Enter one product's numbers and see net profit on all four channels at once. The cross-channel comparison is open by default below — the platform that keeps you the most money is marked "Best."
Why the same product pays differently on every channel
A single SKU can earn four different paychecks depending on where you sell it, because each platform's fee structure is built differently. TikTok Shop takes a clean 6% + $0.30. Amazon stacks a category referral on FBA fulfilment and storage. Etsy layers five separate fees. Shopify charges no commission but shifts cost to your gateway, apps, and ad spend. The spread between your best and worst channel on one product can exceed your entire margin.
How to read the comparison
Enter your sale price, landed COGS, ad spend per unit, and shipping once. The calculator applies each platform's 2026 fee schedule and ranks the net profit per unit. Remember that the inputs are not identical in the real world — Amazon's referral varies by category, Shopify's true cost includes monthly plan and apps, and Etsy's Offsite Ads fee applies to a share of sales. Treat the comparison as the starting point, then adjust the platform-specific inputs for a precise read.
Allocation is a profit lever
Inventory allocation is a capital decision. Consistently steering more units to your highest-net channel and fewer to your lowest improves your P&L with no change to COGS, price, or ad spend. Use the comparison to decide not just whether a channel is profitable in isolation, but whether it is the best home for the units you have.
FAQ
Marketplace Fee Comparison — common questions
Which marketplace has the lowest fees?
On per-transaction fees, TikTok Shop (6% + $0.30) and Shopify (gateway only, no commission) are typically lowest, while Etsy and Amazon stack more layers. But "lowest fees" is not "highest profit" — Shopify requires you to fund your own traffic, and Amazon's reach can justify its fees. Compare net profit per unit, not headline rates.
Where will I make the most profit on my product?
It depends on your price point, COGS, return rate, and how much you must spend on ads to drive sales on each channel. Enter your numbers in the comparison calculator to rank all four by net profit per unit, then refine the platform-specific inputs for an exact answer.
Can I sell the same product on all four platforms?
Yes, and many sellers do — but because fees differ, the same product may need a different price on each channel to hit the same net profit. The comparison shows you where each channel lands so you can price and allocate inventory deliberately instead of using one price everywhere.
How accurate is the comparison?
It uses published 2026 fee schedules for all four platforms. For the most precise read, set Amazon's referral % to your category, add Shopify's plan and app costs to your model, and account for Etsy's Offsite Ads where relevant. The tool is a high-precision estimate, not a substitute for your accountant.