1. There's nothing regulatory on frequency of board reporting. This should be a parameter set by the board in policy. There might also be a requirement to bring certain types of (serious) complaints to the board's (or management's) attention at the earliest opportunity notwithstanding the normal policy schedule for reporting.
2. Regulators will be more focused on complaints from consumers, but complaints from businesses are no less important to your bank's reputation and smooth sailing. I see a place for complaints of a "business nature" in your reporting scheme.
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John S. Burnett
BankersOnline.com
Fighting for Compliance since 1976
Bankers' Threads User #8