Calculate Amazon selling fees, profit and margin easily.
Amazon Fee
Total Cost
Net Profit
Profit Margin
ROI
Breakeven Price
This Amazon Fee Calculator helps sellers estimate their profit after Amazon charges. Amazon takes a referral fee for each sale, and if you use Fulfillment by Amazon (FBA), fulfillment fees also apply. Enter your product price, product cost, and fees to quickly estimate your profit and profit margin before listing your product.
If you sell on Amazon, you already know how confusing the fees are. Referral fee, FBA fee, shipping cost, product cost — by the time you add everything up manually, you have spent 10 minutes on one product and you are still not sure if the number is right. I built this calculator specifically for Amazon sellers who need fast, accurate profit calculations without doing the math by hand every single time. Enter your numbers, get your profit, margin, ROI and breakeven instantly — so you can decide faster and move on.
Five inputs, six outputs. That is all it takes to know whether a product is worth selling.
Selling price — what you charge the customer
Product cost — what you pay your supplier
Shipping cost — sending inventory to Amazon
Referral fee % — Amazon's category commission
FBA fee — storage, packing and shipping by Amazon
Amazon fee — exact referral fee amount
Total cost — everything you spend per sale
Net profit — what you actually keep
Profit margin — profit as % of selling price
ROI — return on your inventory investment
Breakeven price — minimum you can sell for
Being upfront about this makes the tool more useful, not less.
This calculator focuses on your core per-unit costs — product, shipping, referral fee, and FBA fee. It does not include Amazon's monthly Professional seller account fee of $39.99. It does not include storage fees that Amazon charges for inventory sitting in their warehouse — these go up significantly in Q4. It does not include advertising spend like Sponsored Products or Sponsored Brands, which for many sellers is actually the biggest cost after Amazon's own fees. Return processing fees are also not included.
The numbers this calculator gives you are your baseline profit before these extra costs. For a more complete picture, take your monthly ad spend and storage fees, divide by your monthly unit sales, and add that to your per-unit cost manually.
Before you can calculate profit accurately, you need to know what Amazon actually charges you for — and there are two main fees every seller deals with.
Referral fee
This is Amazon's cut for letting you sell on their platform. Every time you make a sale, Amazon takes a percentage of that selling price as their commission. Think of it as the price of access to their massive customer base. The percentage varies by category — it can be anywhere from 8% to 20% depending on what you are selling. Books, electronics, clothing — each category has its own rate.
FBA fee
FBA stands for Fulfilled by Amazon. When you use FBA, you send your products to Amazon's warehouse and they handle everything from there — storing your inventory, packing each order, shipping it to the customer, and dealing with returns. The FBA fee covers all of that. What you pay depends on the size and weight of your product — a small lightweight item costs less than a large heavy one.
Shipping cost to Amazon
This is separate from the FBA fee. Before Amazon can store and ship your products, you have to get your inventory to their fulfillment center first. That shipping cost — from your supplier or your home to Amazon's warehouse — comes out of your pocket and needs to be factored into your profit calculation.
Net Profit — go/no-go decisions
Before sourcing any product, calculate net profit per unit at your target selling price. If it does not clear your minimum threshold after accounting for advertising, reconsider the product or renegotiate the source price.
Profit Margin — compare products
Two products with the same net profit per unit are not equally attractive if they sell at different prices. Margin normalises this comparison — a $5 profit on a $25 product (20%) is better than a $5 profit on a $50 product (10%) because the capital tied up is proportionally less.
ROI — evaluate sourcing decisions
When deciding between products or suppliers, ROI on product cost is the clearest metric. A 100% ROI means you double your money. For Amazon sellers who reinvest profits into inventory, a higher ROI compounds faster.
Breakeven Price — competitive strategy
When a competitor drops their price, your breakeven tells you the floor. Anything above it generates profit. Anything below it loses money. If a competitor prices below your breakeven, the product may not be viable at your current cost structure.
Being honest about limitations makes this tool more useful, not less.
This calculator does not include Amazon's monthly selling plan fee ($39.99 for a Professional account). It does not include storage fees, which Amazon charges per cubic foot of inventory stored in their warehouses and which increase significantly during the fourth quarter. It does not include advertising spend — Sponsored Products, Sponsored Brands, and display ads — which for many categories represents the largest variable cost after Amazon's fees. It does not include return processing fees, which apply when a customer returns an FBA product.
For a complete profitability picture, add your estimated monthly advertising spend divided by monthly unit sales to the per-unit cost, and add average storage fees similarly. The outputs from this calculator represent your baseline profitability before these additional variable costs.
Target a minimum 20% margin before advertising costs
This leaves enough room for ad spend, returns, and occasional price adjustments without pushing you into negative territory.
Verify the current FBA fee for your specific product
Amazon updates FBA fees periodically and the changes can significantly affect profitability for products in certain size tiers. Always check the current fee schedule before listing.
Use breakeven as your floor for promotions
Pricing below your breakeven in a lightning deal or coupon costs you money on every unit sold — which can make sense for launch velocity but should always be a deliberate decision, not an accident.
Check the referral fee for your specific category
The default 15% applies to many categories but not all. Using the wrong rate produces inaccurate results — always verify on Amazon Seller Central before calculating.
Recalculate whenever your costs change
Supplier price increases, new shipping rates, and FBA fee updates all shift your breakeven and margin. A product that was profitable at launch can become marginal without you noticing if you do not recalculate regularly.
It calculates your referral fee, FBA fee, total cost, net profit, profit margin, ROI, and breakeven price. You enter your selling price, product cost, shipping cost, referral fee percentage, and FBA fee — and it does the rest instantly.
It is the commission Amazon charges you for selling on their platform. Every sale you make, Amazon takes a percentage of the selling price. The rate varies by category — anywhere from 8% to 20%. Always check your specific category rate on Amazon Seller Central.
FBA stands for Fulfilled by Amazon. When you use FBA, Amazon stores your products in their warehouse, packs each order, ships it to the customer, and handles returns. The FBA fee covers all of that. What you pay depends on your product's size and weight.
Take your selling price and subtract your product cost, shipping cost to Amazon, referral fee, and FBA fee. What is left is your net profit per unit. This calculator does all of that automatically the moment you enter your numbers.
Most experienced sellers aim for at least 15 to 20% margin before advertising costs. That leaves enough room for ad spend, occasional returns, and price adjustments without going into negative territory.
It is the lowest price you can sell at without losing money. Anything above it is profit, anything below it is a loss. Knowing your breakeven is useful when competitors drop their prices or when you are running a promotion.
ROI tells you how much profit you make relative to what you invested in inventory. A 50% ROI means for every $100 you spend on product, you make $50 in profit. It is a useful number when comparing different products to source.
No — advertising spend is not included because it varies too much between sellers and products. To get a more accurate picture, divide your monthly ad spend by your monthly unit sales and add that amount to your per-unit cost manually.
Yes, the Professional seller plan costs $39.99 per month. This calculator does not include that fee since it is a fixed monthly cost rather than a per-unit cost.
For most sellers, yes. You are paying Amazon to handle storage, packing, shipping, and customer service — which saves significant time. Whether it is worth it depends on your product's margin after the FBA fee is factored in, which is exactly what this calculator helps you figure out.
Written by AtraKit Team
Free browser-based tools — your files never leave your device
Last Updated: June 2026
* This calculator is for estimation purposes. Amazon fee structures, FBA rates, and referral fee percentages change periodically. Always verify current rates directly on Amazon Seller Central before making sourcing or pricing decisions.