MarginKoala

What is the marketplace taking?

Enter your numbers below. Get the answer first, then Koala's next move.

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Result detail level
Numbers to enter
Enter sales, orders and chargeable listings from one period, then the fee schedule that actually applies to your account. Free listing allowances and tiered platform rules are not guessed.
$

The sales amount the commission percentage applies to.

Only listings the insertion fee actually applies to after free allowances or exemptions.

%

Use the actual percentage that applies to the sales above.

$
$
Koala's Calculated Result
Total marketplace charges and the exact breakdown implied by the inputs.

Add sales, orders or chargeable listings for one period, then the rates that apply.

MarginKoalaKoala's Professional Opinion

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What should I check next?

Frequently asked questions

What does the marketplace charge?

Marketplace fee structures vary by platform, category, geography and seller plan. Enter the commission, listing and fixed-order charges that actually apply to the activity being modelled; do not assume a standard marketplace fee stack.

Marketplace Fee Cost

How do I capture the actual rate?

Pull last month's invoice from the marketplace — Etsy and eBay statement exports total commissions, insertion fees and transaction fees separately. Enter each line so the calculator reproduces what the marketplace actually charged.

Marketplace Fee Cost

What if I sell on multiple marketplaces?

Run this calculator for each platform and sum the monthly fees — or enter a volume-weighted blended rate if you only want a single back-of-napkin number. The per-platform view is sharper for raising listings on the more expensive channel.

Marketplace Fee Cost

When is a marketplace worth the fee?

Use the calculator result for the inputs entered and keep any market-response or operating recommendation separate from the deterministic calculation. Support that additional assumption with the business’s own evidence or an explicitly labelled scenario.

Marketplace Fee Cost

Educational use, not financial advice. Numbers are estimates for planning; consult a qualified professional before acting on them.