Most registered banks hold settlement accounts at the Reserve Bank, which are used to settle obligations with each other at the end of the day. For example, if a customer makes out a cheque or makes an EFT-POS payment, the money is paid by their bank to the recipient's bank. Many hundreds of thousands of such transactions are made every day. The bank pays interest on settlement account balances, and charges interest on overnight borrowing, at rates related to the OCR. These rates are reviewed from time to time, as is the OCR. The most crucial part of the system is the fact that the Reserve Bank sets no limit on the amount of cash it will borrow or lend at rates related to the OCR.