Our Mission
MarginPulse was built with a single mission: helping independent e-commerce merchants, digital creators, and freelancers understand their true unit economics. Marketplace fee schedules and payment gateway pricing pages are often buried across dozens of footnotes—making it easy to misprice products or underestimate customer acquisition budgets.
How We Verify Our Calculator Formulas
Every calculator published on MarginPulse is built directly from primary merchant documentation, including:
- TikTok Shop Seller Academy & US Fee Schedule: Referral percentages, refund administration caps, and creator affiliate open/target collaboration rules.
- Etsy Seller Handbook & House Rules: Listing auto-renewals, 6.5% transaction fees on shipping, Etsy Payments processing tiers, and Offsite Ads attribution caps.
- PayPal & Stripe US Merchant Rate Tables: Standard checkout vs. unbranded card processing, cross-border surcharges, and algebraic gross-up reverse billing formulas.
- Shopify Plan Economics: Credit card processing spreads across Basic, Grow, and Advanced tiers alongside Break-Even ROAS formulas.
Editorial Independence
All calculators on MarginPulse are 100% free to use without registration walls. To fund server infrastructure and ongoing formula maintenance, our site is supported by non-intrusive display advertising. Our editorial guides and mathematical models remain strictly independent.