Before you buy a single unit, you need to know one number: how much money is left after Amazon takes its fees. An Amazon FBA calculator gives you that answer in seconds. You enter the item price, your buy price and the product size, and the FBA calculator shows referral fees, FBA fees, storage fees, net profit, profit margin and ROI. Sellers use it to validate every product before they buy inventory.
The problem: most FBA calculators online were built for Amazon.com. They ignore VAT, use US fee tables and know nothing about the European Fulfilment Network or Pan-EU. If you sell on Amazon.co.uk, Amazon.de or another European store, those numbers can be wrong by several pounds per unit. This guide explains how Amazon fees work in 2026, shows you how to calculate Amazon FBA fees step by step for the UK and the EU, and compares the Amazon FBA calculator options so you can pick the most accurate one.
How to calculate Amazon FBA fees and profit margin: the quick answer
Every Amazon FBA calculator follows the same basic formula:
Net profit = item price − VAT − referral fee − FBA fulfilment fee − storage fees − other costs − buy price
From there, you calculate the numbers that decide whether you buy:
- Total revenue = selling price minus VAT, multiplied by the units sold
- Profit margin = net profit divided by the total sales price
- ROI (return on investment) = net profit divided by your buy price
- Break-even price = the selling price at which net profit is exactly zero
What counts as a good result? For Amazon FBA, a profit margin of 15 to 20% is usually seen as healthy. Many Amazon sellers also require an ROI of at least 25 to 30% and at least £2 or €2 net profit per unit. Enter conservative estimates for your selling price and costs. It is better to be pleasantly surprised than to sit on stock that loses money.
Amazon fees explained: every cost an FBA calculator should include
Amazon's fee structure has four main parts: your selling plan, referral fees, fulfilment fees and storage fees. On top of that come additional fees that many sellers forget, and your own fulfilment and marketing costs.
1. Selling plan: Individual plan vs Professional plan
In the UK store, the Individual plan has no monthly fee but a per item fee of £0.75 (excl. VAT) for every item sold. The Professional plan costs £25 (excl. VAT) per month, no matter how many units you sell. In the EU stores, the Professional plan costs €39 per month (excl. VAT). If you sell more than 35 units a month, the Professional plan is the cheaper selling plan. It also unlocks bulk listing tools, advertising, restricted categories and reports.
Most FBA calculators leave the subscription fees out because they are fixed costs. For a quick product check that is fine. For your business plan, spread the monthly fee across your expected units sold.
2. Amazon referral fees
Amazon charges a referral fee on every item sold. It is a percentage of the total sales price: the full amount the buyer pays, meaning item price plus any shipping cost and gift wrapping charges, including VAT. If the percentage is lower than the per-item minimum, you pay the minimum instead (£0.25 in the UK, about €0.30 in the EU stores).
Most referral fees are between 8% and 15%, depending on the product category. Examples from the 2026 UK fee schedule:
| Product category | Referral fee (UK store, 2026) |
|---|---|
| Consumer Electronics, Computers | 7% |
| Home Products | 8% up to £20, 15% above £20 |
| Beauty, Health and Personal Care | 8% up to £10, 15% above £10 |
| Clothing and Accessories | 5% up to £15, 10% from £15 to £20, 15% above £20 |
| Pet Clothing and Food | 5% up to £10, 15% above £10 |
| Toys and Games, Kitchen, Sports | 15% |
| Video Games and Gaming Accessories | 15% |
| Business, Industrial and Scientific Supplies | 15% |
| Tools and Home Improvement | 13% |
| Electronic Accessories | 15% up to £100, 8% for the portion above £100 |
Some categories use tiered rates. Automotive, for example, charges 15% for the portion of the total sales price up to £45 and 9% for the portion of the total sales price greater than £45. Furniture, Jewellery and Watches work the same way with other thresholds, so an FBA profit calculator must apply both rates correctly.
The closing fee: Books, music, video and DVDs carry a fixed closing fee per unit on top of the referral fee. Many sellers overlook it because it only applies to media, but for cheap books it can wipe out the whole profit.
Reduced referral fees in 2026: Amazon cut rates in several categories. Clothing and Accessories dropped to 5% for items up to £15/€15, Home Products to 8% for items up to £20/€20, and Grocery and Vitamins to 5% for items up to £10/€10.
