Marketplace Commission Comparison Calculator

Compare seller profit under different marketplace commission rates using the same price, COGS, shipping and ad cost.

Need help with the calculation?

Compare low, standard and high commission rates on the same order to see how much fee structure changes profit.

Enter the order economics

Sale price ($) Product cost / COGS ($) Shipping or fulfillment ($) Ad cost per order ($)

Advanced assumptions

Low commission (%) Standard commission (%) High commission (%) Payment processing (%) Fixed fee ($) Other per-order cost ($)

Best commission scenario

$0.00

Profit under each commission rate

For beginners: how to read this result

Commission is a price percentageA 15% commission on an $80 sale is $12 before any fixed or payment fees.

Compare profit, not just feeA higher fee channel can still win if it delivers lower ad cost or better conversion.

Use the spreadThe spread shows how much room you have to pay for reach, convenience or faster sales.

Use your own current fee rates. The preset rates are examples for planning, not official marketplace data.

Use this calculator when a category, plan or sales channel has different commission rates. It keeps product cost, shipping and ad spend constant, then calculates profit under three fee rates.

Good use cases

checking whether a different category fee changes margin;
comparing a standard plan with a lower-fee plan;
testing whether a high-commission channel still works.

Keep in mind

Real payout rules can include fixed fees, payment fees and refunds. Enter those assumptions in the advanced section.