Banks must assess their exposure to significant funding providers (or depositors) on an ongoing basis. For this purpose, banks must have in place, as part of their MIS, regular reports on the funding received from significant funding providers to facilitate monitoring. Such reports must consolidate all funding that a bank obtains from each significant funding provider (including a group of related funding providers which, when aggregated, amount to a significant funding provider). The historical amount of funds provided by these funding providers, e.g. in terms of the maximum, minimum and average balances over the previous 12 months, must also be monitored. Trigger ratios must be established to identify any funding concentration for management review. In the case of a retail bank, a funding concentration may exist if a significant percentage of its total deposit base is from a limited number of the top-ranking depositors or a single depositor (or group of related depositors). Banks must consider appropriate actions to diversify the deposit base.