Check the account agreement that covers your interest-bearing checking accounts for businesses. Look for any vestigial mentions of the right to require 7 days' notice of withdrawal (which should have been there for the NOW accounts for sole proprietors and non-profits). Get rid of those mentions because they aren't permitted for a demand deposit account.
If the bank unilaterally changed accounts from DDA to DDA with interest, the bank should have provided a disclosure under FDIC regulations at §330.16(c)(3). The notice isn't required if a customer request initiated the change. I recommend, though, that to reduce the potential for misunderstandings, you give the notice anyhow.
If the change is from NOW account to DDA with interest, though, there's no change in deposit insurance coverage, so no need for the notice.
Last edited by John Burnett; 09/18/12 07:18 PM. Reason: correction
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John S. Burnett
BankersOnline.com
Fighting for Compliance since 1976
Bankers' Threads User #8