We note that the size of individual payments from the petty cash fund is not formally limited. Staff may therefore sometimes use the petty cash fund unnecessarily, in order to avoid the restrictions of the cheque disbursement process. The average total of petty cash payments was approximately Baht ---- per month during the year under review. As all cash transactions contain inherent risks, and the reason for any losses is difficult to either trace or prove, a good internal control system will try to limit, as far as practical, the number and size of cash transactions.