Mercari fee calculator: see the selling fee, payment processing fee, and your net payout for any list price. Free, private, editable rates, no signup.
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Marketplace and payment fees are user-entered estimates.
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$50 sale across platforms
What this means for your numbers: On the worked example's $50 sale, the platform spread is $5 (Mercari) vs $7 (eBay) vs $10 (Poshmark). Across 100 monthly sales, that choice is $200-$500.
Illustrative breakdown using the worked example above. The calculator computes your own numbers with the same formula.
Worked example: a $150 sale
Say you list a jacket for $150 and it sells. Mercari's fee is a flat 10% of the sale price, with no separate per-order or payment-processing charge, so the arithmetic is one line: 150 x 0.10 = $15.00. Your net proceeds before shipping are 150 - 15 = $135.00.
Shipping changes the picture. If you buy a Mercari label for a 1 lb package, that cost comes out of your earnings too. A $8.05 label on this sale means 135.00 - 8.05 = $126.91 in your pocket, and the effective total cost of selling is (15.00 + 8.05) / 150 = 15.4% of the sale price. If the buyer covers shipping, the label cost is added to their order instead and you keep the full $135.00.
Scaling the example shows why the flat rate matters: at $25 the fee is $2.50, at $75 it is $7.50, and at $400 it is $40.00, always exactly 10% of price. Unlike platforms that layer a payment fee on top, there is no second percentage to track, so net proceeds are always price x 0.90.
Where the math breaks down
The 90% rule only holds under specific conditions, and several common situations move your real take-home below it.
First, promotions. Mercari periodically offers discounted selling fees (for example, 2.9% or 5% fee events on selected listings) and coupon programs where the seller absorbs part of a buyer discount. A $150 sale during a 2.9% fee promo nets 150 x 0.971 = $145.65 instead of $135.00, so the calculator overstates fees in that window. The reverse also happens: if a buyer returns an item, Mercari refunds the buyer and the sale fee, but you may be out the original shipping label cost, roughly $8 to $15 on a typical package, with no offsetting revenue.
Second, what the formula excludes: shipping labels you purchase, sales tax (collected from the buyer, not you), and Off-Facebook payments like cash or Zelle arranged outside the app, which violate the terms of service and forfeit seller protection. A $150 sale with an $8.05 label and one return averages out to about $118 effective proceeds per completed sale if roughly one in ten orders is returned, not the $135 the simple formula suggests.
