Marketplace fee calculator
Platform commission, card processing, shipping and storage — the whole chain of deductions at once.
Fill in the fields and the result will appear here automatically.
This model subtracts two percentage charges and two fixed amounts from the item price: commission, payment processing, shipping and storage. Both rates use the same original price, not the balance after the preceding fee. Payout is the remainder after entered deductions; the profit row also subtracts the supplied product cost but excludes any unentered taxes, ads and other costs. Actual platforms may use different bases, minimum charges and tiers, which must be checked separately.
How it works
Formula and logic
Commission and card processing are taken as shares of the item price, while shipping and storage are added as flat amounts. Seller payout = price minus every deduction; profit = payout minus cost of goods. Price margin = (payout−product cost)/price × 100%. Blank storage means zero and omits only that row. Payout or profit can be negative when deductions exceed price; it is not clamped to zero. Each rate uses the form range 0–100%. This is a tool limit, not a tariff rule.
Example
An item at 2000 with 17% commission, 1.5% processing and 55 shipping pays out 1575 and leaves 675 profit at a cost of 900. Price 1000 with all deductions 0 gives payout 1000; blank storage equals 0.
Fields and units
- Item price — $
- Platform commission — %
- Card processing — %
- Shipping per parcel — $
- Storage per parcel — $
- Cost of goods — $
How to use
- — Enter the price the buyer pays for the item.
- — Add the platform commission and card processing rates from your tariff.
- — Add per-parcel shipping and storage if they are deducted separately.
- — Enter the cost of goods to see profit rather than payout alone.
- — Check tariff bases, minimum fees and service allocation per item. Storage may be blank; enter other amounts explicitly in one currency.
Method and limitations
- Calculation method
- Formula and logic
- Data or methodology source
- Amazon: examples of different fee bases, minima and tiers; tariffs are not built into this model
- Limitation
- Two rates on price and entered fixed services. Does not reproduce every platform tariff; profit is after included costs only, without automatic taxes.
FAQ
Are the percentages taken from the price or from what is left?
Both rates use the original price here. This is the chosen model, not a rule for every platform. A shipping-inclusive fee base, minimum charge or sequential deduction needs a separate calculation.
Why is shipping entered per parcel?
Enter the amount allocated to this sale from your tariff or records. It is fixed when the model price changes, but actual shipping may depend on size, weight, destination and service; equal shipping cost for every item is not assumed.
What if storage is not deducted?
Leave the field empty or at zero — the storage row simply will not appear in the result and the calculation stays correct.
Why does profit differ from payout?
Payout subtracts the entered platform charges; profit also subtracts product cost. The row label does not establish net accounting profit: ads, returns, taxes and other unentered costs can reduce it further.
Is tax included?
Taxes are not calculated separately. Who charges, withholds or remits them depends on country, seller status and platform. Check the applicable rules; the model does not claim platforms never withhold taxes.