Amazon FBA Fee & Profit Margin Calculator
Calculate your Amazon FBA referral fee, fulfillment fee, net profit per unit, profit margin, and ROI.
Fulfillment fee updates to a typical current-tier estimate when you change size tier — overwrite it any time to match your own rate card from Seller Central.
Fulfillment and storage fee defaults are typical current-tier estimates, not a live feed of Amazon's rate card — Amazon updates these at least annually. Always confirm your exact fees in Seller Central > Fees before pricing a real listing; treat this as a planning estimate.
About this tool
How to use it
- Enter the selling price and your cost of goods (COGS) per unit.
- Pick a size tier to auto-fill a typical current fulfillment fee, then overwrite it with your exact fee from Seller Central > Fees if you have it.
- Enter your referral fee percentage (15% covers most categories; check yours if it's electronics, jewelry, or another category with a different rate), your monthly storage fee, and inbound shipping/prep cost per unit.
- Click Calculate Net Profit. Check the margin banner first, then the fee breakdown below it to see exactly where your money is going.
Why it matters
Amazon's fees aren't one number — referral fee, FBA fulfillment fee, and monthly storage fee stack up separately, and it's easy to price a product only against COGS and get blindsided by how much Amazon actually keeps. Seeing the full breakdown before you list (or before you raise ad spend on a listing) tells you whether a 'profitable-looking' price is actually profitable once every fee is accounted for.
When to use it
Before listing a new product, when you're deciding what price actually clears a real profit. When Amazon changes its fee schedule (it usually does at least once a year) and you want to re-check whether an existing listing still works. When you're comparing two potential products and want to see which one nets more per unit, not just which one sells for more.
Good to know
The fulfillment and storage fee defaults shown here are typical estimates for each size tier, not a live feed of Amazon's current rate card — Amazon's actual fees vary by exact dimensions, weight, and category, and change over time. Every fee field is editable specifically so you can replace the estimate with your own real number from Seller Central > Fees before trusting a result for a real pricing decision. Referral fee percentage also varies by category (most are 15%, but some — media, jewelry, electronics accessories — differ), so check yours if it's not a standard category.
Common questions
What is a good profit margin for Amazon FBA?
Most FBA sellers target at least 15-20% net margin after all fees, since Amazon's cut plus ad spend, returns, and price competition all eat into that further. Below 10% leaves very little room for a cost increase or a price war before you're losing money on the unit.
Why is my Amazon fulfillment fee different from what this calculator shows?
Amazon's actual FBA fulfillment fee depends on your product's exact weight and dimensions within its size tier, not just which tier it falls into — this calculator's default is a typical mid-range estimate for the tier you pick. Use your product's real fulfillment fee from Seller Central > Fees for an accurate result.
Does this include Amazon PPC advertising costs?
No — this calculates net profit from Amazon's direct selling fees only (referral fee, fulfillment fee, storage fee) against your cost of goods and shipping. If you run sponsored ads, subtract your average cost-per-sale from the net profit per unit shown here to see your true margin after advertising.
What's the difference between net profit and ROI here?
Net profit per unit is the actual dollar amount left after every fee and cost. ROI on landed cost measures that profit against what you spent to get the product to Amazon (COGS plus inbound shipping) — a $5 profit on a $2 landed cost is a much better ROI than the same $5 profit on a $20 landed cost, even though the dollar profit is identical.