Ask what an event costs and you get a total. Ask where it went and the biggest single answer is nearly always the same: food. Earlier this week we looked at how many registered guests do not come. This is the other half of that problem, because the biggest line in the budget is the one paid per head.
Where the money goes
Published category breakdowns are rare, and many of the percentages online have no visible source. The most transparent recent set we found comes from GoGather, a US corporate event management company, from its own 2025 conference data. The average conference ran on a budget of about $1.62 million for 606 attendees, about $2,731 per attendee.1
Two things to notice. Those five categories add up to about 70%, so nearly a third of the budget sits in lines the benchmark does not itemise. And there is no separate venue line: at hotel conferences room hire is often folded into a food-and-beverage minimum, so check how your own venue quotes before comparing.
These are large US corporate conferences, so the dollar amounts will not transfer to a Bengaluru product launch or a Chennai medical symposium. The shares are the useful part: catering first at about a third, audio-visual second at 19%, and nothing else itemised above 11%.
Four ways a cost behaves
Grouping lines by category tells you where money went. Grouping them by behaviour tells you what you can still change.
The number worth getting right
Because catering is the largest line and it is paid per head, the single most valuable number in the budget is the guarantee you give the caterer. Set it at your registration count and you pay for every no-show.
Check-in data across more than 1,070 events put the median no-show rate at about 17% for paid events and 28% for free ones, and the planning guidance that came with it was to budget for about 80% and 70% of registrations respectively.2
An illustration: a free event with 400 registrations, at that 28% median, sees about 112 people not arrive. At a hypothetical ₹2,500 per plate, guaranteeing all 400 spends ₹2,80,000 on empty places. Planning at 70%, as the guidance suggests, means 280 plates against about 288 expected guests: close enough that the conversation is about how much margin you want, not about 112 empty places. Your own check-in history is a better basis than the median, and it costs nothing if you are already recording check-ins per person.
Read the contract alongside the number. In the Northstar Meetings Group and Cvent PULSE survey, 50% of planners reported less flexible contract terms,3 and attrition clauses are where a guarantee set too high or too low turns into a bill.
The lines that are usually missing
Contingency. A line for the unplanned, agreed before the event, so the overspend has somewhere to go other than a difficult conversation afterwards.
Per-ticket fees. If your platform takes a percentage, model it at your best-case sales, not your expected sales. We compared pricing models in what event registration software costs.
Badges and on-site changes. Reprints, late registrations, name corrections. We costed this in on-site badge printing.
Attrition. If attendance falls well below the number you contracted, many venue contracts charge for the difference. Budget the downside of the guarantee as well as the guarantee itself, and know the date after which the number can no longer be reduced.
Staff time. If two people spend a week reconciling spreadsheets, that is a cost even if it never appears on an invoice.
When the line items barely matter
If you are buying a hotel's all-inclusive day package priced per delegate, most of the budget is one number from one supplier. Detailed line-item work adds little; your leverage is the delegate count you commit to and the attrition terms around it. Spend the time there.
For a small internal event with a fixed venue and an in-house team, a simple total with a contingency line is enough. The breakdown above earns its keep on events large enough that a 10% error in the guarantee is real money.
Where Aurentex sits
Aurentex is a fixed line in this budget: a setup fee and a flat monthly fee, published on our pricing page, plus applicable taxes, with 0% of ticket sales and no attendee caps. It does not grow when an event sells well.
More usefully for this article, registration and check-in sit in the same record, so every event leaves you with its real attendance against registrations. That is the number to set next year's catering guarantee from. Your first event is free.
Common questions
What share of an event budget goes on food and beverage?
About a third at a conference: 32.5% in GoGather's 2025 data, ahead of AV at 19%.1
How much does a conference cost per attendee?
About $2,731 in GoGather's US data, of which about $867 was food and beverage.1 Use the shares, not the dollars, outside the US.
How many should I guarantee to the caterer?
Expected attendance: about 80% of registrations for paid events and 70% for free ones as a starting point.2
What is usually missing from an event budget?
Contingency, per-ticket fees, badge reprints and on-site changes, and staff time.