Amazon FBA Fee Calculator
Calculate Amazon FBA fees including referral fee and fulfillment fee to find your net profit.
Results
Visualization
How It Works
The Amazon FBA Fee Calculator helps sellers understand exactly how much Amazon takes from each sale. Amazon charges a referral fee (typically 15% of the sale price) plus a fulfillment fee based on your product's weight and size tier. Knowing these numbers upfront is essential for pricing products profitably.
The Formula
Variables
- SP — Sale Price — the price the customer pays on Amazon
- PC — Product Cost — your cost to source or manufacture the item
- RF — Referral Fee — 15% of sale price (varies by category, 8–20%)
- FF — Fulfillment Fee — Amazon's pick, pack, and ship charge based on weight and size
- SF — Storage Fee — monthly fee to store inventory in Amazon's warehouse
Worked Example
A seller lists a kitchen gadget for $29.99 with a product cost of $8.00 and weight of 1.2 lbs (standard size). The referral fee is $4.50 (15%), the fulfillment fee is $3.58, and storage runs about $0.75/month. Total Amazon fees are $8.83, leaving a net profit of $13.16 — a 43.9% margin and 164.5% ROI on cost.
Practical Tips
- Keep your product weight under 1 lb when possible — fulfillment fees jump noticeably at each weight tier.
- A 15% referral fee is the standard for most categories, but electronics can be as low as 8% — always check your specific category.
- Target a minimum 30% margin after all fees to account for returns, promotions, and ad spend.
- Standard-size products (under 18x14x8 inches, under 20 lbs) have significantly lower fulfillment fees than oversize items.
- Factor in Amazon PPC ad costs — most successful sellers spend 15–30% of revenue on advertising, which can eat into margins.
Frequently Asked Questions
What is Amazon's referral fee?
Amazon's referral fee is a percentage of the sale price charged for every item sold. Most categories are 15%, but rates range from 8% (consumer electronics) to 20% (fine jewelry). The fee applies to the total sale price including any gift wrapping charges.
What does the FBA fulfillment fee cover?
The FBA fulfillment fee covers Amazon picking your item from their warehouse shelf, packing it, shipping it to the customer, and handling customer service and returns. It's charged per unit sold and varies by weight and dimensions.
How does Amazon calculate dimensional weight?
For standard-size items, Amazon uses actual weight. For larger items, they calculate dimensional weight as (length x width x height) / 139 and charge whichever is greater, the actual weight or the dimensional weight.
Are there other FBA fees I should know about?
Yes — beyond referral and fulfillment fees, watch for long-term storage fees (items stored over 365 days), removal fees if you want inventory back, and returns processing fees. These can add up, especially for slow-moving inventory.
How do I improve my FBA profit margin?
The most effective levers are: reduce product cost through better supplier negotiation or higher order quantities, increase sale price by improving listings and reviews, reduce product weight and dimensions to lower the size tier, and minimize storage time by forecasting inventory accurately.