Small tools with explicit assumptions
SellMath runs locally in your browser, with no accounts, external scripts or calculation API calls. Fee tables, explanatory copy and calculator inputs are generated from one data file.
Verified means the listed rates were checked against the linked official page on the stated date. Other rates are best-known estimates and have no verification date. Verification applies only to the modeled scope; it is not a guarantee of your eventual payout.
Net payout subtracts fees from collected seller revenue. Profit also subtracts product and seller-funded shipping costs. Tax collected for remittance is excluded from revenue. Promotions, subscriptions, tax on fees and unlisted costs are excluded.
Download the fee data (JSON) · Fee changes and verification log