MCC's Department of Administration and Finance and the Chief Financial Officer provide Millennium Challenge Accounts with written guidance on developing grant accrual estimates to ensure validity of the grant accruals estimate. The guidance should include, but not be limited to, the following: 1) Take into consideration the impact of contract advances and retentions for large works contracts in the accrual estimate. 2) Ensure that accrual estimates do not include costs that will not be paid with compact funds. 3) Consider historical questioned costs for contracts and grants that are significant in developing the accrual estimate.