3. FBA fulfilment fees
With Fulfillment by Amazon (FBA), you pay a flat fee per unit sold. It covers pick and pack, shipping to the customer and customer service. The fee depends on the size tier, the shipping weight and the store where the item sells. For parcels, Amazon uses the greater of the unit weight and the dimensional weight to set the shipping weight.
Examples from the FBA rate card effective 1 July 2026 (local FBA, per unit):
| Size tier | Shipping weight | UK (£) | Germany (€) | France (€) |
|---|---|---|---|---|
| Light envelope | ≤ 100 g | 2.08 | 2.54 | 3.32 |
| Standard envelope | ≤ 460 g | 2.16 | 2.68 | 3.77 |
| Small parcel | ≤ 400 g | 3.00 | 3.39 | 5.07 |
| Small parcel | ≤ 900 g | 3.04 | 3.40 | 5.79 |
| Standard parcel | ≤ 1.9 kg | 3.48 | 3.95 | 6.44 |
Since 17 April 2026, Amazon adds a 1.5% fuel and logistics surcharge to FBA fulfilment fees in the UK, Germany, France, Italy, Spain and other European stores. An up to date FBA calculator includes it automatically.
Low-Price FBA: Most products priced at or below £20/€20 now qualify for Low-Price FBA rates. A small parcel up to 400 g costs £2.70 instead of £3.00 in the UK. Eligibility is automatic.
4. Monthly storage fees and long term storage fees
Amazon charges monthly storage fees based on the average volume your stock occupies in Amazon's fulfilment centres. In the UK, standard-size products in most categories cost £0.76 per cubic foot per month from January to September and £1.51 from October to December. In the EU stores, the fee is charged per cubic metre and also rises sharply in Q4. For a small item that is only a few pence per unit, but storage costs add up for slow sellers and bulky products.
Two long term storage fees to watch:
- Aged inventory surcharge for units stored longer than 241 days
- Storage utilisation surcharge if your stock covers more than 22 weeks of sales
5. Additional fees and other costs
- Peak season fee: from 15 October 2026 to 14 January 2027, Amazon charges an extra fulfilment fee per unit on FBA orders in the UK and Germany (oversize and Low-Price FBA items are excluded)
- EFN surcharge: if you sell in another European store from stock in Germany, Amazon adds £0.26/€0.26 per unit shipped from German fulfilment centres
- Digital services fee (UK only): Amazon adds 2% on top of most selling fees in the UK store
- VAT on Amazon fees: Amazon charges VAT on its seller fees. VAT-registered sellers can reclaim it, for everyone else it is an extra cost
- Refund administration fee: the lesser of £5.00 or 20% of the referral fee when you refund an order
- Removal order fees, returns processing and low inventory level fees
- Your own costs: inbound shipping to Amazon, prep center fees, packaging, ad spend and other advertising costs
Ad spend is easy to forget in an FBA calculator. If you run Sponsored Products ads, add your average ad spend per unit sold to your costs, otherwise your profit margin looks better than it is.
VAT: the biggest mistake in US-built FBA calculators
In the UK and the EU, the price a customer pays includes VAT. That VAT is not your revenue. On a £24.99 item, £4.17 goes to HMRC (20% VAT), so only £20.82 is revenue. On Amazon.de, 19% VAT means €3.99 of a €24.99 price goes to the tax office.
At the same time, Amazon calculates referral fees on the total sales price including VAT. A US fee calculator that skips VAT will show you almost £4 more profit per unit than you will actually make. That is the difference between a good deal and a loss.
Two more VAT points to check in your fee calculations:
- Buy price net or gross: If you are VAT-registered and buy from wholesalers, use your net buy price. If you buy from consumer shops, the VAT is often not reclaimable, so use the gross price.
- Selling in several EU countries: each store has its own VAT rate. Pan-EU requires VAT registration in every country where Amazon stores your stock. Our comparison of Pan-EU vs EFN explains the options.
