Formula
Break-even attendance = ceil[(fixed costs − other fixed income) ÷ (revenue per attendee − variable cost per attendee)]
If fixed income already covers fixed costs, break-even attendance is zero.
What the result means
Each attendee contributes revenue minus their variable cost toward the uncovered fixed cost. The rounded-up result is the first whole attendee count at which the projection no longer shows a loss.
Financial note: taxes, refunds, complimentary admissions, payment fees, and uncertain sponsorship can materially change realized break-even.