Free tool
Retail price minus COGS is not your margin. Amazon takes its cut in several places, not one, and tax behaves differently in each country. Run one SKU through the lot and see what is actually left.
Australia and the United States, same model. Free, nothing to sign up for.
01 — the calculator
A sample product is loaded so you can see how the fees stack up. Put in your own numbers and the result updates as you type. Switch the marketplace and run the same SKU again. The two answers are rarely as close as founders expect.
Go
Three things about how this is built. The first is what the headline is. It is your Amazon margin: the price less any discount you run, less tax, less landed COGS, less the referral, fulfilment and storage fees, less inbound freight, less what returns cost you. It is not gross profit, because those channel costs are already out of it. Two variable costs sit outside it: advertising and your own overhead. Discounts and returns are inside it only once you fill in those two fields, which both start at zero, and the two headline labels name whatever is still missing so you always know which number you are looking at. My minimum is a 40% margin on this basis, which is the Go band above. There is no ad spend field and no ad allowance in the result, because ad cost swings too far by category, by season and by how crowded your keywords are. No single number would mean anything. It is still a real cost and it still comes out of the figure above, so read every result as the ceiling rather than the answer. What the verdict is telling you is whether there is enough room left to advertise into at all.
The second is how discounts and returns are costed, because both are more than a haircut on revenue. Amazon works out the referral fee and picks the fulfilment price band off what the customer actually pays, so a coupon or a Lightning Deal moves your fees as well as your revenue, and on the US bands at $10 and $50 a small discount can move the fulfilment fee more than it moves the price. On a refund you get the referral fee back less Amazon's refund administration fee, the lesser of $5 or 20% of the referral. The fulfilment fee is not refunded at all, and neither is storage, so you carry both on a unit that came back. A returned unit is treated as landed cost you do not get back. That is deliberately conservative, because plenty of returns do go back into sellable stock, so if most of yours do, this reads a little harsh. Returns handling and inspection are not in it either.
The third is GST. If you are registered, the GST on Amazon's referral, fulfilment and storage fees and on your inbound freight comes back to you as an input tax credit, so the tax you actually hand over is the GST on the sale less those credits. That is what the net GST line shows, and it is why the fee lines above are held excluding GST for registered sellers and grossed up by 10% if you are not. Landed COGS is treated as already excluding GST, so if you are importing, the GST you pay at the border is claimable on top and is not shown here.
This is a planning estimate built from Amazon's published rates and the numbers you typed in. It is not financial, tax or accounting advice, it is not a quote, and it is not a guarantee of what you will earn. Your settlement report will differ. Confirm your own figures in Seller Central before you commit to stock or a price. Nothing you type here leaves your browser.
On a typical first product, Amazon's fees plus advertising come close to the cost of the product itself. That is normal for FBA. The point is knowing it before you launch, not after your first settlement report. This model covers the three fees every unit carries, referral, fulfilment and storage, plus the freight to get each unit into a fulfilment centre and the tax, which is where most spreadsheets go wrong. It takes off discounts and returns too, once you give it a rate for each. Both start at zero, because every other default on that form is a rate Amazon publishes and there is no published number for either of those, so it waits for yours rather than inventing one. Advertising is not in it, for the reason above. One other thing sits outside it, the aged inventory surcharge, which only lands on stock unsold past 271 days.
On the US side, three things behave differently and all three catch Australian sellers out. Tax is not yours to remit, because Amazon collects and pays sales tax under marketplace facilitator laws, which is why that line reads zero. Fulfilment is banded three ways by sale price, under $10, $10 to $50 and over $50, so the same box costs a different amount to ship depending on what you charge for it. Australia bands it too, but only once, at a reduced rate under $13. The US then adds a 3.5% fuel and logistics surcharge to every published fee, live since April 2026. And there is a 30 cent minimum referral fee, which quietly makes cheap products much worse than the percentage suggests. US figures are in USD, so you are carrying FX and repatriation on top of everything shown.
