Good question.

Not many questions need to be asked when it comes to accounting. Accountants really need two things: access to your accounting software for the general ledger, and access to copies of your bank statements.

They can figure out almost everything they need to with those two pieces of information.

In terms of keeping things proprietary, there's not much we withhold. They obviously need to know all the numbers to be able to work with you, and it can be helpful to keep them apprised of strategic plans, so they can advise on cash flow if they know it may be tight in the future.