Or. Admin. Code § 309-013-0200
A service provider subject to audit under these rules shall maintain a chart of accounts that defines all items included in determining the cost for each service element. The chart of accounts shall list all revenues and expense accounts. The organization shall have bank deposit records and documentation to verify the source of revenue. Revenue and expense accounts, with related asset, liability, and equity accounts, shall account for all expenditures related to delivery of the service. All basic accounting records shall be retained for at least three years following the expiration of the contract or from the finalization of an audit including any appeal, whichever is later.
Or. Admin. Code § 309-013-0200
Stat. Auth.: ORS 179.040 & 413.042 & 430.640
Stats. Implemented: ORS 414.018 & 430.610-430.695