A word on Europe, because it is the next market most people look at and it is not in this calculator. The EU's General Product Safety Regulation has applied since 13 December 2024, and it changes what it costs to sell a physical product there. You need an EU Responsible Person, a business or individual established inside the EU, named with a full address on the listing itself. Amazon collects that in the compliance fields in Seller Central, and sellers report listings being blocked at save or deactivated where it is missing. Amazon has also signalled further checks on labelling, on-listing safety information, and documentation such as your technical file, risk assessment and test reports, so treat the requirement as tightening rather than settled. Check Amazon's own current GPSR guidance before you plan around any of it. Appointing a Responsible Person is an ongoing subscription cost, usually charged per brand or per product line. None of that is in the model above, and it is not in Amazon's own revenue calculator either. Budget for it separately before you decide Europe is worth it.
Where the fulfilment numbers come from. The Australian rates are Amazon's own published schedule, effective 10 June 2026, and the inbound default is Amazon's flat $4.99 a box under its Partnered Carrier Program. The US rates are the 15 January 2026 non-apparel card with the surcharge applied, cross-checked against three independent sources because Amazon keeps its US card behind a seller login. Both are the standard cards, so apparel, dangerous goods and peak season October to December all run higher. One honest gap: for US standard-size items the independent sources agree to the cent, but for the bulky and extra-large tiers they do not, and they disagree by up to about 30 cents a unit. Those tiers are close, not exact. Extra-large is also modelled only to 50 lb, and Amazon charges heavier items on a steeper scale again. If your product is bulky, get the number from Seller Central rather than from here.
02 — where the money goes
Three land on every single order. One only shows up if your stock sits. The last one you pay before you have sold anything at all. Here is each one in plain English before you get into the numbers.
03 — reference tables
Current Amazon Australia rates, for when you want to check a number by hand. Every figure here excludes GST, the way Amazon publishes them. The US rates are built into the calculator above, referral in the category dropdown and fulfilment in the size and weight one.
This is Amazon's commission. It is charged on the total sale price including shipping, not just the item, and the rate depends on your category.
Swipe the table sideways →
| Category | Referral fee | Notes |
|---|---|---|
| Video game consoles | 6% | Lowest standard rate on the schedule |
| Base equipment power tools | 7% | Flat rate |
| Major domestic appliances | 7% | Flat rate |
| Consumer electronics | 8% | Flat rate, no price break |
| Home & kitchen appliances | 8% | Flat rate |
| Beauty, health & personal care | 8% / 13% | 8% at or under $20, 13% above $20 |
| Grocery & gourmet | 8% / 10% | 8% at or under $20, 10% above $20 |
| Baby products | 8% / 11% | 8% at or under $20, 11% above $20 |
| Computers | 8% / 6% | 8% on the first $150 of price, 6% above it |
| Tyres | 9% | Flat rate |
| Video games & gaming accessories | 9% | Flat rate. Consoles are lower, at 6% |
| Alcoholic beverages | 10% | Flat rate |
| Clothing & accessories | 10% / 13% | 10% at or under $20, 13% above $20 |
| Pet products | 10% / 13% | 10% at or under $20, 13% above $20 |
| Tools & home improvement | 10% / 13% | 10% at or under $20, 13% above $20 |
| Automotive & powersports | 10.5% | Flat rate |
| Lawn & garden | 10.5% | Flat rate |
| Business, industrial & scientific supplies | 11% | Flat rate |
| Musical instruments & AV production | 11% | Flat rate |
| Furniture | 12% | Flat rate |
| Toys & games | 12% | Flat rate |
| Watches | 12% / 8% | 12% at or under $50, 8% above $50 |
| Home & kitchen (general) | 13% | The default most DTC home and lifestyle brands fall into |
| Office products | 13% | Flat rate |
| Luggage | 13% | Flat rate |
| Sports & outdoors | 13% / 12% | 13% at or under $200, 12% above $200 |
| Electronics accessories | 13.5% | Flat rate |
| Shoes, handbags & sunglasses | 14% / 10% | 14% at or under $50, 10% above $50 |
| Media (books, DVD, music) | 15% | Plus a flat $1.00 closing fee per unit |
| Jewellery | 15% / 5% | 15% on the first $200 of price, 5% above it |
| Everything else | 15% | The catch-all rate for anything not in a named category |
This is the fee that catches most founders. It is based on the size and weight of the box, not the value of what is inside it. A $60 candle in a big box costs more to fulfil than a $60 jacket in an envelope. The ranges below are the standard rate. Anything priced under $13 pays a reduced rate, which is 91 cents lower on every tier.
