Craft Fair Break-Even Inventory Calculator

Method and assumptions

Contribution per item = average selling price − variable cost. Break-even units = ceiling((booth + setup fixed costs) ÷ contribution). The stock-share output divides this unit hurdle by available stock; full-stock result assumes every available unit sells once.

Worked example

A $200 booth and $100 setup cost with $30 sale price and $9 variable cost has $21 contribution per item. The seller needs 15 sales to cover $300 fixed cost. With 40 units available, that is 37.5% of stock; selling all would leave $540 after entered costs.

How to use the result

Use the quantity to set a realistic event target or compare a smaller booth commitment. This does not forecast foot traffic or sell-through and excludes taxes, unpaid labor, travel not entered, and unsold-stock value.

Input meanings and limits

• Booth fee: The event space cost for this selling period.
• Other event setup costs: Entered fixed costs such as display or travel allocation.
• Average selling price per item: Use a blended price if you sell more than one item type.
• Variable cost per item sold: Item cost and per-sale variable expenses you choose to include.
• Saleable inventory available: Units available for this event.

Inputs accept finite, nonnegative values in the displayed ranges; percentages are bounded to 0–100% (with 99.99% maximum where division by the remaining share is used), and whole-unit or month fields require integers. Currency figures are shown in USD for convenience; enter values in one consistent currency. This is a planning worksheet, not financial, legal, tax, or accounting advice.

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Side hustle profit calculator and Marketplace fee price floor calculator.