Amazon Revenue Calculator Explained: How to Use Amazon's FBA Calculator, What Every Fee Line Means, and What It Leaves Out of Your Profit
)
Last verified September 2026. The Amazon Revenue Calculator is Amazon's free calculator for estimating the fees and profit on a product before you sell it. It works out the referral fee, the fulfilment fee and related charges for a specific item and shows a net profit per unit for FBA and FBM side by side. It does not include everything that comes out of your margin, most notably advertising and returns. This guide covers where to find the calculator, how to use it, what each fee line means, what to add by hand, and how to read the result.
Where to find it and what you need before you start
Amazon's Revenue Calculator (earlier called the FBA Revenue Calculator, and still searched for as the Amazon FBA calculator) is free and opens without a login; it is also reachable from Seller Central, where Amazon has added a Profit Analytics view alongside it. Choose the marketplace first, since fees and size tiers differ by country.
Have these ready before you open it: the ASIN, or the product's dimensions and weight if it is not listed yet; your selling price, net of any coupon or promotion you plan to run; and your landed cost per unit, meaning product cost plus shipping, duties, insurance and packaging, taken from invoices and carrier bills rather than estimated. If you advertise, also pull your average ad spend per unit sold from the Ads console, and your return rate for the last 30 to 90 days from Business Reports; the calculator will not add those for you, but the section below does. Amazon product research covers how to find and shortlist products before you price them.
Using the Amazon FBA revenue calculator step by step
Open the calculator and select your marketplace.
Enter your ASIN, or search by product keyword; for an unlisted product, enter the dimensions and weight.
Choose the fulfilment method. The results show FBA and FBM side by side, so you can compare.
Enter your selling price and your cost per unit.
Add the optional costs the tool offers, such as shipping to Amazon, prep and storage assumptions.
Select Calculate. The output shows total fees, net profit per unit and margin for each fulfilment method.
The free calculator suits a quick check on one product. It does not save your work, compare many SKUs at once or project trends over time.
What every fee line means
Fee line | What it is | 2026 basis (confirm against Amazon's fee page) |
| Referral fee | Amazon's commission on the sale price, by category | Typically 8% to 15%, with a minimum per item |
| FBA fulfilment fee | Picking, packing and shipping, by size tier and weight | Increased by an average of $0.08 per unit from 15 January 2026; a larger discount applies to items priced under $10 |
| Monthly storage fee | Space your stock occupies in Amazon's warehouses | $0.78 per cubic foot January to September, $2.40 October to December, for standard-size items |
| Aged inventory surcharge | Stock that sits unsold too long | Applies from 271 days in the warehouse |
| Inbound placement fee | Sending stock to Amazon's chosen warehouses rather than splitting shipments | Depends on the shipment split you choose |
| Low-inventory-level fee | Holding too little stock relative to sales | Applies when inventory falls below Amazon's days-of-supply threshold |
| Returns processing fee | Customer returns in high-return categories | Apparel and shoes, and other products above the category return-rate threshold |
| Prep and labelling | Preparing units to Amazon's standards | Since January 2026 Amazon no longer offers FBA prep and labelling services to US sellers, so this is your cost or your prep centre's |
The calculator shows the referral and fulfilment fees for the ASIN and lets you add storage and inbound assumptions. Amazon updates fees every year, so confirm the calculator you use is on the current table; running 2025 rates gives a 2025 answer.
What the calculator leaves out
The number the calculator calls net profit is not your real margin. It leaves out several costs that come out of every sale or every month:
Advertising spend. Amazon ACoS explains how to measure and control it; for the margin calculation use TACoS, your total ad spend as a share of total sales, because it comes straight off your margin.
Returns and refunds, including the cost of an item that comes back unsellable and any returns processing fee. Amazon return rates run from about 5% in low-return categories to 15% or more in apparel and electronics; use your own category's rate.
Prep and labelling, and shipping your stock to Amazon.
