Below is an example of a budget we borrowed from one of the GSA Sections. This should give you a good idea of what is needed to be included when pulling together your budget.
Most important items to remember.
1. Begin by separating items dependent on:
a) registration fees (GSA Registration Fee, coffee breaks, audio-visual are some obvious ones) from;
b) those that have fees associated with the event (field trips, breakfast, banquet, etc)
2. Use data from previous meetings to get an estimate of how many will attend, and proportions of professionals vs. students, and pre-registrants vs. on-site registrants (each usually with different fees) to estimate income.
3. The attached budget is an example only. Please be sure to budget using your budgeting numbers.