Subtract the referral fee, FBA fulfillment fee, and any additional costs from your sale price to find net profit and profit margin per unit.
Amazon Seller Fee Calculator
Amazon referral fee and FBA (Fulfillment by Amazon) profit per unit, from sale price, cost and fee inputs.
What Goes Into Amazon Seller Costs
Selling on Amazon typically involves a referral fee (a percentage of the sale price that varies by category), plus — for FBA (Fulfillment by Amazon) sellers — a fulfillment fee based on the product’s size and weight, along with optional storage and other costs. This calculator estimates your net profit after these fees, covering searches like Amazon FBA calculator, Amazon seller fee calculator, and Amazon profit margin calculator.
How the Calculator Works
Fee Mode
Formula
Referral fee = Sale price × Category referral rate
Worked Example
A $30 item in a category with a 15% referral rate: Referral fee = 30 × 0.15 = $4.50.
FBA Mode
Formula
Net profit = Sale price − Referral fee − FBA fulfillment fee − Cost of goods − Other costs
Profit margin = (Net profit ÷ Sale price) × 100
Worked Example
A $30 item with a $4.50 referral fee, $6 FBA fee, $8 cost of goods, and no other costs: Net profit = 30 − 4.50 − 6 − 8 = $11.50. Profit margin = (11.50 ÷ 30) × 100 ≈ 38.3%.
Why Referral and FBA Fees Vary So Much
Amazon’s referral fee percentage differs by product category (electronics, apparel, and grocery, for example, are typically taxed differently), and FBA fulfillment fees are based on a product’s size tier and weight, so the same sale price can produce very different fees depending on what and how large the item is — always check your specific category and size tier for an accurate rate.
Frequently Asked Questions
Does this include Amazon’s monthly storage fees?
Only if you enter them under the calculator’s other-costs field — storage fees vary by season and by how much inventory space your products occupy, so they’re not built into the base referral-plus-fulfillment estimate automatically.
Why is my referral fee different from what I expected?
Referral fee percentages vary by product category, and some categories also apply a minimum flat fee regardless of sale price, so confirm your product’s exact category rate on Amazon’s own fee schedule.
Does FBA or self-fulfillment (FBM) cost less overall?
It depends on your product’s size, weight, sales volume, and your own shipping and storage costs — FBA folds fulfillment into a per-unit fee while FBM shifts those costs to you directly, so compare both using your actual numbers rather than assuming one is always cheaper.
Are advertising (PPC) costs part of this profit calculation?
No — this tool covers referral and fulfillment fees against cost of goods; advertising spend is a separate, often variable cost that should be subtracted separately if you run Sponsored Products or other ad campaigns.
What counts as a good profit margin for an Amazon FBA product?
This varies widely by category, competition, and business model, so there’s no single universal target margin — compare your margin against your own required return and category norms rather than a fixed benchmark.
