Terms

Terms of Use

Effective July 21, 2026. By using Marketplace Math, you agree to these terms.

Informational estimates, not professional advice

The calculators and guides provide general informational estimates. They are not financial, tax, accounting, legal, investment, or business advice. They do not guarantee a marketplace payout, profit, fee, tax result, or sales outcome.

Rates can change

Marketplaces and payment providers can change fees, bases, tiers, promotions, category treatment, country rules, and account-specific pricing without notice. You are responsible for reviewing the platform's current official policy and your completed transaction statement before making a decision.

Your inputs and decisions

You are responsible for the completeness and accuracy of inputs and for deciding which costs, taxes, fees, refunds, and business expenses apply. Marketplace Math is not responsible for losses caused by incomplete inputs, outdated third-party policies, calculation assumptions, technical errors, or reliance on an estimate.

Independent service and trademarks

Marketplace Math is not affiliated with, endorsed by, sponsored by, or operated by eBay, PayPal, Etsy, Whatnot, Depop, Grailed, Mercari, Poshmark, or any other company referenced. Names, logos, and marks belong to their respective owners and are used nominatively to identify the service whose public fees are modeled.

Acceptable use

You may use the site for lawful personal and business planning. You may not attack, overload, scrape in a manner that impairs service, bypass security, introduce malware, misrepresent ownership, republish substantial portions as your own service, or use the site to violate another platform's rules.

Intellectual property

The original site design, explanatory content, formula implementation, and code are protected by applicable law. Public facts and third-party policies remain the property or responsibility of their respective sources.

Third-party links

Links to official platforms and other resources are provided for convenience. Third-party sites have their own terms, privacy practices, and content. We do not control them.

Disclaimer and limitation

The service is provided “as is” and “as available” without warranties to the maximum extent permitted by law. To that extent, Marketplace Math and its operators will not be liable for indirect, incidental, special, consequential, exemplary, or lost-profit damages arising from use of the service.

Contact and changes

Questions may be sent to hello@marketplacemath.com. We may update these terms, and continued use after an update constitutes acceptance of the revised terms.