Mercari Profit Calculator
Enter the selling price, buyer-paid shipping, item cost, label or carrier cost you cover, packaging, other order costs, and the seller fee rate shown in your account. The calculator keeps Mercari's seller fee separate from your real operating costs so profit, margin, and ROI reflect the payout you can actually keep.
Best for
Make the next pricing or planning decision with context
Compare what remains from your Mercari sales after the costs and fees you enter, then test a conservative and target scenario. It covers Mercari take-home profit after the editable U.S. starting seller fee of 10% on item price plus buyer-paid shipping and all entered costs.
Instant calculations · Editable fee assumptions · Export-ready results
Inputs
Values update results instantly. Adjust fee assumptions to match your seller dashboard.
Your figures are saved in this browser on this device.
Sale details
Item price the buyer pays.
Buyer-paid shipping, or 0 when shipping is included in price.
Fee assumptions
U.S. starting assumption: 10% of item price plus buyer-paid shipping. Edit for other terms.
Your costs
Your sourcing cost, thrift, wholesale, or handmade inputs.
Carrier or label cost you absorb or that is withheld from payout, even when buyer-paid shipping is entered.
Box, polymailer, tissue, and packing supplies.
Promotion, storage, software, or labor allocated per order.
Results
Live estimates based on your inputs and editable fee assumptions.
Seller revenue before fees
$35.00
Selling price plus shipping charged.
Total Mercari seller fees
$3.50
Editable seller fee applied to the transaction subtotal.
Total costs excluding seller fee
$11.00
Item, shipping, packaging, and other costs.
Total out (fee + costs)
$14.50
All seller outflows entered here.
Net profit
$20.50
Seller revenue minus the fee and all costs.
Profit margin
Excellent58.6%
Profit as a percentage of seller revenue.
ROI on item cost
205.0%
Profit divided by item cost.
What this means
Healthy result: 20.50 profit at 58.6% margin. The 10.0% seller fee is 3.50, and entered costs total 11.00.
Mercari profit breakdown
Interactive breakdown of fees, costs, and remaining profit.
Distribution
- Mercari seller fee$3.5010.0%
- Item cost$10.0028.6%
- Ship + pack + other$1.002.9%
- Net profit$20.5058.6%
Total $35.00 · 4 segments · interactive
Line-item breakdown
Dollar amounts, share of revenue, and visual proportion.
- Selling price
- $35.00
- Shipping charged
- $0.00
- Seller revenue
- $35.00
- 10.0% seller fee
- $3.50
- Total Mercari seller fees
- $3.50
- Item cost
- $10.00
- Actual shipping cost
- $0.00
- Packaging
- $1.00
- Other costs
- $0.00
- Total costs ex fee
- $11.00
- Total out
- $14.50
- Net profit
- $20.50
- Profit margin
- 58.6%
- ROI
- 205.0%
Assumptions used
- • Seller fee 10.0% × seller revenue 35.00 = 3.50
- • Costs excluding fee: 11.00
- • Buyer protection charges and a separate seller processing fee are excluded from this starting model.
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Explore MercariMercari Profit Calculator
Generated 9/10/2026, 8:08:12 PM · Currency USD
Inputs
- Selling price: 35
- Shipping charged to buyer: 0
- Seller fee rate: 10
- Item cost (COGS): 10
- Actual shipping cost you pay: 0
- Packaging cost: 1
- Other costs per order: 0
Results
- Selling price: $35.00
- Shipping charged: $0.00
- Seller revenue: $35.00
- 10.0% seller fee: $3.50
- Total Mercari seller fees: $3.50
- Item cost: $10.00
- Actual shipping cost: $0.00
- Packaging: $1.00
- Other costs: $0.00
- Total costs ex fee: $11.00
- Total out: $14.50
- Net profit: $20.50
- Profit margin: 58.6%
- ROI: 205.0%
Interpretation
Healthy result: 20.50 profit at 58.6% margin. The 10.0% seller fee is 3.50, and entered costs total 11.00.
How it works
Methodology & formulas
This calculator is transparent by design. Review the steps and formulas so you can trust the estimate and adjust assumptions when your dashboard differs.
Calculation steps
- 1Add item price and buyer-paid shipping to get seller revenue before fees.
- 2Apply the editable seller fee rate to that same subtotal.
- 3Add item, shipping, packaging, and other seller costs.
- 4Subtract the fee and costs to calculate profit, margin, and ROI.
Formulas
- Seller Revenue = price + shippingCharged
- Seller Fee = Seller Revenue × sellerFeePercent
- Costs = itemCost + actualShippingCost + packagingCost + otherCosts
- Profit = Seller Revenue − Seller Fee − Costs
- Margin = Profit ÷ Seller Revenue × 100
- ROI = Profit ÷ itemCost × 100
Important assumptions
- Starting U.S. model: seller fee = (sellingPrice + shippingCharged) × 10%.
- Seller fee rate is editable for legacy listings, non-U.S. sellers, account terms, or future changes.
- Buyer protection fees are buyer-side charges and are not counted as seller costs.
- Costs excluding fee = itemCost + actualShippingCost + packagingCost + otherCosts.
- Profit = seller revenue − seller fee − costs excluding fee.
Sources & review
Know what this estimate is built on
Use these official references to locate the policy, plan, or help details behind the editable inputs.
Official references
Use the current terms
These official references are starting points for published policies, pricing, or help. They do not validate every default in this calculator. Rates, plans, eligibility, regions, and account terms can change, so compare the editable fields with your account before relying on the result.
Defaults are editable estimates. Match them to your current account, provider statement, official authority, lender, or adviser before making a pricing or investment decision.
Calculator model reviewed: August 9, 2026. This date covers the page and calculator guidance, not a guarantee that every live platform rate or term was re-audited on that date.
Worked example
$35 sale with $10 item cost
Selling price $35, shipping charged $0, seller fee rate 10%, item cost $10, actual shipping $0, packaging $1, other costs $0.
FAQ
Common questions
Related guides
Read the guide behind the number
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