As stated in Canon 8. Section 4:
The Vestry shall annually cause to be audited or reviewed the accounts of its treasurer and all other custodians of funds or securities. Audits and reviews are to be conducted with such instructions as may be promulgated by the Diocese. A certified copy of each annual audit or review shall be filed with the Diocese.
See the links below beginning with a letter from our diocesan Treasure to see how your parish can comply with ACNA and ADOC canons: