Launch an E-Commerce Store with the World’s Highest Converting Checkout
Subscription Box Unit Economics & Churn Profit Calculator
Analyze unit economics, landed COGS, platform marketplace fees, packaging, and break-even ROAS for subscription box profit.
Landed cost: $23.50
Markup on cost: 15.1%
Minimum ad multiplier needed
2.9% + $0.30 Shopify Payments with own 3PL fulfillment
Monthly Scale Projections
Projected net earnings based on your current unit economics
Launch an E-Commerce Store with the World’s Highest Converting Checkout
Built-in Shopify Payments, automated inventory sync, and multi-channel TikTok/Instagram integration.
E-Commerce Unit Economics & Break-Even ROAS Algebra
How to accurately compute true landed costs, platform referral commissions, and maximum allowable CAC
Break-Even ROAS represents the exact advertising return required for a product sale to generate zero net profit or loss:
If a product sells for $50 and landed COGS + marketplace fees total $25, your gross contribution is $25, meaning your target ROAS must exceed 2.00x to achieve positive cash flow.
Conflating margin and markup is the #1 reason e-commerce brands misprice products and run out of working capital:
- Net Margin %:
(Net Profit / Selling Price) × 100. Margin can never exceed 100%. - Markup %:
(Net Profit / Total Cost) × 100. A product costing $20 and sold for $60 has a 200% markup and a 66.7% margin.
Featured B2B Solutions & Partner Offers
Curated business utilities verified for US & UK operations, payment optimization, and tax compliance.
Launch High-Converting E-Commerce Stores
The world's highest-converting checkout. Built-in payments, abandoned cart recovery, and global multi-channel inventory sync.
- Industry-leading 4-second mobile checkout
- Built-in Shopify Payments (zero extra fee)
- Direct TikTok & Instagram sales sync
Eliminate Stripe 3% Cross-Border Fees
Get local US routing, UK sort code, and EUR IBAN. Receive client payments like a local business with true mid-market rates.
- Multi-currency account (40+ currencies)
- Direct batch contractor payouts
- Integrates with QuickBooks & Xero
Automate Multi-State Economic Nexus
Track sales tax liability across California, Texas, New York, and all 50 states with automated return filing and certified accuracy.
- Real-time address-level tax rates
- Automated AutoFile returns to states
- Exemption certificate management
Editorial Independence: FeeKit may receive compensation from partner links at no additional cost to you. All mathematical calculations remain 100% client-side and uninfluenced.
SPONSORED • FTC COMPLIANTTechnical Breakdown & Formula Specifications
Transparent mathematical reference and standardized volume benchmarks
Mathematical Formula & Calculation Logic
Net profit is computed by subtracting all landed product expenses, marketplace referral commission (e.g. 15% Amazon or 6.5% Etsy), fulfillment pick-and-pack, and ad spend (CAC). Break-even ROAS represents the minimum ad return required to avoid losing money.
Standard Transaction Volume Tiers
Compare expected deductions across typical commercial ticket sizes
| Gross Transaction | Deductions | Net Received | Effective Rate |
|---|---|---|---|
| $100.00 | -$0.00 | $0.00 | 0.00% |
| $500.00 | -$0.00 | $0.00 | 0.00% |
| $1,000.00 | -$0.00 | $0.00 | 0.00% |
| $5,000.00 | -$0.00 | $0.00 | 0.00% |
Subscription Box Unit Economics & Churn Profit — Frequently Asked Questions
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