Private by default · runs locally
Crowdfunding reward margin checker
Find the reward tier that quietly loses money.
Model production, packaging, shipping, fees, refunds and campaign overhead across your actual reward mix—before launch day.
No accountNo uploadEditable ratesFull CSV export
01
Build your reward mix
One row per reward tier. Shipping charged is revenue; shipping cost is your fulfillment expense.
Collected$19,250.00
Variable costs + reserves−$13,548.50
Contribution$5,701.50
Margin29.6%
Collected$16,660.00
Variable costs + reserves−$12,440.12
Contribution$4,219.88
Margin25.3%
03
See where every dollar goes
The calculator never hides deductions inside one “profit” number.
Total collected$35,910.00
Platform fees−$1,795.50
Payment fees−$1,247.12
Refund + contingency reserves−$3,591.00
Production + packaging + shipping−$19,355.00
Contribution before fixed costs$9,921.38
Campaign fixed costs−$12,000.00
Projected net-$2,078.62
Model the mix
Reward tiers can look profitable in isolation while shipping and fixed overhead break the campaign.
Replace assumptions
Use supplier quotes, packaging tests, fulfillment estimates and your platform’s current fee terms.
Keep the evidence
Export the full scenario so collaborators can audit every input instead of debating a hidden formula.
Planning guardrails
Is this an official Kickstarter calculator?
No. BackerMargin is an independent planning tool and is not affiliated with Kickstarter or any crowdfunding platform.
Does it calculate taxes or duties?
No. Tax, VAT, duties, country-specific fees and legal obligations require current professional advice. Add expected amounts into fixed or per-tier costs.
Does the site store my campaign numbers?
No. Scenario inputs and calculations stay in your browser. Only privacy-safe aggregate interaction events may be counted to improve the product.