Core formulas
The formulas to keep straight
break-even units = fixed event cost / profit per itemprofit per item = average price - product cost - card feetarget units = (fixed event cost + target profit) / profit per iteminventory to bring = target units / expected sell-through rateHow does a craft fair break-even calculator work?
A craft fair break-even calculator adds the fixed event costs, then divides that total by profit per item. Profit per item is the selling price minus product cost and payment fee.
Use average selling price if the table has several products. A table with $12 stickers, $35 candles, and $80 gift boxes needs one blended average order value, not three separate hopes.
The calculator example was checked July 3, 2026.
Craft fair calculator fields, checked July 3, 2026
| Field | Example | What it controls |
|---|---|---|
| Booth fee | $75 | Fixed event cost |
| Display cost | $25 | Reusable setup cost to recover |
| Travel and parking | $20 | Trip cost |
| Average selling price | $35 | Revenue per unit |
| Product cost | $14 | Unit cost before event cost |
| Card fee | 2.6% + $0.15 | Payment cost per sale |
| Target profit | $200 | Profit goal after event costs |
What is the difference between break-even and target profit?
Break-even means the booth paid for itself. Target profit means the event paid for itself and left a useful return for the day.
In the example, 7 sales only recover the $130 event cost. The seller needs 17 sales to leave $200 profit after event costs.
Use target profit when deciding whether to book the event. Use break-even when deciding how quickly the booth should recover its cost.
Break-even vs target-profit units, checked July 3, 2026
| Goal | Formula | Units |
|---|---|---|
| Break even | $130 / $19.94 | 7 |
| $100 profit | ($130 + $100) / $19.94 | 12 |
| $200 profit | ($130 + $200) / $19.94 | 17 |
| $400 profit | ($130 + $400) / $19.94 | 27 |
How should sell-through change craft fair inventory?
Sell-through matters because a booth rarely sells one perfect set of units. If the target is 17 sales and you expect to sell 70% of what you bring, bring at least 25 units.
That does not mean every unit should be identical. It means the table should have enough profitable inventory to hit the target even when buyers choose unevenly.
For first events, use a conservative sell-through estimate and bring fewer fragile experiments.
Inventory from sell-through, checked July 3, 2026
Target is 17 sales.
| Expected sell-through | Inventory to bring | Use when |
|---|---|---|
| 50% | 34 units | Unproven event or weak fit |
| 60% | 29 units | First event with some demand |
| 70% | 25 units | Reasonable local market target |
| 80% | 22 units | Strong repeat event |
Decision table
Craft fair calculator decision table, checked July 3, 2026
| Calculator result | What it means | Next move |
|---|---|---|
| Break-even under 10 units | The booth can recover cost early | Check inventory and average order value |
| Break-even over 30 units | The booth is risky | Raise price, bundle, or skip the event |
| Target units near total inventory | No room for uneven demand | Bring more inventory or lower target |
| Expected profit below target | Event may not be worth the day | Compare with online sales or another fair |
Worked examples
Examples you can compare against your own numbers
Example: target-profit booth plan
This event has $130 fixed cost and $19.94 profit per sale after product cost and card fee.
| Break-even sales | 7 | Recover event cost |
|---|---|---|
| Target-profit sales | 17 | Recover event cost plus $200 profit |
| Inventory at 70% sell-through | 25 units | 17 / 70%, rounded up |
Takeaway: The seller should not bring 17 units. They should bring enough inventory for 17 sales to be realistic.
Open this booth plan in the calculatorAction checklist
Before you use this number in the real business
- 1Enter all fixed event costs.
- 2Use average selling price, not the highest product price.
- 3Enter product cost with labor and packaging included.
- 4Use your actual card-present fee.
- 5Set a target profit before judging the event.
- 6Convert target units into inventory using sell-through.
Common mistakes
Mistakes that make the answer look better than reality
FAQs
Questions people ask before making the decision
What is a craft fair break-even calculator?
It is a calculator that shows how many items must sell to cover booth fee, display cost, travel, product cost, and card fees.
What numbers do I need for craft fair break-even?
You need fixed event cost, average selling price, product cost per unit, payment fee, expected units sold, and target profit.
Should booth fees be split across products?
For planning, split booth fees across expected sales. For pricing, use the split only to check whether the event can work.
What if the calculator says I need too many sales?
Raise average order value, reduce event costs, improve product margin, or skip the fair. Do not hope weak math becomes good traffic.
Can I use this for farmers markets?
Yes, if you enter the market fee, average sale, product cost, payment fee, and target profit for that event.
Does the calculator include sales tax?
No. Add tax costs or compliance costs to other event cost if they affect your profit.
Sources and notes
Where the assumptions come from
Calculator used for booth break-even, target-profit, card-fee, and inventory examples.
Official Square US source for card-present, online, and manually keyed processing fees.
General cost, fee, margin, and market-check method used in these craft fair guides.
How FeeProofed checks formulas, examples, source notes, and calculator-backed guide content.