Profit Margin Calculator
For Amazon sellers who want to understand true profitability across all fulfilment methods.
💰 Revenue
📦 Your Costs
📊 Monthly Projection (Optional)
Understanding Your Amazon Profit Margin
Profit margin is one of the most critical metrics for any Amazon seller. But many sellers confuse gross profit, net profit, and markup. Here is a clear breakdown of what each metric means and why it matters.
Profit Margin vs Markup: What Is the Difference?
Profit Margin tells you what percentage of your selling price is profit. If you sell a product for $20 and earn $4 profit, your margin is 20%.
Markup tells you how much you increased the price above your cost. If you paid $10 for a product and sell it for $20, your markup is 100% — even if your actual margin is much lower once fees are deducted.
Many new sellers price based on markup but forget to account for Amazon's referral fee, shipping, and other costs — which is why they often earn far less than expected.
Example: You buy a product for $8 and sell it for $25 on Amazon. At first glance, that looks like a $17 profit (213% markup). But Amazon takes a 15% referral fee ($3.75), you spend $4 on shipping, and $1 on packaging. Your actual net profit is $8.25 — a 33% margin. Still good, but very different from the initial impression.
What Is a Good Profit Margin for Amazon Sellers?
| Margin Range | Rating | What It Means |
|---|---|---|
| 30%+ | Excellent | Strong buffer for advertising, returns, and fee increases |
| 20–30% | Good | Healthy and sustainable for most business models |
| 15–20% | Acceptable | Workable but leaves limited room for ad spend |
| 10–15% | Tight | Vulnerable to fee changes or increased competition |
| Below 10% | Risky | One fee increase or return surge can eliminate profit |
Frequently Asked Questions
With FBM (Fulfilled by Merchant), you handle all shipping yourself — so you pay your own shipping rates but do not pay FBA fulfillment fees. With FBA, Amazon handles shipping and customer service, which costs more in fees but often results in better sales velocity due to Prime eligibility. This calculator covers both approaches — simply enter your actual shipping cost in the shipping field.
For sellers in the US marketplace, Amazon's referral fees shown in our calculator are based on US rates and do not include VAT. If you are selling on Amazon's European or UK marketplaces, fees and VAT treatment will differ. This calculator is designed for the US Amazon marketplace (amazon.com).
The most effective ways to improve your margin are: (1) negotiate lower COGS with your supplier, (2) optimize your product size/weight to qualify for a lower FBA fee tier, (3) increase your selling price through better branding and photography, (4) reduce your advertising ACoS, and (5) minimize returns through better product descriptions and quality control.