Methodology

Useful estimates, clearly qualified.

ClearFeeMath turns published platform pricing into comparable planning estimates. We show the assumptions, link to primary sources, and call out costs that do not fit inside a single headline rate.

How the math works

For gross revenue, we apply the selected percentage fee, fixed per-transaction charge, and baseline monthly cost. Reverse pricing solves the same equation backward from a target take-home amount. Every output is rounded for display after the calculation.

What we intentionally exclude

Unless a page says otherwise, estimates exclude sales tax, VAT, income tax, refunds, chargebacks, optional advertising, shipping, custom contracts, currency conversion, bank charges, and negotiated pricing. These costs are real, but combining them without user-specific inputs would create false precision.

Sources and updates

Platform pages link to the pricing page, help center, or policy used as the starting reference. Pricing changes frequently, so the official source and the terms shown inside your account always take precedence.

StripeStripe pricing PayPalPayPal merchant fees GumroadGumroad pricing EtsyEtsy fee basics ShopifyShopify pricing PatreonPatreon pricing FiverrFiverr Help Center UpworkUpwork Help Ko-fiKo-fi fees SubstackSubstack eBayeBay selling fees AmazonAmazon seller pricing SquareSquare online payment pricing Lemon SqueezyLemon Squeezy pricing

Editorial independence

ClearFeeMath is an independent reference site and is not affiliated with the platforms it covers. A future commercial relationship will not change calculator results or ranking methodology and will be disclosed near the relevant recommendation.