There is nothing wrong with you selling back to the seller the dates that he owes you in return for Dinars, on condition that it is at the current market price. There is also nothing wrong with delaying payment in full or in part, because when selling the dates for Dinars, there is no stipulation that the exchange should take place on the spot, before parting.

It is not permissible for the lender to stipulate in a loan contract that the borrower must pay back the loan with more than he took. It is permissible to make the borrower pay the costs of issuing the loan and other related services, on condition that the amount paid is equal to the real costs involved in issuing the loan.

Alternatives for Islamic Banks to avoid late-payment charges include: 1- the bank appointing someone as a guarantor; 2- the bank taking something in mortgage; 3- the bank stipulating that the customer should open an account in the bank; and 4- the bank putting the customer on a blacklist.