OK. I did miss that little piece of instruction. If the form calls for the EIN, use it on the Form 110. My bad, as they say.
As for my suggestion on splitting up the business and personal accounts by using the EIN on the business accounts, I recognize that that advice runs counter to the suggestion that the IRS prefers that you use the SSN (and the SSN is certainly required for CIP compliance). However, the IRS does allow you to use the EIN for reporting purposes, and this is a place I recommend you do so if it's needed to make your aggregation process work.
Balance that, however, with the knowledge that you'll need to bundle business and personal accounts together if you're responding to a "legal" such as a tax levy or subpoena.
Banking, like life, ain't easy.
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John S. Burnett
BankersOnline.com
Fighting for Compliance since 1976
Bankers' Threads User #8