Statements as financial vouchers are bound and kept separately in many companies. Bound by the month, if the balance is not even should do a balance reconciliation statement. Of course, there are individual companies to statements and invoices posted together as original documents, but I personally do not recommend doing so.

Secondly, you mentioned depreciation of fixed assets, amortization and utilities, these accounts are not invoiced as an attachment, so what is the basis? The basis is the book building accountant's request form! Many companies do not keep this thing, but the book should be submitted to the relevant depreciation method submitted to the CFO for signature (at least submitted to the CFO and above leadership). So this item, there is no need for attachments.