Much like Bennington explained. We have setup a corporate card clearing GL account. When posting Concur batches, we debit the expenses and credit the clearing account. When we pay the bill (which we pay in full each month) we generate an invoice that includes the total charges for all employees at the statement date, put it through AP, and debit the clearing account.

We accrue the expenses that are unsubmitted at the end of the period (reversing entry to debit expense and credit clearing account). There is always a difference in the clearing account because of the timing of the statement date and period end. The clearing account makes it much easier to manage the timing difference because there is no way all expenses will be submitted on time.