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Ecommerce Utility • 100% Free & Client-Side

Amazon FBA Fee & Profit Margin Calculator

Calculate Amazon FBA fulfillment fees, category referral fees, net profit margin, and break even selling price privately in your browser.

✓ Zero Server Uploads
✓ Runs 100% in Browser
✓ No Account or Login Required
✓ 1,000ms LocalStorage Autosave
Interactive Tool Ready · Client-Side Memory Active
100% Local
Need an ephemeral scratchpad to organize your calculations? Open the Olevx Private Notepad (Zero Login) →

Calculation Formula

Computes Referral Fee = Selling Price * Category Rate, Total Costs = COGS + Inbound Freight + Referral Fee + FBA Fulfillment Fee + Monthly Storage, Net Margin % = (Net Profit / Selling Price) * 100, and Break Even Selling Price = (COGS + Inbound Freight + Fulfillment + Storage) / (1 - Referral Rate).
Disclaimer: Estimates only for educational and planning purposes; not certified financial, tax, or legal advice. Please consult a qualified professional before executing financial commitments.

How to Use the Amazon FBA Fee & Profit Margin Calculator

  1. 1 Enter your target Amazon selling price, product COGS, and inbound shipping cost per unit to the FBA warehouse.
  2. 2 Select your product category (Electronics 8%, Apparel 17%, Home & Kitchen, Books, or General 15%) to set the exact referral fee rate.
  3. 3 Choose the unit FBA size tier (Small Standard $3.22, Large Standard $3.86, or Oversize $9.73) and enter optional monthly storage cost.
  4. 4 Review real time net profit, margin percentage, and algebraic break even selling price, then export the breakdown to Olevx Notepad.

Methodology & Algorithmic Standards

Computes Referral Fee = Selling Price * Category Rate, Total Costs = COGS + Inbound Freight + Referral Fee + FBA Fulfillment Fee + Monthly Storage, Net Margin % = (Net Profit / Selling Price) * 100, and Break Even Selling Price = (COGS + Inbound Freight + Fulfillment + Storage) / (1 - Referral Rate).

Frequently Asked Questions

How much are standard Amazon referral fees by category? ▼

Standard Amazon referral percentages apply to the total sale price, including Electronics at 8%, Home & Kitchen, Books, and General categories at 15%, and Apparel at 17%.

What are the baseline FBA fulfillment size tier fees? ▼

This calculator models three baseline fulfillment tiers: Small Standard at $3.22, Large Standard at $3.86, and Oversize at $9.73 per shipped unit, plus an optional monthly inventory storage cost.

How is the Amazon break even selling price calculated? ▼

Because Amazon referral fees scale as a percentage of revenue, the exact break even price divides all fixed per-unit costs (COGS, inbound shipping, FBA fulfillment, and storage) by (1 minus the category referral fee rate).

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