About MarginMates

E-commerce sellers deserve to know exactly what they keep before they list a product. That's why we built MarginMates, a margin calculator that gives you fee calculations with no guesswork and no hidden surprises.

We source our data directly from official platform documentation and keep it updated as platforms make changes. If you spot anything that looks off, let us know via the feedback link in the footer.

What We're Building

MarginMates started with TikTok Shop US because it's one of the fastest-growing e-commerce platforms and sellers needed a reliable place to understand their fees.

But we're not stopping there. We're expanding MarginMates to cover more platforms, more regions, and more tools that help sellers understand their true margins before they commit to pricing.

More platforms

Major marketplaces where sellers need clear fee visibility across different markets and business models.

More regions

E-commerce is global. Different regions have different fee structures, and sellers operating across borders need calculators that reflect that. We're working on expanding our regional coverage across multiple platforms.

More tools

Beyond fee calculators, including pricing tools, break-even calculators, and margin planners for multi-platform sellers.

We build based on what sellers actually need. If there's a platform, region, or tool you'd find useful, share your thoughts via the feedback link in the footer.

Our Commitment

Verified data

We source fee structures directly from official platform documentation. When platforms update their fees, we update our calculators.

No affiliation

MarginMates is independently built and maintained. We are not affiliated with TikTok, TikTok Shop, or any other platform we cover.