Worked example: calculate FBA fees step by step
Let's calculate FBA fees for the same product in the UK and on Amazon.de: a kitchen gadget in the Home Products category, sold for 24.99, weight 350 g, packed as a small parcel. You buy it for 9.00 (net), and inbound shipping plus prep cost 0.40 per unit.
| Cost per unit | UK (£) | Germany (€) |
|---|---|---|
| Item price (total sales price) | 24.99 | 24.99 |
| VAT (20% / 19%) | −4.17 | −3.99 |
| Referral fee (15%, price above 20) | −3.75 | −3.75 |
| FBA fulfilment fee incl. 1.5% surcharge | −3.04 | −3.44 |
| Digital services fee (2%, UK only) | −0.14 | – |
| Monthly storage fees (about 2 months) | −0.08 | −0.08 |
| Inbound shipping and prep | −0.40 | −0.40 |
| Buy price | −9.00 | −9.00 |
| Net profit per unit | 4.41 | 4.33 |
| Profit margin | 17.7% | 17.3% |
| ROI | 49% | 48% |
Amazon's own fees on this product add up to about 7 per unit, and VAT takes another 4. The total costs, including the buy price, are around 16.50. Of a 24.99 selling price, less than a fifth ends up as profit, which is right in the typical FBA profit margin range.
The marketplace matters: the same product sold for €24.99 in France leaves only €2.44 profit, because French FBA fees are much higher (€5.07 for this small parcel). That is why comparing marketplaces before you send stock can double your profit.
How much the 2026 changes matter: Imagine a similar product priced at £19.99 and bought for £7.00. At £19.99 it qualifies for the 8% Home Products referral fee and Low-Price FBA rates (£2.70 plus surcharge). Net profit per unit: £4.75. Without those reduced rates, at 15% and the standard FBA fee, it would be only £3.02. Testing different selling prices in an FBA calculator shows you how much your margin can move.
How to use Amazon's Revenue Calculator
Amazon offers a free FBA calculator: the Revenue Calculator in Seller Central. It helps sellers estimate fees and gives real time cost comparisons between different fulfilment methods. Here is how it works:
- Step 1: Search the product by ASIN, EAN or title. The calculator fills in size, weight and category automatically. If you are not sure what an ASIN is, read our ASIN guide.
- Step 2: Enter your item price and, if you fulfil yourself, your own shipping rates.
- Step 3: Add your costs: buy price, inbound shipping and other costs per unit.
- Step 4: Compare fulfilment methods: FBA and your own fulfilment appear side by side, with estimated revenue, total costs and net profit.
Strengths: it is free, official and uses Amazon's current fee tables. It is the best way to double-check a single existing product.
Limits: you check one product at a time, you switch stores manually, and it shows no sales estimates, Buy Box data or price history. For daily sourcing, where you check dozens of products per hour, that is too slow.
Amazon seller fee calculator vs FBA profit calculator
You will see several names for these tools. An Amazon seller fee calculator only shows what Amazon charges: referral fee, fulfilment fee and storage. An FBA profit calculator goes further and subtracts your own costs, VAT and ad spend to show net profit, profit margin and ROI. For buying decisions you always need the second one, because a product with low Amazon fees can still lose money.
Which FBA calculator is best?
The best FBA calculator is the one that matches your marketplace and your workflow. Here is how the main options compare:
| FBA calculator | Best for | EU VAT | Several stores at once | Price |
|---|---|---|---|---|
| Amazon Revenue Calculator | Checking one product | Partly | No | Free |
| ProfitGo (Chrome extension and app) | Daily sourcing in the UK and EU | Yes, per store | Yes, 8 stores | from €19.95 per month |
| US tools (for example Helium 10) | Amazon.com sellers | No | Limited | Free to paid plans |
ProfitGo is built for European sellers. Its profit calculation is based on Amazon's official Revenue Calculator, but it runs directly on every Amazon product page and in any online shop. You set your fulfilment program (EFN, Pan-EU or Central Europe), whether your buy prices are net or gross, and your target ROI and profit margin once. After that, every product shows Amazon fees, VAT, net profit and ROI instantly, compared across the UK, Germany, France, Italy, Spain, the Netherlands, Belgium and Poland.
The screenshot above shows the same product in ProfitGo and in Amazon's calculator. Read the full ProfitGo Chrome extension guide to see all features. If you mainly scan products in store, a mobile app is more practical. We compare the options in our guide to the best Amazon FBA scanner apps.