Swipe the table sideways →
| Size tier | Max dimensions | Max weight | Fee (AUD, ex GST) |
|---|---|---|---|
| Small envelope | 20 × 15 × 1 cm | 75 g | $4.55 |
| Standard envelope | 33 × 23 × 2.5 cm | — | $4.58 – $5.61 |
| Large envelope | 33 × 23 × 5 cm | — | $6.78 – $8.29 |
| Standard parcel | 45 × 34 × 20 cm | 12 kg | $7.34 – $13.93 |
| Small oversize | 61 × 46 × 46 cm | — | $9.94 – $10.68 |
| Standard oversize | 105 × 60 × 60 cm | — | $12.30 – $16.43 |
| Large oversize | Over 105 × 60 × 60 cm | — | $14.71 – $34.00+ |
Charged monthly per cubic metre your stock takes up in Amazon's warehouse, sold or not. Rates go up around 40% from October to December.
Swipe the table sideways →
| Period | Standard size | Oversize |
|---|---|---|
| January – September | $37.00 / m³ | $34.20 / m³ |
| October – December (peak) | $51.80 / m³ | $48.00 / m³ |
If stock sits unsold for more than 271 days, Amazon adds the aged inventory surcharge on top of normal storage. It is assessed on the 15th of each month.
Swipe the table sideways →
| Days in storage | Surcharge |
|---|---|
| 271 – 300 days | $155 / m³ |
| 301 – 330 days | $175 / m³ |
| 331 – 365 days | $185 / m³ |
| 366+ days | $370 / m³, or $0.12/unit, whichever is higher |
Amazon's Partnered Carrier Program charges a flat $4.99 excluding GST per box, from an eligible Australian postcode to any Australian fulfilment centre, whatever the distance. Three boxes from Perth to Sydney is $14.97 plus GST. It is almost always cheaper than booking your own courier for small volumes, and it is the default in the calculator above.
The US works differently. Amazon does not publish a partnered carrier rate card there, you get quoted at the point you build the shipment, and sellers commonly report somewhere around $6 to $10 a box. Standard-size items can also attract an inbound placement service fee of roughly 20 to 70 cents a unit, which you avoid only by sending stock the way Amazon asks, split across multiple fulfilment centres or in five or more identical cartons. Extra-large items are exempt from it. Once you are moving pallets, an LTL freight quote will beat both, so use your own number in the calculator instead of the default.
04 — no dimensions yet?
You do not need a finished product or a freight quote to check whether the numbers work. You need one similar product already selling on Amazon. Here is how to get its exact shipping profile in about five minutes.
Search the way your customer would, on amazon.com.au if you are pricing for Australia or amazon.com if you are pricing for the US. You want something close to your product in type and rough size. You are not copying the listing, only borrowing its shipping profile.
Example, searching a comparable product
Open the listing and look at your browser's address bar. The 10-character code straight after /dp/ is the ASIN. It is also listed under Product Information further down the page if that is easier.
Example, ASIN highlighted in the URL
Open Amazon's FBA Revenue Calculator and search by that ASIN. It fills in the package dimensions, weight and size tier automatically, from Amazon's own data.
Keep the borrowed dimensions and weight. Change the price to what you plan to sell at, and the costs to your actual landed cost per unit. Then bring the fulfilment fee back to the calculator above to see margin after fees, freight and tax as well.
Run the same numbers through two other similar products before you trust the result. One listing can have unusual packaging. Three gives you a reliable range.
05 — next step
Send me your category, your rough sale price and your landed cost. I will run it through both marketplaces and send back your actual margin per unit, plus the one lever I would pull first.
Amazon revised its US fees three times in 2026 alone. Leave your email and I will send the updated rates when they move. No spam, unsubscribe any time.
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