Plain terms for a free tool. Use it, but verify the numbers that matter.
Last updated: 13 November 2026
By using this website you agree to these terms. If you do not agree, please do not use the site.
Seller Success Lab provides free, browser-based calculators that estimate e-commerce costs and margins. They are planning aids. They are not an accounting system, a billing system, or a substitute for your own records.
Every figure produced by these tools is an estimate based on the inputs you provide and on fee structures that change without notice. Marketplace fees, GST rates, courier charges and payment gateway rates vary by category, weight, zone, price band and time. The authoritative number is always the one in your Seller Central, Supplier Panel, courier invoice or CA's advice — not the one on this site.
The tools are provided "as is" and "as available", without warranty of any kind, express or implied, including fitness for a particular purpose. We do not warrant that the site will be uninterrupted, error-free, or that any calculation is free of mistakes.
To the fullest extent permitted by law, Seller Success Lab is not liable for any loss of profit, loss of business, or any indirect or consequential loss arising from your use of, or reliance on, this site. Your use of the tools is at your own risk.
The design, code, written content and branding of Seller Success Lab belong to us. You may use the calculators freely and share links to them. You may not republish the tools or content commercially without written permission.
Amazon, Meesho, Flipkart, Razorpay, PayU, Cashfree, Delhivery and other names are trademarks of their respective owners. They are used here for identification only. This site is not affiliated with, endorsed by or sponsored by any of them.
We may update these terms, add tools, or withdraw tools at any time. Continued use after a change means you accept the updated terms.
These terms are governed by the laws of India, and any dispute is subject to the exclusive jurisdiction of the courts of India.