the credit does not affect the estimation of the fee, and that the guarantee aspect is not taken into consideration when estimating the fee, and that no usurious interest results from it. As for a letter of guarantee, it is not permissible to take a fee for it in exchange for the mere guarantee. However, it is permissible to charge the applicant for the letter administrative expenses and service fees, provided that the amount does not exceed the customary fee. It is not permissible to issue it for obtaining a usurious loan or for a prohibited transaction. If the bank takes actual expenses without any increase, then there is no harm in that, and your work in recording transactions is permissible. Otherwise, it is not permissible for you to work.