FBA Revenue Calculator: Amazon Fees and Profit Guide

The FBA revenue calculator is a free tool that turns your price, units and Amazon fees into a monthly profit estimate. It subtracts referral fees, fulfillment fees, storage, advertising and product costs from your sales, so you see what each sale really earns. It also tells you how many units you must sell each month to break even.

Every result is an estimate, not a promise.

FBA Revenue Calculator Overview

Category	Details
Calculator Type	Amazon FBA seller profit estimator
Main Purpose	Estimate monthly and yearly profit after Amazon fees
Main Inputs	Price, product cost, units, ads, referral fee, FBA fee, storage
Main Output	Profit, margin, return on cost, and break-even units
Currency	US dollars
Accuracy	Estimate only; fees depend on size, weight, and category
Best For	Amazon sellers, product researchers, and new brands

What Is an FBA Revenue Calculator?

An FBA revenue calculator estimates what a product earns after Amazon takes its fees. It multiplies your price by the units you sell, then subtracts referral fees, FBA fees, storage, ads and product costs.

Sales are not profit. That is why the calculator shows every cost line in a breakdown table, because a high-selling product can still lose money after fees.

Who Should Use the FBA Revenue Calculator?

People use it for different planning goals.

• New sellers can test a product idea before buying stock.
• Established sellers can check margins after a fee change, since a new schedule can shrink a thin margin overnight.
• Product researchers can compare several ideas on the same basis and screen out the ones with thin margins.
• Agencies can set realistic profit targets for client brands.

How to Use the FBA Revenue Calculator Step by Step

Using the FBA revenue calculator takes three steps: enter your numbers, read the results, then check the table to see how each figure is worked out.

Step 1: Enter your product and Amazon fee details

Start with your selling price, product cost and shipping cost to Amazon. Add your monthly units, ad spend, referral fee and FBA fee, then your storage fees and selling plan.

Step 2: Read your estimated FBA profit

The large number shows your estimated monthly profit after every fee. Below it, you see Amazon fees, product costs, advertising, profit per unit and margin. For instance, 300 units at $25 leave about $2,015 profit each month.

Step 3: Check the breakdown table

The breakdown table shows how each figure is worked out. For example, the FBA fee of $5 across 300 units costs $1,500. Each row shows the sum behind the number, so errors are easy to spot.

How the FBA Revenue Calculator Works

The calculator goes from price to profit in five steps.

• First, enter your selling price, product cost, and shipping to Amazon.
• Next, enter your monthly units sold and your advertising spend.
• Then, add your referral fee, FBA fee and storage fees, checking each one against your Seller Central listing.
• After that, pick the Amazon selling plan that you currently use.
• Finally, read your profit, margin, return on cost and break-even units, and compare them with your target margin.

FBA Revenue Calculator Inputs

Each input does a different job, as the table shows.

Input	Meaning	Why It Matters
Selling price	Price a customer pays for one unit	Drives your sales
Product cost	What you pay for one unit	Your largest cost in most cases
Shipping to Amazon	Inbound shipping for each unit	Often forgotten in estimates
Units sold	Units sold each month	Scales sales and fees
Ad spend	Advertising as a share of sales	Reduces your profit
Referral fee	Percentage Amazon keeps from each sale	Varies by category
FBA fee	Fulfillment fee for each unit	Depends on size and weight
Storage fees	Monthly inventory storage cost	Rises with stock held
Selling plan	Individual or Professional plan	Changes your fixed fees

Price and units set your sales. The fee inputs set how much Amazon keeps, which makes accurate fee amounts the most important input of all.

Amazon Seller Fees at a Glance

Amazon publishes several fees that sellers using FBA may pay.

Fee	What Amazon States
Individual plan	$0.99 per item sold
Professional plan	$39.99 per month
Referral fee	5% to 45% by category; most between 8% and 20%
Minimum referral fee	Typically $0.30 per item
FBA fulfillment fee	Based on product weight and size
Storage fee	Monthly, based on cubic feet; seasonal rates apply
Other FBA fees	Aged inventory, returns processing, removal, inbound placement

Check Amazon’s current fee pages before you rely on any estimate. Fee schedules can change several times a year.

FBA Revenue Formula

The FBA revenue formula subtracts every fee and cost from your product sales.

The diagram below shows each formula step in the right order.

• First, product sales equal your selling price times the units sold.
• Next, the referral fee equals sales times your referral percentage.
• Then, FBA fees equal units sold times your fulfillment fee.
• After that, advertising equals sales times your ad spend percentage.
• Also, product costs equal units times product cost plus inbound shipping.
• In addition, storage and plan fees come from your own inputs.
• Finally, monthly profit equals sales minus all fees, ads, and costs.

