Fee reality check
Compare marketplace and payment fees before assuming a product is profitable.
Seller tools
Seller Tools for Marketplace Fees, Profit, and Pricing Decisions
Check whether a product still makes money after platform fees, payment processing, shipping, ads, and taxes before you list it.
Built for Amazon, eBay, Etsy, Shopify, marketplace, and handmade sellers. Inputs stay local unless a tool clearly says otherwise.
What can this collection help you decide?
This reproducible scenario table shows how hypothetical marketplace fee rates change estimated net profit at four sale prices when product cost and seller-paid shipping assumptions stay fixed. It is a planning comparison, not a statement of any platform’s current fee schedule.
Explore the reproducible Marketplace Seller Fee Scenario Benchmark →
Modeled default comparison
Compare marketplace fee calculator defaults
| Platform | Fee calculator | Typical modeled inputs | What it helps you decide |
|---|---|---|---|
| Amazon | Open Amazon fee calculator | Referral percentage + fulfillment + storage/other + product cost + inbound shipping | $35 sale: $10.75 modeled Amazon fees; $12.75 contribution profit |
| eBay | Open eBay fee calculator | Final-value and promoted percentages on price + shipping charged, plus per-order fee, item cost, and shipping cost | $110 revenue: $14.88 displayed platform fees; $42.13 estimated profit |
| Etsy | Open Etsy fee calculator | Listing + transaction + payment percentage/fixed + optional offsite ads + product and shipping costs | $30 revenue: $3.30 displayed Etsy fees; $17.70 estimated profit |
| Shopify | Open Shopify fee calculator | Payment percentage/fixed + product + shipping + advertising + allocated platform/app cost | $100 revenue: $3.20 payment fees; $39.80 estimated order profit |
These examples use the calculators' modeled defaults and editable assumptions. They are not a current-fee guarantee; verify the current platform policy and account-specific terms.
Decision support
Use these tools before money changes hands
Price the listing
Back into margin, markup, shipping, ad spend, and tax assumptions before publishing.
Run the seller admin
Use invoice, tax, and late-fee tools around the sale so operations do not eat the margin.
Tool cluster
Recommended tools
Featured
Amazon Seller Fees Calculator
Free Amazon seller fee calculator: estimate referral, fulfillment, storage, and FBA fees plus net profit and margin , with editable 2026 assumptions.
Featured
eBay Fee and Profit Calculator
Free eBay fee calculator: estimate final value, per-order, and promoted-listing fees plus net profit and margin , with editable 2026 fee rates.
Featured
Etsy Fee & Profit Calculator
Free Etsy fee calculator: estimate listing, transaction, and payment processing fees plus profit. Enter price and costs, see net earnings and margins. Privat.
Featured
Shopify Profit Calculator
Free Shopify profit calculator: estimate payment processing, product, shipping, and ad costs plus net order profit and margin , with editable 2026 assumptions.
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Profit Margin and Markup Calculator
Calculate profit, profit margin, markup on cost, and the selling price needed for a target margin from your cost and price.
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PayPal & Stripe Fee Calculator
Calculate PayPal and Stripe fees, net proceeds, or the amount to charge. Use editable presets for Stripe 2.9% + $0.30 and PayPal 3.49% + $0.49.
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Sales Tax and VAT Calculator
Sales tax calculator that adds or removes tax or VAT using your editable rate. Get the net amount, tax amount, and gross total instantly.
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Invoice Generator
Create a simple invoice and download as PDF.
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Quote / Estimate Generator
Create a simple service quote or estimate with line items, taxes, deposits, payment terms, and a copyable client summary.
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Receipt Generator
Create a simple payment receipt with payer, seller, items, tax, payment method, and a copyable receipt summary.
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Payment Terms Generator
Draft plain-language payment terms for invoices, quotes, retainers, deposits, late fees, and due dates.
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Invoice Late Fee Calculator
Estimate a simple or monthly-compounded late fee from invoice balance, rate, and overdue time.
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Freelance Hourly Rate Calculator
Estimate a sustainable freelance hourly rate from income goals, expenses, taxes, and billable hours.
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1099 Income Tax Calculator
Estimate federal self-employment tax and a quarterly planning amount for 1099 income.
Trust model
Useful pages, not thin pages
These collections group existing tools around real decisions. The calculators keep assumptions visible, link to related tools, state important limitations, and point toward quality evidence so you can verify inputs before relying on a result.
FAQ
Common questions
Do the fee calculators guarantee exact platform fees?
No. Platforms change fee schedules. The tools expose editable assumptions so you can compare scenarios and verify against the current platform policy.
Which seller calculator should I start with?
Use the platform-specific calculator first, then check profit margin and payment fees to stress-test the result.
What costs are easiest to miss?
Advertising, returns, shipping adjustments, packaging, payment processing, taxes, and account-specific fee tiers can materially change profit.