Maverick Spend

Maverick spend (also called rogue spend or off-contract spend) is purchasing that occurs outside approved procurement channels -- purchasing from suppliers not on the preferred supplier list, purchasing without a required purchase order, or purchasing above delegated authority limits without proper approval. It is a procurement discipline problem with AP consequences: the invoice from the unapproved supplier arrives in the AP queue, and the AP team must decide whether to process it (which confirms the purchase) or hold it (which creates a payment dispute with the supplier for work already done).

The financial cost of maverick spend is significant. By definition, maverick purchases are not subject to the negotiated rates available through preferred suppliers or framework contracts. A department that buys marketing materials from a local print shop rather than the contracted print management company pays retail rates instead of negotiated rates -- which might be 20 to 30 percent higher. Multiplied across hundreds of uncontrolled purchases, maverick spend erodes the value of procurement's contract negotiations.

How AP data surfaces maverick spend

AP data is the primary mechanism for identifying maverick spend. Every invoice from a supplier not on the approved supplier list is a potential maverick spend event. Spend analysis that compares actual supplier invoices against the preferred supplier register for each category highlights where spend is leaking to unapproved suppliers. For businesses with ERP systems that include contract management, purchase order matching automatically surfaces maverick spend: an invoice that cannot be matched to a purchase order for an approved supplier fails the PO match and enters an exception queue -- surfacing the maverick purchase for investigation.

The AP team's role in maverick spend management is triage and escalation, not enforcement. When an invoice arrives from an unapproved supplier, the AP team should flag it and route it to the relevant manager and the procurement team, who determine whether the purchase was genuinely necessary and whether it should be retrospectively approved or challenged. Attempting to reject the payment without escalation creates supplier relationship problems; processing the payment without flagging it endorses the maverick purchase without accountability.

Addressing the root cause of maverick spend

Maverick spend most often occurs when the approved procurement process is too slow or difficult. If getting a purchase order approved through the procurement system takes five days and the department manager needs something delivered tomorrow, they will buy it directly and deal with the invoice later. The procurement process is the problem, not the manager. Addressing maverick spend requires fixing the process that makes compliant purchasing slow and painful -- not simply blocking payments to unapproved suppliers. Simplified procurement pathways for low-value, routine purchases, faster PO approval for urgent needs, and clearer guidance on which suppliers are approved for which categories reduce maverick spend more effectively than enforcement alone.