Decentralised Event Spend Is a Governance Risk — Here's How to Fix It

Ask most CFOs where the travel budget goes, and they can tell you within a rounding error. Ask the same question about the events budget, and the answer gets a lot more vague.

That gap isn't an accident. Travel has spent a decade building policy engines, approval workflows and reporting. Events, in most organisations, are still booked the way they were fifteen years ago - a regional marketing lead here, a business unit admin there, each paying for different suppliers on a personal or company card. Multiply that across a 2,000-person organisation with teams in Sydney, Melbourne and Brisbane, and you don't have one events programme. You have hundreds of small, disconnected ones.

For a long time, that's been filed under "administrative untidiness." It shouldn't be. Decentralised event spend behaves like any other unmanaged spend category - it hides risk, erodes negotiating leverage, and leaves finance unable to say where the money actually went.

First, The Problem

Procurement teams call this maverick spend- purchases made outside approved suppliers, negotiated rates and standard workflows. Events sit squarely inside that number, and arguably worse than most categories, because so much of it never touches procurement at all. A team booking a venue for a client dinner or an offsite is thinking about getting a good room by Thursday, not contract compliance. The booking lands on a card, gets expensed, and disappears into a general ledger line that Finance can't break down by venue, region, or rate.

On top of that, the pressure on event teams is increasing. A 2026 Australian survey of 102 Executive Assistants found the share managing event budgets above $500,000 more than doubled, from 7% in 2019 to 15% in 2025, while 66% now receive less than three months' notice for events under 100 attendees. 

What This Actually Costs

Procurement loses leverage. Every booking made directly with a venue, outside of a negotiated contract, is one that misses volume discounts and preferred rates - and quietly weakens buying power, because the supplier can see how little of the organisation's business is actually flowing through the agreed channel.

The financial impact can be significant. The Hackett Group found organisations can lose up to 16% of negotiated savings through maverick buying, while 63% reported reduced sourcing leverage as a consequence.

Travel and event managers lose visibility. With bookings scattered across dozens of business units and cards, there's no single view of where spend concentrates or which venues are being rebooked at rack rate that could be renegotiated. A Melbourne team might be paying full price for the same venue a Sydney team has a discounted rate on, and nobody would know.

CFOs and COOs carry the exposure. Decentralised booking means vendors are engaged without any check on data privacy, insurance or ESG credentials. Reconciliation happens manually, after the fact, rather than in real time. And when a board or auditor asks what percentage of event spend is on-contract, the honest answer in most organisations is: nobody actually knows.

The administrative cost is measurable too. APQC found that organisations with 2% or more of purchases made through maverick buying incurred $2.58 more in procurement costs per $1,000 of purchases than organisations with less than 1% maverick buying - equivalent to more than $2.5 million a year for an organisation with $1 billion in purchases.

None of this requires bad intent. Most maverick spend isn't wilful - it's people trying to get a job done quickly, without an easy way to do it the compliant way. That points to the real fix: not another policy PDF, but a booking experience good enough that doing things the right way is also the most convenient.

The Fix Isn't More Policy

Most organisations already have an events policy. Few follow it consistently, for the same reason travel policies weren't followed before managed platforms existed - a document on the intranet can't compete with a phone call when someone needs a venue booked by tomorrow. The organisations with the highest compliance don't have the strictest rules; they've made the compliant option the easiest one.

Research supports that approach. The Hackett Group found that 75% of procurement professionals cited a lack of self-service or guided-buying tools as one of the biggest causes of maverick purchasing.

Centralising doesn’t have to strip local teams of autonomy. Every booker, wherever they sit in the business, needs one system to book through, so autonomy and visibility stop being in tension. Done properly, that delivers three things at once:

• Consolidated visibility: Every booking, across every team and territory, flowing into one data set, so finance sees total spend under management rather than the fraction that happened to be coded correctly.
• Preserved leverage: Bookings routed through negotiated rates by default, not by exception, so the discounts procurement fought for actually get used. Organisations with mature managed programmes typically see savings in the region of 20% once spend is properly consolidated.
• Built-in compliance: Vendor vetting and contract terms applied consistently, rather than dependent on whichever team happened to do the due diligence that week.

This is the gap HeadBox for Business is built to close - one platform for every booker to find, compare and book through existing negotiated rates, with every booking flowing into a single dashboard for real-time visibility by team, territory or event type, backed by vetted, ISO 27001-aligned suppliers as standard.

On average, HeadBox achieves 20% cost savings across the entire meetings and events program. From value-adds and complimentary room hire, to thousands saved in supplier and venue contracts.

We leverage our economies of scale to drive further discounts and savings for Travel Managers. In 2025, we saved our corporate clients $6 million globally.

A Practical Starting Point

Decentralised spend isn't a filing problem - it's a governance gap that's easy to overlook because no single booking looks like a big deal on its own. It's only when you add up the missed discounts, the unvetted vendors and the reconciliation hours across a full year that the real cost becomes visible.

1. Audit what's actually off-contract. Even a rough estimate of your maverick spend rate tells you the size of the problem.
2. Centralise the booking, not the control. Give every team one system that applies your negotiated rates automatically, rather than restricting who's allowed to book.
3. Make visibility real-time. Waiting for quarter-end to find out what was spent, and with whom, is the thing to fix first.

Curious what this looks like for your organisation? Get in touch with the HeadBox for Business team.