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Amazon FBA Calculator

Estimate referral, fulfilment and storage fees to find your real net profit and ROI per unit.

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Amazon FBA Calculator is free to use as often as you like, directly from this page. It sits under Pricing & margins in our catalogue, alongside eBay Fee Calculator and Etsy Fee Calculator.

How to use it

  1. Open the tool — no signup or install needed.
  2. Enter your input or adjust the available options.
  3. Get your result instantly, then copy or download it.

Frequently asked questions

What does Amazon FBA Calculator do?

Estimate referral, fulfilment and storage fees to find your real net profit and ROI per unit.

When would I actually use this?

Setting a price that survives contact with reality: covering costs, hitting a target margin, and checking what the marketplace and payment fees leave behind.

What is the most common mistake?

Confusing margin with markup. A 50% markup is a 33% margin, and pricing as if they were the same undercharges by a third on every unit sold.

How is Amazon FBA Calculator different from eBay Fee Calculator?

They sit next to each other but answer different questions: eBay Fee Calculator is the one to open when you need it to compute eBay final value, fixed and promoted listing fees to see what you actually keep on a sale. Pick whichever matches what you're starting from — both are free.

Is there a tool for the next step?

Etsy Fee Calculator is the closest one after this: Break down Etsy listing, transaction, processing and offsite ads fees, with a target-margin price.

What else is worth having open alongside it?

Invoice Late Fee Calculator and Patent Filing Fee Calculator — they come up in the same task often enough to be worth a second tab.

Where do the figures come from?

Margin arithmetic is universal; the fee schedules are not. Marketplace and payment rates are read from published tariffs, which each provider revises on its own calendar — re-check them before pricing a new line.

Further reading

All guides →
ExplainerHow Amazon FBA Fees Work: Every Layer on a $25 SaleA $25 unit does not cost 15 percent to sell. Referral, fulfilment, fuel surcharge, storage and returns stack to $8.14 — 32.6 percent of the price — before you have paid for the product.ExplainerHow eBay Fees Work: The Percentage Is Not on the Price You SeteBay charges its final value fee on the item plus the postage the buyer paid. A 13.6 percent rate on a $100 item with $10 shipping costs $15.36 — 15.4 percent of the price you actually set.ExplainerHow Etsy Fees Work: The 6.5 Percent Is About a Third of the BillThe famous transaction fee is one of five layers. On a $40 item with $6 shipping, Etsy's order fees come to $4.62 — and $11.52 if the sale came through Offsite Ads.ComparisonStripe vs PayPal Fees: What Each One Actually TakesOn a $100 domestic card sale the gap is $0.78. On the same sale from abroad with a currency conversion it is $2.78. The headline rate is the part that matters least.ExplainerWhat an Ecommerce Order Actually Earns YouBetween the price on the product page and the money in the bank sit seven deductions, one of which is charged per order rather than per euro. Walk one order down the ladder, then compute the return rate at which the whole thing goes negative.GuideAn Unpaid Invoice: The Late-Payment Interest the Law Already Grants YouYou do not need a penalty clause. A European directive gives every business creditor a statutory interest rate and a fixed recovery sum, both due automatically, and a term in the contract trying to take them away is void or presumed unfair. Here are the current rates and what they produce on a real invoice.