Cash

If you have an accountant posting your general ledger, always have your monthly bank statement for your company checking accounts mailed to your house rather than to the business. When you get the bank statement, open it immediately, review all the signed checks and any charges to the account. The bank statement should be reconciled immediately to ensure that the reconciled balance agrees with the company's records. This goes without saying that this is a control point to make sure that your company Bookkeeper / Accountant / Controller / Chief Financial Officer is not stealing from you...or the company.