📈

Amazon Profit After Fees & PPC Calculator

See what an Amazon sale actually nets you after the referral fee, FBA fulfillment fee and your PPC advertising cost — the real per-unit profit and margin.

Selling price

Product cost (COGS)

Referral fee

FBA fulfillment fee

Advertising cost of sale (ACoS)

Loading calculator…

How it works

Net profit = price − COGS − referral% × price − FBA fee − ACoS% × price · Net margin = profit ÷ price × 100

Amazon takes a percentage referral fee on the full sale price plus a fixed FBA fulfillment fee, and your PPC spend eats into every advertised sale on top of that. Sellers who price only against product cost are routinely surprised to find PPC turning a healthy-looking margin negative. Expressing ad spend as ACoS makes it scale with price, so you can see the true contribution of each unit before overhead.

Worked example

A $25 unit costing $7 with a 15% referral fee ($3.75), a $5.50 FBA fee and 20% ACoS ($5.00) nets 25 − 7 − 3.75 − 5.50 − 5.00 = $3.75, a 15% margin. Push ACoS to 35% and the ad cost rises to $8.75, cutting profit to $1.00.

Frequently asked questions

What is ACoS and how does it differ from PPC spend?

ACoS (advertising cost of sale) is your ad spend divided by the sales those ads generated, expressed as a percentage. A 20% ACoS means you spent $0.20 on ads for every $1 of advertised revenue, so on a $25 sale the ad cost is $5. It scales the PPC cost with price automatically.

Does this include Amazon storage or long-term fees?

No — this is per-sale profit covering the referral fee, FBA fulfillment fee and PPC. Monthly and long-term storage fees are separate; use the FBA storage calculators to layer those on top before judging overall profitability.

Why is my real Amazon margin lower than my gross margin?

Gross margin only subtracts product cost. Amazon takes a referral percentage on the whole price and a fixed fulfillment fee, and advertising claims a further slice of each sale — together they often halve the margin you see before fees.

Related calculators

Amazon FBA Profit Calculator

Estimate real Amazon FBA profit after the referral fee, the FBA fulfillment fee, monthly storage, your product cost and inbound shipping — every input editable.

Amazon Seller Fee Calculator

Calculate your real Amazon profit after the referral fee, optional FBA fulfillment and any closing fee — with editable, category-adjustable rates.

Amazon FBA Storage Fee Calculator

Estimate your monthly Amazon FBA storage fees from item size, units in stock and season — with the per-unit cost.

Ad Break-Even ROAS Calculator

Find the return on ad spend you must hit just to break even, from your product margin — plus the matching break-even ACoS and profit-target ROAS.

Profit Margin Calculator

Turn revenue and cost into gross profit, profit margin and markup — and see why margin and markup are not the same number.

Educational estimate, not financial advice. Fee rates and duties change — confirm current figures with the marketplace, carrier or customs authority.