Accounts Payable Manager

The accounts payable manager is responsible for the performance, accuracy, and controls of the AP function as a whole. Unlike the AP officer who focuses on processing individual invoices, the AP manager is accountable for the process that generates those transactions: the approval workflows, vendor master controls, payment run procedures, and the metrics that measure whether the AP function is performing effectively. In larger organisations, the AP manager leads a team of AP officers; in smaller businesses, the AP manager may also process invoices directly alongside managing the function.

The AP manager's responsibilities cover several distinct areas. Operationally, they ensure that invoices are processed within cycle time targets, that approval workflows are correctly configured and followed, and that payment runs are executed accurately and on schedule. From a controls perspective, they are responsible for ensuring that segregation of duties is maintained, vendor master changes are authorised, and that AP processes comply with the business's internal control requirements. From a reporting perspective, they produce or oversee AP metrics including DPO, cost per invoice, on-time payment rate, and exception rate, and report on these to the financial controller or CFO.

Supplier relationship and vendor master oversight

The AP manager owns the vendor master file -- the database of approved suppliers. Adding new suppliers, changing banking details, and deactivating suppliers are all changes that should require the AP manager's authorisation (or a formal dual-authorisation process) to prevent ghost vendor creation and bank account change fraud. The AP manager should also manage the escalation process for supplier payment disputes, working with the procurement team and operational managers to resolve discrepancies without damaging ongoing supplier relationships.

AP manager vs financial controller

The AP manager and the financial controller (or finance manager) have a reporting relationship where the AP manager focuses on transactional processing and operational controls, and the financial controller focuses on financial reporting accuracy, compliance, and strategic financial management. The AP manager escalates exceptions, unusual transactions, and control failures to the financial controller. The financial controller relies on the AP manager's process discipline to ensure that the AP data flowing into financial statements is accurate and complete. In many mid-market businesses, there is no dedicated AP manager -- the financial controller or bookkeeper performs both functions, with the AP officer reporting directly to them.