Enter your product details and see your true net profit, margin and ROI - after every Amazon fee is accounted for. No spreadsheets, no guesswork.
Profit Margin
42.8%
ROI
178%
Amazon charges this
01Referral fee = Selling price × Category rate
Amazon takes a percentage of every sale depending on your product category. General merchandise is 15%; electronics and groceries drop to 8%; apparel runs to 17%. It is calculated on the selling price before any other cost.
Size and weight based
02Billable weight = max(unit weight, L × W × H ÷ 139) Tier = f(longest side, median side, shortest side, billable weight)
The fulfillment fee covers pick, pack and ship from Amazon's warehouse. Small Standard starts at $3.06, Large Standard at $4.51, Large Bulky at $9.61. A light product in a bulky box is billed on the box, not the scale.
Volume based
03Cubic feet = L × W × H ÷ 1728 Storage = cubic feet × monthly rate
Amazon charges for every cubic foot your inventory occupies. Off-peak is $0.78 per cubic foot per month; October through December it is $2.40 - three times more, and a critical variable when planning a holiday inventory build.
Your bottom line
04Net profit = Selling price − all costs and fees Margin = Net profit ÷ Selling price ROI = Net profit ÷ Total investment
Total investment covers product cost, shipping, prep and other costs - but not Amazon's fees, since those are deducted from revenue rather than paid up front. ROI tells you the return on money you actually put in.
Advertising is the largest cost this calculator leaves out, and on most accounts it is the third-largest line after the referral and fulfillment fees. Returns, long-term storage, removals, coupons and account-level charges are also outside a per-unit fee estimate. Together they are usually the gap between a modelled profit figure and what the settlement report pays you.
This page stops at what Amazon deducts from a sale. Once you know that, the next question is whether what remains is enough to run a business on - margin, ROI, and a judgement on the product. That is the job of the FBA profit and margin calculator.
Most sellers lose margin to inefficient ads, weak listing conversion and fees they never see coming. Xneeti's AI runs your account every hour - ads, creatives, inventory, payouts - so profit stays where it belongs.
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It is built for the US marketplace and uses Amazon's published US fee tables - referral percentages by category, FBA fulfillment tiers by size and weight, and monthly storage per cubic foot. Fees differ on other marketplaces, so for UK, EU, Canada or India estimates you will want marketplace-specific numbers rather than these.
Amazon's real payout carries deductions that vary by account: selling plan fees, returns and refunds, coupons, co-op charges, inventory disposal, reimbursement offsets and more. This gives you an accurate per-unit estimate of the fees that apply to a sale. For full account-level reconciliation - every dollar in and out, including reserves - you need something reading your settlement data directly.
Always the packaged dimensions and the shipped weight, exactly as Amazon would measure the unit arriving at the fulfillment centre. Amazon measures at its own warehouse and assigns the fee tier from what it finds, not from what you declared. Oversized packaging relative to the product is one of the most common ways sellers land in a higher tier than they budgeted for.
By the longest side, the median side, the shortest side and the billable weight. Small Standard covers items within 15 × 12 × 0.75 inches under 12 oz. Large Standard goes up to 18 × 14 × 8 inches at 20 lb. Beyond that you are into Large Bulky and Special Oversize, which carry substantially higher fees. Billable weight is the greater of actual weight and dimensional weight, which is length × width × height divided by 139.
Ad spend is not a fixed per-unit fee - it moves with your ACoS and conversion rate - so it is not built in. To account for it, put your estimated ad cost per unit sold into the Other costs field: total PPC spend divided by units sold, including organic units. That single number is usually the difference between a product that looks profitable and one that is.
Most experienced sellers target 20-30% net before PPC and 10-20% after. Below 10% net there is very little room to absorb returns, price cuts or a fee increase. ROI above 100% - doubling your money per unit - is considered strong in most categories, though the right number varies a lot by niche, competition and how aggressively you are buying traffic.
Only if you tell it to. Amazon calculates and remits marketplace facilitator tax in most US states, so for the majority of sellers this should stay at zero. The field exists for the cases where the tax is genuinely a cost you carry. If you enter a percentage, it is deducted as a cost like any other.