The Bank offers ICS accounts as both operating demand deposit (checking) accounts tied to an interest-bearing sweep or as a standalone money market account with limited transactions. Funds in the ICS are viewable and transferable through online banking. Reporting is available daily online and monthly via statements.
CDARS are structured very much like certificates of deposits. Your large deposit would be broken into smaller amounts and placed as CDs with other banks in the CDARS network, so that your entire investment is eligible for FDIC insurance.
Link your company's master account to subsidiary accounts that hold zero or threshold balances. Individual deposit and disbursement accounts are maintained to facilitate account reconciliation. Funds from the accounts are consolidated nightly to maximize investment opportunities.