You don't have to do this on commercial accounts.
Section 230.2(a) of Reg. DD defines an account as follows:
(a) Account means a deposit account at a depository institution that is held by or offered to a consumer. It includes time, demand, savings, and negotiable order of withdrawal accounts. For purposes of the advertising requirements in Sec. 230.8 of this part, the term also includes an account at a depository institution that is held by or on behalf of a deposit broker, if any interest in the account is held by or offered to a consumer.
Here's the rule's definition of consumer.
(h) Consumer means a natural person who holds an account primarily for personal, family, or household purposes, or to whom such an account is offered. The term does not include a natural person who holds an account for another in a professional capacity.
You can also look at the corresponding Official Staff Commentary for these items.
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Opinions expressed are my own and not necessarily those of my employer. They are not legal advice.