Contact
Corrections are welcome and usually get fixed quickly.
Reporting a fee change
If a platform has changed its fee schedule and a calculator is out of date, include the platform name, the fee that changed, and a link to the official fee page. That is enough to make the correction.
Partnerships and affiliate enquiries
SellerFeeTools accepts affiliate relationships with tools and platforms relevant to online sellers. Enquiries should include the program name, current commission terms, and the cookie duration.
Response time
Most messages are answered within two business days.
What is useful to include
For a fee correction, the platform, the specific fee that changed, and a link to the official fee page. For a partnership enquiry, the program name, the commission structure and the cookie duration. For anything else, a sentence about what you are trying to work out is enough.
If you are reporting a calculator that gives a wrong answer, include the numbers you entered and the result you expected. That is usually enough to reproduce and fix it the same day.
What this site does not do
It does not offer tax advice, legal advice or accountancy services. Fee calculations are a modelling tool for pricing decisions, not a substitute for a statement from the platform or a professional opinion on your obligations.
Write to changhaodai188@gmail.com. That address reaches the person who maintains the calculators, not a ticket queue.
For a fee correction, the fastest route is to include the platform, the figure that changed and a link to the official fee page. Corrections are usually live the same day.