Not monitoring your royalties payable can place a publisher in a cash flow predicament when it comes time to pay royalties.
When I as the CFO of Brunner/Mazel Inc. (a professional of medical texts) I set up an interest earning bank account for royalties payable. Each month we would deposit the amount required to cover the prior month’s royalty expense. In March when it was time to pay royalties for the prior year the money was available, and the authors were paid on-time. In fact, we paid the authors early.