Can the AI tool reason through GAAP adjustments on its own, such as capitalizing a lease expense to a balance sheet asset and liability?

Confirmed yes. A live demo was shown where a user typed that they bought a vehicle for $50k in September and needed to depreciate it. The assistant responded by creating the necessary chart of accounts (asset account and depreciation expense account), proposing a five-year straight-line depreciation schedule as typical for vehicles, and asking for confirmation before posting the journal entries — illustrating that the tool can reason through and propose GAAP-consistent treatment automatically, based on configured rules, before posting.