The budget lines committees forget

A budget is not a price list. It is a description of the event in money. When a committee approves a budget, it approves a set of assumptions about how the day will work. The danger is not the big lines that everyone discusses. It is the small lines that nobody owns until the invoice arrives.

The notes below are not a complete budget. They are the lines that are most often missing from the first draft, and the questions that help decide whether they belong in yours.

Build from the programme

Start with the run of show, then cost it. A session that needs a second room, a speaker who needs a green room, a workshop that needs printed materials and a reception that needs a separate entrance all create costs that a venue quote will not show. If the programme is still vague, the budget will be vague in the same places.

Cvent and Eventbrite both publish practical material on event budgets, and the same warning appears: the venue and catering lines are easy to compare, while production and people costs are where the estimate usually fails.

Production and crew

• Build and breakdown: the hours before and after the event, including the crew who work them.
• Power and connectivity: what the venue provides, what the production team needs and who pays for the difference.
• Rigging and access: specialist labour, permits and equipment that cannot be assumed from the room plan.
• Signage: design, print and the people who place it before the doors open.
• Storage: secure space for materials, cases and equipment during the event.

People and access

The programme depends on people who are not always in the room. Speaker travel, accommodation, fees and the time of the chair are real costs. So are the staff who manage registration, the hosts who guide guests and the technicians who stay beyond the final session.

Access should be budgeted, not borrowed from goodwill. If the event needs interpretation, captioning, accessible transport, a quiet room or adjusted materials, those requirements belong in the first draft. W3C Web Accessibility Initiative publishes guidance that helps turn an accessibility intention into a practical list.

Do not forget the cost of the team's own time. A programme that is delivered on volunteer hours still has a cost, even if it never appears on an invoice.

Keep unknowns visible

Every first budget has open questions. The mistake is to hide them under a single contingency line. Instead, list the unknowns next to the estimate they affect and name the person who will close them. A short register is enough: the item, the estimate, the owner and the date by which it will be confirmed.

A contingency is a decision about risk, not a place to put the things nobody has priced.

IAEE and UFI publish material on exhibition costs that is useful even for non exhibition events, because it separates the floor, the build and the services that surround them. The principle applies to any format: cost the work, not only the room.

Present it honestly

A committee can make a good decision with an honest budget and a poor one with a polished guess. Present three groups: committed, probable and open. Say what would change if the open items close higher than expected. Say which parts of the programme are protected and which can flex.

The budget should be revisited when the programme changes. A budget approved in one shape and spent in another is not a control document; it is a record of what happened.

For the planning sequence around the budget, see the budget phase. For the room costs that follow a layout decision, see the room setup note.