FBA Revenue Calculator Example

Suppose a product sells for $25, costs $6 to make and about $1 to ship to Amazon. The seller moves 300 units a month.

• First, product sales come to $7,500 for the whole month.
• Next, a 15% referral fee takes $1,125 from those sales.
• Then, a $5 FBA fee on 300 units adds $1,500.
• After that, advertising at 10% of sales costs the seller $750.
• Storage and the Professional plan add about $70.
• Finally, product and shipping costs are $2,040, leaving about $2,015 profit.

That is a margin of about 27%, or about $7 per unit. The product breaks even at roughly eleven units a month.

What Changes Your Real FBA Profit

Real FBA profit drifts away from the estimate for several reasons.

• Size and weight changes can move your FBA fee tier.
• Advertising costs often rise on new or competitive listings.
• Storage rates can increase in the fourth quarter.
• Returns and damaged units eat into sales and margins.
• A competitor’s price drop can cut your sales quickly.
• Long-stored stock can trigger aged inventory charges, and Amazon can update its fees during the year.

FBA Revenue Calculator Estimates vs Actual Profit

Your Seller Central reports will rarely match the estimate exactly. A few known factors explain most of the difference.

Item	Calculator Estimate	Real Report
Sales	Steady units every month	Change with seasons, ranking, and promotions
Fees	Fee amounts you enter	Depend on category, size, weight, and date
Returns	Not included	Reduce revenue and may add fees
Ads	One percentage of sales	Vary by keyword, season, and competition

Treat the result as a planning range, not a promise. Compare it with your Seller Central reports every month, and keep a short log of the differences. Over a few months, that log makes your estimates much sharper.

Common FBA Revenue Calculator Mistakes

Small errors add up. These are the most common ones.

• Treating sales as profit, when fees take a large share.
• Guessing the FBA fee, when size and weight decide it.
• Forgetting that advertising can easily erase a thin margin, or that seasonal storage rates run higher.
• Leaving out inbound shipping and storage, or copying fees from a similar product without checking.
• Assuming steady sales during your first few months.
• Forgetting that every estimate here is before income tax. Tax rules differ by state and country, so ask an accountant.

Tips for Better FBA Estimates

A few habits keep your FBA estimates close to reality.

• Copy exact fees from Amazon for your own product, and save a screenshot of each one.
• Test a low case with half your expected units and a high case with fifty percent more.
• Include advertising costs from day one.
• Add a small cushion for returns and extra fees, and rerun the estimate after every price or ad change.
• Update the inputs each month as your sales change, and recheck Amazon’s fee pages whenever your product dimensions change.

Limits of the FBA Revenue Calculator

No calculator can predict the exact profit for an Amazon product. This one uses the fees and sales you enter, not live Amazon data, and it cannot see ranking changes, reviews or competitor moves.

It also ignores returns, income tax and one-time inventory costs. Compare it with your real Seller Central reports each month.

Related Calculators

Amazon is only one place to sell products and content.

• For example, try our Marginal Revenue Calculator to test price changes.
• Hosts can use the Airbnb Revenue Calculator for rental income.
• Game developers can try the Steam Revenue Calculator for sales.

FBA Revenue Calculator FAQs

How much does it cost to sell on Amazon?

Amazon lists an Individual plan at $0.99 per item sold and a Professional plan at $39.99 a month. Sellers also pay referral fees and, with FBA, fulfillment and storage fees.

What is the Amazon referral fee?

The referral fee is a percentage of the selling price that Amazon keeps. It ranges from 5% to 45%, and most categories fall between 8% and 20%. Also, a minimum fee of $0.30 per item typically applies.

How are FBA fulfillment fees decided?

Amazon bases FBA fulfillment fees on each product’s weight and size, so heavier and larger items cost more. Use the exact fee shown for your item.

Does FBA charge storage fees?

Yes. Amazon charges monthly storage based on the cubic feet your inventory occupies, and rates can rise in November and December. Don’t send more stock than you can realistically sell.

What is a good profit margin for FBA?

There is no single answer, because margins depend on the product, competition and ad spend. The calculator shows your margin and break-even units, which helps you set a sensible minimum price.

Does this calculator include returns and aged inventory fees?

No. It assumes steady sales with no returns or removal charges. Amazon does list aged inventory, returns processing, removal and inbound placement fees, so add those to your product cost or storage input.

Conclusion

The FBA revenue calculator turns price, fees and costs into a clear monthly profit figure. Use it to test products, set prices and plan stock, then check the results against your real Seller Central data.

Fee details come from Amazon’s selling pricing page for new sellers. They also come from Amazon’s guide to FBA fees for sellers. We last checked these sources and figures on October 1, 2026.

This tool gives estimates only, so see our Disclaimer and Tools Policy.

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