How much remains after an Amazon sale?
Subtract sourcing, referral, fulfillment, shipping and other variable costs from net sales revenue. The contribution is not final business profit because fixed costs and income taxes are excluded.
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Marketplace Fee Calculator™
Calculate contribution and margin using your own platform, payment and shipping costs.
Calculate nowWhat problem does this tool solve?
Commissions and additional charges often appear on different statements. This calculator uses your inputs on a stated net revenue basis.
What do you get?
Net revenue, platform and payment fees, variable costs, contribution and margin per sale.
Practical questions on this topic
How should I calculate eBay selling fees?
Use the rates, fee base and fixed charges that apply to your seller account and category. Enter those values rather than relying on a generic fee template.
Which Shopify costs belong in a sale calculation?
Include payment processing, transaction charges and variable app costs where they apply. Subscription fees are fixed costs and should be assessed separately.
Why can sales grow while profit stays low?
Cost of goods, platform fees, shipping, returns, ads or low prices can absorb revenue. Calculate each order's contribution before drawing conclusions about total profit.
How can I compare selling on Amazon and eBay?
Use the same product cost in two separate scenarios and enter each platform's actual charges. Compare contribution per sale, not only headline commission rates.
How do shipping charges affect the calculation?
Include seller-paid shipping and packaging. If buyers pay shipping separately, include that revenue consistently in the sale and fee bases you enter.
Frequently asked questions
Is the fee calculator free?
Yes. You can calculate without an account or purchase.
Are platform fee schedules updated automatically?
No. The calculator uses the rates you enter and makes no claim about current platform tariffs.
Can I include Amazon FBA?
Yes. Enter applicable FBA charges as other variable costs; no FBA tariff is retrieved automatically.
Can I compare platforms?
Yes. Save local scenarios and calculate each platform with its own fees.
Is contribution the same as net profit?
No. Fixed overhead, income taxes and other expenses may still be missing.
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