Mercari Fee Calculator

Mercari’s US selling fee is 10% of the item price plus buyer-paid shipping, charged when the item sells. That is the rule on the official Help article “Fees on Mercari,” which we fetched on 11 November 2026, and it has been in effect for new and updated listings since 6 January 2025. Listing is free. Buyers pay a separate Buyer Protection fee of 3.6% of item price plus buyer-paid shipping on those listings; that fee is not deducted from the seller’s 10%. This calculator keeps the two sides apart so you do not treat a buyer fee as if it came out of your payout.

What 10% actually sits on

If you sell a $40 item and the buyer pays $10 for shipping, the selling fee is 10% of $50, or $5. Sales tax is not part of that 10% in this model, because the Help article describes the selling fee as 10% of item price and buyer-paid shipping. Tax still matters for your payout if it was collected and remitted, so the calculator lets you enter it and then subtracts it from the amount you keep. Your shipping cost — the postage you actually pay, which may be lower than what the buyer was charged — belongs in profit, not in the 10% base, unless you are the one being charged in a way the Help article does not describe.

selling fee = 10% × (item price + buyer-paid shipping)
payout = item price + buyer-paid shipping − selling fee − sales tax remitted − optional Instant Pay or authentication fees
profit = payout − cost of goods − your shipping cost

Optional costs on the same official page include Instant Pay at $3 per transfer, with a monthly cap of $600 and a once-per-day limit on eligible debit cards; a $2 non-refundable fee for each failed direct deposit; Mercari Authenticate at $5; and an Authenticate Certificate at $10. Tick those boxes only when you will actually use the services. Direct deposit itself is not given a per-transfer fee on the page we read, other than the failed-request charge.

Worked example

How this differs from eBay and Poshmark

Mercari’s 10% on item plus buyer-paid shipping is usually less than eBay’s 13.6% plus $0.40 on a total that also includes tax, and it is usually less than Poshmark’s 20% once you are over $15 — but only if you compare the same item, the same postage, and the same tax treatment. Mercari’s buyer fee can change what the buyer is willing to pay, which is a pricing problem, not a seller-fee line. If you raise the item price to offset the buyer fee, you also raise your own 10%. The comparison pages exist so you can see that loop instead of arguing about a single percentage.

Limits

Older listings created before 6 January 2025 had a transition described on the same Help article; this calculator models the current 10% structure for new and updated listings. We do not invent a pre-2025 seller rate here. OpenFeeCalculator is not affiliated with Mercari.

Seller fee versus Buyer Protection

Since 6 January 2025, the official Mercari help article we fetched bills sellers 10% of the item price plus buyer-paid shipping. The 3.6% Buyer Protection fee is described as buyer-paid, so this calculator does not subtract it from your payout. If you raise your item price to 'cover' a fee the buyer pays, you may lose the sale without changing the official seller percentage. Enter shipping the way the listing actually works: buyer-paid shipping belongs in the 10% base; your own postage still belongs in the profit line as a cost.

When 10% is not automatically the cheapest path

A 10% seller fee often looks cheaper than eBay's 13.6% plus $0.40, and cheaper than Poshmark's 20% above $15. That ranking can flip on a sub-$15 Poshmark sale, on an eBay category with a lower official rate such as sneakers over $150, or when eBay shipping and tax inflate the official total. Use the comparison grid with honest postage on each column rather than converting every platform into a fake 10%. Mercari's sell-through and audience are not in this math, and we will not invent a conversion rate to close that gap. The rate vintage is 11 November 2026; the 6 January 2025 date is Mercari's stated effective date for the 10% seller fee, recorded in the changelog.

How to use this calculator

1. Enter the item price and the shipping the buyer pays. Those two numbers are the official 10% base. Do not omit shipping just because you later spend less on postage.
2. Add tax only if it was collected. Tax is remitted, not kept, but entering it keeps the payout honest.
3. Tick Instant Pay or authentication only when you will use them. They are flat official amounts and will otherwise overstate your costs.
4. Compare before you choose a platform. Run the same sale on the comparison pages if eBay or Poshmark is also an option.

Frequently asked questions

Sources and updates

• Fees on Mercari | Mercari Help, checked 2026-11-11.