A multinational manufacturer I studied had a clear procurement policy: all purchases above $5,000 required three competitive bids routed through the procurement team. The policy was well-documented, approved by the CFO, and communicated at every quarterly all-hands. Compliance rate: 41%. Nearly six out of every ten purchases above the threshold bypassed the policy entirely. The goods were legitimate. The need was real. The stakeholders were not malicious. They were just faster than procurement.
Maverick spend — the purchase of legitimate goods and services using unauthorized buying channels or unapproved suppliers — is the single largest source of procurement value leakage in most organizations. Ardent Partners research finds only 63-71% of enterprise spend sits under active procurement management, leaving 29-37% effectively unmanaged. Off-contract purchases cost 12-18% more per dollar than compliant buys. The Hackett Group estimates organizations lose 5-16% of negotiated savings to maverick buying.
How maverick spend typically unfolds
The pattern repeats across industries with almost no variation. It follows four stages, and most organizations only notice by stage three.
CIPS-cited research finds that maverick buying can account for up to 80% of all invoices in large organizations — not 80% of spend, but 80% of the transaction volume hitting accounts payable. The procurement team is processing a mountain of invoices it never influenced.
The real root causes: it is not defiance, it is friction
Most procurement leaders frame maverick spend as a compliance problem. The language gives it away: "rogue buying," "non-compliant purchasing," "stakeholders going around the process." This framing assumes stakeholders know the policy and choose to ignore it. Research consistently contradicts this assumption.
Hackett Group analysis identifies the top cause of maverick spend as overly complex, slow procure-to-pay workflows. Approximately 75% of procurement professionals cite lack of self-service or guided buying tools as a primary driver. The second most cited cause: decentralized procurement models where roles and accountability are unclear — stakeholders do not know who can buy, who can approve, or who can negotiate, so they default to whoever answers the phone first.
Technology gaps compound the problem. When there is no unified spend visibility — data spread across ERP, purchasing cards, expense reports, and AP inboxes — procurement cannot even see the maverick spend it is supposed to control. Gartner has flagged this as the "visibility paradox": the spend most likely to be off-contract is the spend least likely to appear in procurement's reporting systems.
Early warning signals most teams miss
Maverick spend does not appear suddenly. It leaves traces long before it becomes a line item on a CFO's risk report. The signals are visible if you know where to look.
- Rising purchasing card volume in categories where contracts exist — stakeholders found a faster checkout lane
- New suppliers appearing in AP with no corresponding sourcing event — someone onboarded a vendor outside the process
- Contract utilization rates below 60% in categories with active agreements — the contracts exist but nobody uses them
- Stakeholder complaints about procurement cycle time — each complaint is a leading indicator of pending workarounds
- Expense report line items that match contracted categories — employees are buying the same thing procurement negotiated, just not through the contract
What stops maverick spend: three changes that work
Adding more approval gates, sending compliance reminder emails, and threatening audit consequences. Each additional step makes the official path slower, pushing more spend outside.
Making the compliant path the fastest path. Guided buying catalogs, pre-approved supplier punchouts, and one-click requisitions reduce cycle time from weeks to hours.
Top-performing procurement organizations push contract compliance above 90% by redesigning the buying experience around speed, not by tightening enforcement. They invest in self-service catalogs where stakeholders can find approved suppliers, see negotiated pricing, and place orders without submitting a requisition form. The governance is embedded in the catalog, not in the approval chain.
A second change: real-time spend visibility. Organizations that connect purchasing card data, expense reports, and AP feeds into a single spend analytics platform can detect maverick patterns within days of the first off-contract purchase, not months later in a quarterly review. Early detection means early intervention — a conversation with a stakeholder, not a disciplinary process.
The third change is organizational: clear category ownership with named buyers responsible for stakeholder engagement in each category. When a marketing director knows exactly which procurement person handles marketing spend, and that person responds within four hours, the incentive to bypass procurement collapses. Hackett data shows organizations with dedicated category-aligned procurement business partners see 30-40% lower maverick spend than those with centralized intake desks.
What this means in practice
Audit your contract utilization rates. If a category has a negotiated agreement but less than 70% of spend flows through it, your controls are failing — not your stakeholders. Measure procurement cycle time from request to PO issuance. If it exceeds three days for non-strategic categories, your process is creating maverick spend faster than compliance training can prevent it.
Run a purchasing card analysis. Filter transactions in categories where contracts exist. The volume of P-card spend in contracted categories is your maverick spend floor — the minimum amount of leakage happening right now. Set a target to reduce it by half within six months, not through policy enforcement but through process speed improvements.
Finally, stop measuring maverick spend as a compliance metric and start measuring it as a procurement experience metric. Every dollar of maverick spend is a stakeholder vote that says "your process is too slow." Listen to the vote. Fix the process. The spend will follow.
What is the difference between maverick spend and fraud?
Maverick spend involves legitimate, needed goods bought through unauthorized channels. Fraud involves illegitimate purchases — goods that were never received, inflated invoices, or personal expenses disguised as business purchases. Maverick spend is a process problem. Fraud is a conduct problem. Treating maverick spend as misconduct alienates the stakeholders whose cooperation you need to fix the process.
Which categories have the highest maverick spend rates?
Indirect categories consistently show the highest maverick rates: marketing services, IT software and SaaS subscriptions, facilities maintenance, professional services, and travel. These categories share three traits: fragmented stakeholder ownership, low individual transaction values, and procurement processes that feel disproportionate to the purchase size.
Can procurement technology alone fix maverick spend?
Technology is necessary but not sufficient. A guided buying platform without fast procurement response times creates a faster catalog that still leads to a slow approval queue — and the stakeholder workaround persists. Technology must be paired with process redesign (reduce cycle time) and organizational clarity (named category owners who respond quickly).
How fast can an organization reduce maverick spend?
Organizations that target process speed rather than policy enforcement typically see measurable reduction within three to six months. The fastest wins come from fixing the top three categories by off-contract volume: implement a guided buying catalog, assign a named category owner, and set a four-hour response SLA. One multinational manufacturer reduced maverick spend from 41% to 18% in nine months using exactly this approach.
Sources: Ardent Partners, "State of Procurement 2025" (cpobee.com/state-of-procurement); The Hackett Group, "Procurement Key Issues Research 2025" (thehackettgroup.com); CIPS / Supply Management, "Indirect Procurement Research" (cips.org); APQC, "Open Standards Benchmarking: Procurement" (apqc.org). Accessed July 2026.