Amazon FBA Revenue, Fee & Net Margin Calculator
Audit Amazon 15% Referral Fees, FBA Fulfillment Pick & Pack costs, Customs Duties, and Sponsored Products PPC CAC before sourcing inventory.
1. Product & Expense Inputs
Net Profit Per Unit
$10.54
Margin: 17.57%
Break-Even Selling Price
$47.59
ROI: 21.32%
Expense Distribution Breakdown
How do I use Amazon FBA Revenue, Fee & Net Margin Calculator?
Start with the Amazon FBA default preset ($59.99 retail, 15% Referral Fee, $7.25 FBA fulfillment fee).
Input your target Buy Box Selling Price and factory Cost of Goods Sold (COGS).
Verify the Amazon Referral Fee % for your category (15% for most categories, 8% for electronics, 17% for apparel) and enter your FBA Pick & Pack fee in the Shipping / Fulfillment field.
Add your average Amazon PPC cost per order (Ad Spend CAC) and Section 301 / import tariff rate to calculate Net Profit, Net Margin %, and ROI %.
What features does Amazon FBA Revenue, Fee & Net Margin Calculator offer?
Pre-loaded with standard Amazon US 15% Referral Fee and FBA Small/Large Standard fulfillment costs
Computes both Net Margin % (for Buy Box pricing) and Inventory ROI % (for cash-flow planning)
Models import tariffs and customs duties as a percentage of factory COGS
Visualizes how Amazon Referral Fees, FBA Fulfillment, and PPC Ad Spend split your revenue
1-Click CSV export for wholesale and private-label sourcing spreadsheets
100% Client-Side privacy — confidential ASIN sourcing numbers are never uploaded
How are Amazon FBA Profit Margin, ROI, and Break-Even ACOS calculated?
Amazon FBA sellers pay two primary fees to Amazon on every unit sold: a percentage Referral Fee based on retail price (typically 15%) and a fixed per-unit FBA Fulfillment Fee based on dimensional weight and size tier.
Net Profit = Price − (Price × Referral Fee %) − FBA Fulfillment Fee − Landed COGS − PPC Spend per UnitSeparates the variable 15% Amazon Referral Fee from the weight-based FBA pick-and-pack fee.
Break-Even ACOS % = Pre-Ad Net Margin % = ((Price − Referral Fee − FBA Fee − Landed COGS) ÷ Price) × 100If your pre-ad profit margin is 35%, any Sponsored Products campaign running below 35% ACOS generates incremental net profit.
| Amazon Cost Component | Typical Range | Calculator Input Field | Rule-of-Thumb Target |
|---|---|---|---|
| Amazon Referral Fee | 8% – 17% (15% standard) | Platform Fee (%) | Fixed by Amazon category |
| FBA Pick & Pack Fee | $3.22 (Small) – $7.25+ (Large Standard) | Shipping / Fulfillment ($) | Keep under 15% of retail price |
| Landed COGS + Tariffs | 15% – 25% of retail price | COGS ($) + Import Duty (%) | Target ≥ 4x markup from factory |
| Amazon PPC (TACoS) | 10% – 20% of total revenue | Ad Spend CAC ($) | Keep TACoS below half of pre-ad margin |
How is Amazon FBA Revenue, Fee & Net Margin Calculator used in real-world workflows?
Follow-the-Rule-of-Thirds Sourcing Validation
Validate whether a prospective Alibaba product meets the classic Amazon Rule of Thirds (1/3 Amazon Fees, 1/3 Landed COGS + PPC, 1/3 Net Profit) before ordering inventory.
Rapid Buy-List ROI Screening
Check whether wholesale distributor unit costs leave at least a 30% ROI and 15% Net Margin after Amazon's 15% referral cut and FBA inbound/outbound fees.
Frequently Asked Questions about Amazon FBA Revenue, Fee & Net Margin Calculator
What is the difference between Amazon Referral Fees and FBA Fulfillment Fees?
The Amazon Referral Fee is a percentage commission (usually 15% of the retail price) charged simply for selling on the Amazon marketplace. The FBA Fulfillment Fee is a flat dollar fee per unit ($3.22 to $8.00+ for standard-size items) that covers warehouse receiving, picking, packing, Prime shipping, and customer service.
Where do I enter the FBA Fulfillment Fee and Monthly Storage Fee?
Enter the per-unit FBA Pick & Pack Fulfillment Fee into the 'Shipping / Fulfillment ($)' input field, and enter the Referral Commission (15%) into 'Platform Fee (%)'.
How do I find my Break-Even ACOS for Amazon Sponsored Products?
Set Ad Spend CAC to $0 temporarily and read the resulting Net Margin %. That percentage is your exact Break-Even ACOS—if your pre-ad Net Margin is 38%, you break even on paid ads at 38% ACOS.
Why do Amazon FBA sellers track both Net Margin and ROI?
Net Margin protects you against price drops and PPC volatility, while ROI tells you how fast your inventory capital compounds. A 20% Net Margin with a 60%+ ROI allows you to reorder and double inventory volume every two turns.
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