All expenditures have to be signed off by two authorized signers from the group that is spending funds. The AS Administration Office checks the authorized signers, makes sure there are funds in the account and that the expenditures have been approved. All expenditures must also be in compliance with AS and University policies.
In addition to this, AS goes through an annual audit from an outside accounting firm. This audit includes expenditure and revenue testing as well as a review of accounting processes.
To view past years expenditures, you can visit https://budget.as.ucsb.edu/