Long-term storage beyond the aged-inventory threshold, and the Q4 storage rate if your stock sits through October to December.
Your seller subscription. The Professional plan is $39.99 a month, so spread it across your monthly units.
Taxes and currency effects if you sell in more than one country.
Here is an illustrative example that turns the calculator's figure into a real margin. Every number below is made up to show the method.
Line | Amount | Running profit |
| Sale price | $30.00 | |
| Referral fee (15%) | -$4.50 | |
| FBA fulfilment fee (illustrative) | -$5.50 | |
| Cost of goods (illustrative) | -$9.00 | |
| Calculator's net profit | $11.00 | |
| Advertising (10% of price) | -$3.00 | $8.00 |
| Returns and refunds allowance | -$1.20 | $6.80 |
| Shipping to Amazon | -$0.60 | $6.20 |
| Prep and labelling | -$0.30 | $5.90 |
| Subscription share ($39.99 over about 100 units) | -$0.40 | $5.50 |
| Real profit per unit | $5.50, about 18% of price |
Reading the result: what a good margin looks like
Margins vary widely by category, price and how much you spend on ads. One 2025 industry report (TrueProfit) puts the average Amazon seller margin at about 15% to 20%, and a margin in single digits leaves little room for a bad month. Treat that as a rough reference, not a target.
Three sanity checks help. Does the referral fee match your category's rate? Is your cost figure a landed cost, with freight and duties, and not just the supplier price? And does a second calculator give a similar answer? Different tools use different fee databases, so a second opinion catches a stale table.
Once the basics hold, use the calculator to test decisions before you make them: what a $1 price cut or a 10% rise does to the margin; whether a bundle or multi-pack lowers the per-unit fulfilment and storage cost enough to be worth it; and whether stock can turn fast enough in Q4 to avoid the higher storage rate.
Third-party calculators and when to use them
Paid tools add what the free calculator lacks: saved products, bulk analysis across SKUs, profit tracking over time and a connection to your seller account. Several product research suites include a profit calculator, among them Helium 10, AMZScout and Jungle Scout, and Seller Assistant offers one aimed at arbitrage and wholesale sellers that also estimates FBM costs, sales tax and UK VAT. Consider one when you manage more than a handful of SKUs, spend on advertising or carry meaningful return volume. Amazon FBA software compares the wider category.
The costs that show up after the sale
The margin line the calculator cannot see is what happens after the order: returns, replacements and refunds. Each one is decided in the support inbox, by how fast a message is answered and how the return is handled, and a product with a healthy calculator margin and a high return rate can still lose money. Knowing which SKUs generate the most tickets and returns is the other half of the profit picture. See Amazon helpdesk software for how eDesk connects to Amazon, and Amazon returns for sellers for the return rules themselves.
FAQ
What is the Amazon Revenue Calculator?
Amazon's free tool for estimating the fees and profit on a product, for FBA or FBM. It shows fees, net profit per unit and margin.
Is the Amazon FBA calculator free?
Yes. Amazon's own calculator is free and can be used without a login.
How accurate is the Amazon revenue calculator?
It is as accurate as the inputs you give it and the fee table it uses. It leaves out advertising, returns and several other costs, so treat its net profit as a starting point.
What fees does the Amazon calculator include?
The referral fee and the FBA fulfilment fee for your product's size tier, plus the storage and inbound charges you choose to add. Confirm the exact list in the live tool.
Does the Amazon revenue calculator include advertising costs?
Not by default. Add your advertising cost per unit yourself, using your ACoS or TACoS.
How do I calculate profit on Amazon?
Sale price, minus cost of goods, minus the referral fee, minus the FBA fee, minus storage, advertising, returns and any prep or shipping costs. What is left is your real profit per unit.
Protect your margin after the sale as well as before it
See Amazon helpdesk software for how eDesk connects to Amazon.
Author:
)