Amazon FBA Profit Margin Calculator
Instantly calculate your Amazon FBA referral fees, fulfillment costs, storage fees, and net profit. Updated for Amazon's 2026 fee structure.
On a $25 Amazon FBA item with $8 cost of goods and a $4.75 fulfilment fee, Amazon takes $8.50 per unit (15% referral + fulfilment), leaving $8.50 before ad spend and storage. Break even at $15.00.
Quick-start scenarios
Your saved scenarios
Stored in this browser only — nothing is uploaded, and there is no account to create.
Revenue per order
What the buyer pays you for one order.
Costs per order
Costs you pay every time an order ships.
Monthly
Charged monthly, whatever your order volume — kept out of per-order margin.
Amazon FBA settings
How Amazon FBA treats your account, and how often orders come back.
Per order
After Amazon FBA fees, product and shipping costs, and $2.00 of ad spend per order. Monthly plan and storage costs are handled below.
Where your money goes
Per month at 20 ordersMonthly totals
The sale price where one order nets exactly zero — covering percentage fees, per-unit and flat fees, your costs, and this order's share of ad spend.
Needed to cover $79.99 of monthly ad spend and fixed costs. You're planning 20.
Ad economics
An order can pay at most its contribution — revenue after fees and variable costs — to win a customer. Spend more than that and the order is bought at a loss.
You can pay up to $7.08 per order in ads and still break even — currently $2.00.
How Amazon FBA Fees Work
Amazon FBA sellers face one of the most complex fee structures in ecommerce. Between referral fees, FBA fulfillment costs, storage charges, and advertising spend, your true profit can be very different from what your sales dashboard shows.
Amazon's fee structure starts with a referral fee — typically 15% of the sale price — applied to every transaction. Then FBA adds fulfillment fees based on product size and weight, which can range from about $3 to over $10 per item. On top of that, inventory storage fees are charged monthly based on cubic footage, with rates nearly tripling during the Q4 holiday season.
Our Amazon FBA Profit Margin Calculator helps you untangle all these costs. Enter your selling price, cost of goods, FBA fulfillment fee, monthly storage estimate, and ad spend to get an instant profit breakdown. Use the pre-loaded scenarios to compare standard-size versus large items, and see exactly how each fee category impacts your bottom line.
Frequently Asked Questions
What are Amazon's referral fees?+
How are FBA fulfillment fees calculated?+
How much are Amazon FBA storage fees?+
Does this calculator include the 2026 fuel surcharge?+
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Compare across platforms
Same product, different platforms — and very different take-home. See how this scenario stacks up on the other marketplaces, or read the side-by-side fee table.