How to build an event budget: the key line items

An event budget rarely fails because of the big numbers, but because of the forgotten small items. Calculate in a structured way early and you avoid nasty surprises on event day.

Separate fixed and variable costs

Enter the fixed costs first, such as venue and tech, then the variable per-attendee costs like catering and badges. That way you instantly see how the budget changes with attendee numbers.

The items that are often forgotten

• Shipping and setup of materials
• Staff and helpers on event day
• A buffer for last-minute changes

Plan a buffer

Deliberately plan a buffer. As a rule of thumb, a reserve amount that absorbs short-term extra costs without blowing the overall budget helps.