FBA vs FBM: compare your fulfilment costs
With Fulfilment by Merchant (FBM), you store, pack and ship orders yourself. You avoid FBA fees and storage fees, but you pay your own shipping rates, packaging and labour. On the Professional plan you set your own shipping rates, the buyer pays the shipping cost, and Amazon passes it to you as a shipping credit. On the Individual plan, Amazon sets the shipping credit for you. Remember that the referral fee is also charged on the shipping amount.
FBA is usually cheaper and faster for small, light products that sell regularly, and Prime helps you win the Buy Box. FBM can be better for heavy, bulky or slow-selling items, where FBA fees and storage costs would eat the profit. Amazon's Revenue Calculator and ProfitGo both compare the two methods for the same product.
How to lower your Amazon FBA fees
- Price smart around thresholds: a price just under £20/€20 can unlock reduced referral fees and Low-Price FBA rates.
- Reduce packaging size: moving from a standard parcel into a small parcel or envelope size tier lowers the fulfilment fee and the shipping weight.
- Keep stock lean: send what sells within a few weeks to avoid high monthly storage fees and long term storage fees, but not so little that you trigger low inventory fees.
- Plan for Q4: storage fees roughly double from October to December, and the peak season fee applies in the UK and Germany.
- Choose your fulfilment program carefully: EFN is simpler, Pan-EU gives you local fees but requires VAT registrations.
- Use Amazon's new seller incentives: new FBA products can get free storage and returns processing through the FBA New Selection programme.
Is Amazon FBA still profitable in 2026?
Yes, for sellers who calculate before they buy. The 2026 fee reductions lowered Amazon FBA fees by an average of £0.15/€0.17 per unit in the European stores, and Low-Price FBA now covers most products up to £20/€20. At the same time, the fuel surcharge and the peak season fee add costs. Profit with Amazon FBA depends less on the fee structure and more on your buying decisions: the right products, at the right price, with accurate fee calculations. Our guide on how much it costs to start Amazon FBA arbitrage shows how much capital you need.
To find profitable products in the first place, read our guides to online arbitrage, retail arbitrage and wholesale on Amazon.
Frequently asked questions
How can I estimate FBA fees for my product?
Use an Amazon FBA calculator. Enter the item price, product category, size and shipping weight. The calculator adds the referral fee, the FBA fulfilment fee and storage fees. For accurate results in the UK and EU, make sure it also deducts VAT and includes the 2026 surcharges.
How much does Amazon FBA cost in the UK?
It depends on size and weight. In 2026, a small parcel up to 400 g costs £3.00 in FBA fulfilment fees in the UK, plus the 1.5% surcharge. On top come the referral fee (usually 8 to 15%), monthly storage fees and the £25 Professional plan. For a typical £25 product, Amazon fees add up to around £7 per unit.
How do I calculate my Amazon seller fees in the UK?
Add the referral fee (a percentage of the total sales price including VAT, minimum £0.25), the selling plan fee, the FBA or shipping costs, storage fees and the 2% digital services fee. Amazon's Revenue Calculator and ProfitGo both do this automatically.
How much does Amazon charge for fees?
Most Amazon sellers pay between 25% and 35% of the item price in Amazon fees when they use Fulfillment by Amazon. That includes the referral fee and the fulfilment fee. VAT comes on top of that in the UK and EU.
Which FBA calculator is best?
For checking one product, Amazon's free Revenue Calculator. For daily sourcing in the UK and EU, a tool like ProfitGo that calculates VAT and fees per store and works directly on product pages.
How much can a beginner make selling on Amazon?
That depends on budget, time and product choice. Many beginners start with a few hundred pounds or euros and aim for £2 to £5 net profit per unit at an ROI of 30% or more. Always run every product through an Amazon FBA calculator before you buy.
Conclusion
An Amazon FBA calculator is only as good as the fees it knows. For UK and EU sellers, that means VAT, the 2026 fee tables, Low-Price FBA and the new surcharges. Use Amazon's Revenue Calculator to double-check single products, and a tool like ProfitGo when you need accurate numbers for dozens of products a day.
Try ProfitGo free for 14 days and see your real profit on every Amazon product page.
