Question 1

How much does Amazon FBA charge in fees?

Accepted Answer

Amazon FBA fees include referral fees (8-15% depending on category), fulfillment fees ($3-$9+ based on size and weight), storage fees ($0.75-$2.40 per cubic foot monthly), and optional advertising costs. A typical small item might incur $5-8 in total FBA fees.

Question 2

What is the difference between FBA and FBM?

Accepted Answer

FBA (Fulfillment by Amazon) means Amazon stores, packs, and ships your products, charging fulfillment and storage fees. FBM (Fulfillment by Merchant) means you handle shipping yourself, only paying Amazon referral fees. FBA typically costs more but offers Prime eligibility and better conversion rates.

Question 3

How do I calculate my Amazon profit margin?

Accepted Answer

Amazon profit margin = (Selling Price - Product Cost - Amazon Fees - Shipping) / Selling Price × 100. For FBA, include referral fees, fulfillment fees, storage fees, and advertising costs. A healthy margin for FBA sellers is typically 30-50% after all fees.

Question 4

What is a good ACoS for Amazon advertising?

Accepted Answer

A good ACoS (Advertising Cost of Sale) depends on your margins. Generally, aim for 15-30% ACoS. If your profit margin is 40%, an ACoS of 20% leaves you with 20% net profit. High-margin products can tolerate higher ACoS for market share growth.

Question 5

Are Amazon referral fees the same for all products?

Accepted Answer

No, Amazon referral fees vary by category. Most categories charge 15%, but some are lower (8% for electronics, computers, office products) or higher (45% for full-price Amazon Device Accessories). Check Amazon Seller Central for current category-specific rates.

Question 6

How can I reduce Amazon FBA fees?

Accepted Answer

Reduce FBA fees by: 1) Optimizing package dimensions to lower fulfillment fees, 2) Managing inventory to avoid long-term storage fees, 3) Using FBA Small and Light for items under $10, 4) Removing slow-moving inventory, and 5) Negotiating better product costs to maintain margins despite fees.

Question 7

Should I use FBA or FBM for my Amazon business?

Accepted Answer

Use FBA if: you want Prime eligibility, sell high-velocity items, lack fulfillment infrastructure, or want Amazon to handle customer service. Use FBM if: your margins are too thin for FBA fees, you sell oversized/heavy items, you already have efficient fulfillment, or you sell low-volume specialty products.

Question 8

How does this calculator save my data?

Accepted Answer

Your inputs are automatically saved to your browser local storage using the key "calcmatic-amazon-profit". When you return, your previous values are restored. No data is sent to our servers - everything stays private on your device. Click "Reset Saved Data" to clear and start fresh.

Amazon FBA/FBM Profit Calculator

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