You have probably already experienced that slightly dizzying moment: you open your Amazon Seller Central dashboard, sales are showing, everything seems to be going well... and yet, at the end of the month, your bank account does not reflect this enthusiasm. Between the referral fee, FBA fees, storage, and returns, it is easy to sell a lot while earning very little, or even losing money without really realizing it. This Amazon profit simulator exists to save you from this unpleasant surprise: it calculates your actual net profit, product by product, before you even put your listing online.

Amazon has its own way of eating away at your margins, just about everywhere, without ever doing it all at once. The referral fee (between 8% and 15% depending on the category) is the most visible, but it is far from being the only one. There is also the seller plan subscription, fulfillment fees if you are using FBA, and sometimes fees that you only discover by reading the fine print of the billing. If you have ever felt like you "don't know where the money is going" on Amazon, it's not just an impression: it's a reality that many sellers share, especially at the beginning.

The choice between FBA and FBM is never insignificant, and it really deserves some serious thought. With Fulfillment by Amazon, you hand over storage, packaging, and shipping to Amazon: a real time and hassle-saver, but in exchange for fees calculated by weight and volume, plus storage fees that quietly accumulate month after month if your inventory doesn't move well. With Fulfillment by Merchant, you keep control of the logistics, which can lower the Amazon bill, but you also take back all the work, time, and stress that comes with it. There is no absolute right or wrong choice: there is the choice that fits your reality, your cash flow, and your ability to manage the packages yourself.

Using this simulator is simple, but what it reveals can sometimes be surprising. Enter your selling price, your purchase or production cost, your product category, its weight and dimensions, as well as the average return rate you observe or anticipate. The tool then does what no improvised Excel sheet really does well: it adds up all the fees, one by one, to show you what you actually have left in your pocket, and not what you imagined you were earning by simply looking at your selling price.

Let's talk about returns, because that is often the blind spot that hurts the most. A returned product is not just a cancelled sale: it means processing fees, sometimes an unsellable item, and a referral fee that you do not always fully recover. In fashion or footwear, return rates can reach levels that turn an item "profitable on paper" into a product that costs you money every time it goes out and comes back. Ignoring this parameter in your calculation is a bit like driving with your eyes closed on part of the road: it might go well for a while, but not indefinitely.

If you sell on multiple European marketplaces, also keep an eye on VAT and the return habits specific to each country. France, Germany, Italy, or Spain do not have the same rates, nor the same buying behaviors, and a product that is profitable for you in one country may be much less so elsewhere. And don't forget to include your advertising investments (Amazon Ads PPC) in the equation: a sale coming from a paid campaign does not have the same profitability as an organic sale, even with an identical selling price.

This simulator makes the most sense when combined with other calculations essential to your business. A margin calculator allows you to honestly compare your profitability on Amazon with that of your other sales channels, so you know where to focus your efforts. A markup calculator helps you set a starting price that already absorbs all these fees, rather than discovering them after the fact.

Knowing how much you need to sell to simply "break even" is not trivial, especially when part of your stock is sitting in an Amazon warehouse. A break-even calculator gives you that concrete number, taking into account your net margin after Amazon fees, not your theoretical gross margin which only tells part of the story.

And if you are putting money into PPC campaigns, you deserve to know if that money is really working for you. A ROI calculator answers this question, campaign by campaign, without relying solely on the number of clicks or impressions. If your products first transit through a dropshipping supplier before reaching Amazon warehouses, a dropshipping profit calculator completes the picture by integrating this extra link into your cost chain.

Before giving in to the temptation of a promotion or an Amazon sales event to drive volume, take two minutes to measure its real impact with a discount calculator. Amazon's fixed fees do not go down because you lower your price: they stay firmly put. And if you handle your own logistics through FBM, a shipping cost calculator prevents you from underestimating what each package you ship yourself actually costs.

Finally, it must be said clearly: depending solely on Amazon means depending on rules and fees that you do not control. Developing your own online store in parallel, less subject to these referral fees, remains one of the best safety nets for a seller. An AI chatbot dedicated to increasing average order value and a well-designed product recommendation tool can help you build this alternative channel, at your own pace, without putting all your eggs in one basket.