{
    "name": "Event Break-even Attendance Calculator",
    "url": "https://calculators.geekmidst.com/calculators/event-break-even-attendance-calculator",
    "markdown": "https://calculators.geekmidst.com/calculators/event-break-even-attendance-calculator.md",
    "category": "Food & hospitality",
    "description": "Find how many tickets an event must sell to cover its fixed costs after sponsorship, fees and the cost of each attendee, and the share of capacity that is.",
    "summary": "Each ticket contributes its price, less fees and the cost of serving that attendee. Divide the fixed costs that sponsorship does not cover by that contribution to get the break-even attendance.",
    "also_called": [
        "Event break-even ticket calculator"
    ],
    "applies_to": "Worldwide",
    "last_updated": "2026-10-29",
    "computation": "Results are computed in the visitor’s browser on the HTML page. This API describes the calculator; it does not compute results.",
    "inputs": [
        {
            "name": "fixed_costs",
            "label": "Fixed event costs",
            "type": "number",
            "default": "20000"
        },
        {
            "name": "sponsorship",
            "label": "Sponsorship and other fixed income",
            "type": "number",
            "default": "5000",
            "optional": true
        },
        {
            "name": "price",
            "label": "Average ticket price",
            "type": "number",
            "default": "60"
        },
        {
            "name": "fee_pct",
            "label": "Ticketing and payment fees",
            "type": "number",
            "default": "5",
            "unit": "%",
            "optional": true
        },
        {
            "name": "variable_cost",
            "label": "Cost per attendee",
            "type": "number",
            "default": "22",
            "optional": true
        },
        {
            "name": "capacity",
            "label": "Venue capacity",
            "type": "number",
            "default": "500",
            "unit": "people"
        },
        {
            "name": "currency",
            "label": "Currency",
            "type": "currency",
            "default": "USD"
        }
    ],
    "outputs": [
        {
            "key": "breakeven_attendees",
            "label": "Paying attendees to break even",
            "format": "integer"
        },
        {
            "key": "contribution",
            "label": "Contribution per attendee",
            "format": "currency"
        },
        {
            "key": "breakeven_revenue",
            "label": "Ticket revenue at break-even",
            "format": "currency"
        },
        {
            "key": "capacity_pct",
            "label": "Share of capacity",
            "format": "percent"
        },
        {
            "key": "profit_at_capacity",
            "label": "Profit if sold out",
            "format": "currency"
        }
    ],
    "formula": {
        "text": "Contribution = Price × (1 − Fee%) − Cost per attendee;  Break-even attendees = ⌈(Fixed costs − Sponsorship) ÷ Contribution⌉",
        "variables": {
            "Fixed costs": "costs that do not change with attendance",
            "Sponsorship": "income that does not depend on ticket sales",
            "Contribution": "what each extra attendee adds after fees and their own cost"
        }
    },
    "worked_example": {
        "inputs": {
            "fixed_costs": "20000",
            "sponsorship": "5000",
            "price": "60",
            "fee_pct": "5",
            "variable_cost": "22",
            "capacity": "500",
            "currency": "USD"
        },
        "steps": [
            "Contribution = $60 × 0.95 − $22 = $35.",
            "Costs to cover = $20,000 − $5,000 = $15,000.",
            "15,000 ÷ 35 = 428.6, rounded up to 429 attendees (85.8% of 500).",
            "Sold out: 500 × $35 − $15,000 = $2,500 profit."
        ],
        "result": "The event breaks even at 429 paying attendees, 85.8% of capacity; a sell-out makes $2,500."
    },
    "interpretation": "If break-even needs more than about three-quarters of capacity, the event has little room for a slow sale. Raise the price, cut fixed costs or secure more sponsorship before committing.",
    "assumptions": [
        "All attendees pay the average price; complimentary guests should be added to the cost per attendee or fixed costs."
    ],
    "limitations": [
        "Uses one average price; tiered or early-bird pricing changes the mix over time."
    ],
    "rules": null,
    "faqs": [
        {
            "question": "Why round up?",
            "answer": "You cannot sell part of a ticket, and 428 tickets would leave the event slightly short."
        },
        {
            "question": "Should staff and speakers count?",
            "answer": "Count their costs (in fixed costs or cost per attendee) but not as paying attendees."
        }
    ],
    "sources": [],
    "related": [
        {
            "name": "Event Ticket Revenue Calculator",
            "url": "https://calculators.geekmidst.com/calculators/event-ticket-revenue-calculator"
        },
        {
            "name": "Conference Venue Capacity Calculator",
            "url": "https://calculators.geekmidst.com/calculators/conference-venue-capacity-calculator"
        },
        {
            "name": "Break-even Calculator",
            "url": "https://calculators.geekmidst.com/calculators/break-even-calculator"
        }
    ],
    "disclaimer": null,
    "publisher": "GM¹X CalcVerse"
}