See what you actually keep, or price for what you want to keep.
Run a listing price forward to a net payout, or run a target payout backward to the listing price that clears it. Percentage fees, fixed transaction fees, shipping charged to the buyer and optional buyer-paid tax are handled separately so nothing hides inside a single blended number.
Calculation type
Preset rates are locked but still readable and focusable. Choose Custom structure to edit them.
Marketplaces charge their percentage on the total sale, so shipping you collect is added to the fee base. Enter 0.00 for free shipping.
Add customer-paid sales tax / VAT
Collected on top of the transaction. Raises what the buyer pays, not what you keep.
How the math works
Forward
Listing price to net payout
base = price + shipping
payout = base − (base × rate) − fixed
Reverse
Target payout to listing price
base = (target + fixed) ÷ (1 − rate)
price = base − shipping
Adding the fee percentage straight onto your target payout undercharges every time. The fee is levied on the final transaction value, which is higher than the payout, so the rate has to be divided out rather than added back.
Preset fee structures
| Marketplace | Percentage | Fixed | Composition |
|---|
Preset rates reflect standard published seller structures and exclude category-specific overrides, subscription tiers, ad fees, international or currency-conversion surcharges, and regulatory operating fees. Amazon referral rates in particular vary by category. Verify against your own settlement reports before pricing at scale, and use Custom structure for anything non-standard.
Common questions
The four questions sellers ask most about marketplace fee math.
How do you calculate net payout from a marketplace listing price?
Multiply the fee base by the marketplace percentage fee rate, add the fixed per-transaction fee, then subtract that total from the fee base. The fee base is the item price plus any shipping you charge the buyer. A 100.00 USD listing with no shipping on a 13.25 percent plus 0.30 USD structure incurs 13.25 USD in percentage fees and 0.30 USD fixed, leaving a net payout of 86.45 USD.
How do you work backwards from a target payout to a listing price?
Divide the sum of the target payout and the fixed fee by one minus the percentage fee rate expressed as a decimal, then subtract any shipping you charge the buyer. Listing price equals ((target payout plus fixed fee) divided by (1 minus fee rate)) minus shipping charged. Simply adding the fee percentage back onto the target payout undercharges, because the fee is levied on the higher final transaction value rather than on the payout.
Is shipping included when marketplaces calculate their fees?
On most major marketplaces the percentage fee is assessed on the total amount of the sale, which includes the shipping amount charged to the buyer, not the item price alone. This calculator therefore adds shipping charged into the fee base. The net payout shown is what the marketplace deposits, so the cost of the shipping label you buy is not deducted from it.
Does sales tax or VAT reduce the seller payout?
In marketplace facilitator arrangements the tax is collected from the buyer on top of the transaction and remitted by the platform, so it raises the gross total the buyer pays without changing the seller net payout. The tax layer in this calculator is modelled that way and is excluded from the percentage fee base.