Estimates, not advice
The calculators give estimates based on published marketplace rates and the figures you enter. They are not tax, legal, accounting or financial advice. Marketplaces change fees, apply them by account type and region, and charge items that are not modelled. Always confirm figures against the marketplace’s current fee page and your own statements before making decisions.
No warranty
The site and its content are provided “as is”, without warranties of any kind, including accuracy, completeness or fitness for a particular purpose. We work to keep rates current, as described on the methodology page, but cannot guarantee that every figure is correct at all times.
Limitation of liability
To the extent permitted by law, Fee Math is not liable for any loss or damage, including lost profits, arising from the use of the site or reliance on its results.
No affiliation
Fee Math is independent and is not affiliated with, endorsed by or sponsored by Etsy, Amazon, eBay, Prom.ua, Rozetka, Nova Poshta or any other company named on the site. All trademarks belong to their owners.
Acceptable use
You may use the calculators freely for personal and business purposes. Do not attempt to disrupt the site, probe it for vulnerabilities without permission, or copy its content at scale. You may link to any page and quote short parts with a link back.
Content and links
Texts, calculators and design on the site belong to Fee Math. Links to other websites are provided for convenience; we are not responsible for their content. The site may display advertising from third parties, which is not an endorsement of the advertised products.
Changes
We may update these terms. The current version is always on this page with its date. Questions: contact@fee-math.com.