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  • Writer's pictureBrian Cummings

Understanding Amazon's Commingled Inventory System

Getting to grips with Amazon's Commingled Inventory system is essential for sellers aiming for efficiency and simplicity in managing their stock.

This system mixes your products with identical items from other sellers, which can make shipping faster. However, understanding the risks and benefits is key to making it work for your business.

If the term 'commingled' has you scratching your head, worry not. Our complete guide will clarify how this process works and whether it's the right choice for you.

Want to learn more? Read on for all the details you'll need to navigate Amazon's commingled inventory with confidence.

Key Takeaways

  • Commingled inventory lets different sellers' same products mix in Amazon's warehouses. This means faster shipping but risks fake items.

  • Protect your brand from fakes with tools like Amazon Project Zero and Brand Registry. Use manufacturer barcodes for safer tracking.

  • Stickerless, commingled inventory saves time and money on labeling. But it makes it harder to watch stock levels and protect quality.

  • If you sell using FBA, mixing your stuff with others can harm your reputation if fakes slip in. Stay sharp and keep good records.

  • Avoiding commingled inventory helps control over what you sell on Amazon. It stops fake items from hurting your business and trust with customers.

Understanding Amazon's Commingled Inventory System

Commingled inventory means mixing products from different sellers together in Amazon's warehouses. Sellers who use FBA, or Fulfillment by Amazon, can choose this option. This system uses barcodes to sort items instead of keeping each seller's goods separate.

When a customer orders a product, Amazon picks it from any of the mixed batches.

In commingled inventory, your products sit alongside identical ones from other businesses. They all share the same barcode for virtual tracking. You send items to Amazon without individual labels if they already have a manufacturer barcode.

Then Amazon fulfills orders for these products from any available stockpile making sure shipping happens fast and efficiently.

Using this method saves time on labeling and can speed up sending your goods out for delivery. It relies on barcodes that match exactly to prevent mix-ups between authentic products and possible counterfeits.

This way, customers get what they ordered regardless of which seller actually provided the item stocked at the warehouse.

Another common problem Amazon sellers have to deal with is stranded inventories. Read on how to manage them by reading our guide.

How Does Commingled Inventory Work?

Amazon's commingled inventory system involves mingling identical products from different sellers in Amazon's fulfillment centers.

Why Does Amazon Use It?

Amazon uses commingled inventory to streamline the logistics process. This helps to reduce the time and effort needed to sort, label, and store individual seller's items.

It also allows for faster shipping times as products are sourced from the nearest fulfillment center, benefitting both Amazon and customers.

Commingled inventory system ensures efficient use of storage space, reducing overall costs for Amazon, which can be passed on to sellers through lower fees.

This approach fosters a more unified inventory pool that simplifies order fulfillment. Amazon optimizes its warehouse operations while maintaining quality control by standardizing similar items from different sellers into one collective supply of goods.

Therefore, it enables a smoother flow of goods within the vast network of Amazon’s Fulfillment Centers.

Impact on FBA Sellers

Due to commingled inventory, FBA sellers face the risk of receiving and shipping counterfeit products. It affects your brand's credibility and can lead to an account suspension if customers receive inauthentic items.

The difficulties in tracking inventory also make it challenging to maintain accurate stock levels, potentially resulting in lost sales opportunities when products are out of stock.

The impact on branding and marketing efforts is also significant, making it hard for customers to distinguish your authentic products from counterfeits. Additionally, the system can affect pricing strategies and customer trust in your brand.

Pros and Cons of Commingled Inventory


Stickerless, commingled inventory offers several advantages for Amazon sellers:

  1. Improved Efficiency: Streamlines the fulfillment process and reduces time spent on labeling and sorting products.

  2. Cost Savings: Eliminates the need for additional packaging and labeling materials, saving on operational expenses.

  3. Enhanced Customer Experience: Speeds up order processing and delivery times, leading to higher customer satisfaction.

  4. Flexibility in Storage: Products can be stored more efficiently without the need for designated spaces based on individual seller labels.


Risk of having counterfeit products

Counterfeit products can enter the commingled inventory system, increasing the risk of unwittingly selling fake items. This can damage your reputation and lead to severe consequences, including account suspension.

As an FBA seller, it's crucial to monitor your inventory closely and take steps to protect the authenticity of your products.

To mitigate this risk, consider enrolling in Amazon's Brand Registry Program or using manufacturer barcodes for better tracking and protection against counterfeit goods.

Additionally, staying vigilant and proactive in ensuring the authenticity of your inventory is vital for safeguarding your business and maintaining customer trust.

Difficulty in tracking inventory

Tracking inventory becomes challenging with commingled inventory as products from different sellers are mixed. This can lead to inaccuracies, making it harder for you to monitor your stock levels effectively and account for any discrepancies.

For FBA sellers specifically, this lack of visibility into individual items may result in difficulty managing your own inventory and fulfilling customer orders promptly.

Additionally, the potential risk of receiving counterfeit products further complicates tracking inventory accurately. Ensuring that every item is genuine when using commingled inventory requires stricter vigilance and meticulous record-keeping, adding another layer of complexity to your inventory management process.

May impact branding and marketing efforts

Commingled inventory may harm your branding and marketing efforts. Counterfeit products can enter the supply chain, damaging your brand's reputation. Difficulty in tracking inventory makes it challenging to maintain quality control.

To protect your brand, consider using Manufacturer Barcodes or enrolling in Amazon's Brand Registry Program. Project Zero can also help you fight counterfeiting on Amazon. Maintaining control over your inventory is crucial for safeguarding your brand image.

How To Avoid Commingled Inventory on Amazon

These steps can help you maintain control over your inventory and minimize the risk of receiving counterfeit products.

Amazon Project Zero

Enroll in Amazon's Project Zero to take control of your brand's presence on the platform. This program enables you to proactively remove counterfeit listings without having to report them, giving you more authority over your products' integrity.

By leveraging Amazon's automated protections and self-service tools, you can safeguard your brand from potential infringement issues and provide customers with genuine products.

Embrace the power of Amazon Project Zero for a proactive approach toward protecting your brand from counterfeiters. This initiative enhances customer trust and empowers you to maintain the authenticity and quality of your merchandise within the marketplace.

Use Manufacturer Barcodes

To avoid commingled inventory on Amazon, opt for using manufacturer barcodes. This ensures that your products are tracked and identified accurately without the risk of being mixed with other sellers' items in the warehouse.

Manufacturer barcodes also offer better protection against counterfeit products, maintaining the integrity of your brand and ensuring customer satisfaction.

Issuing manufacturer barcodes for your products is crucial in preventing commingled inventory on Amazon.

Brand protection and accurate tracking are facilitated when these original product identifiers are used, helping you maintain control over your stock in the FBA system efficiently while preserving trust with buyers.

Enroll in Amazon's Brand Registry Program

To protect your brand and products on Amazon, enrolling in the Brand Registry Program is crucial. This will help you have more control over your listings and prevent counterfeit products from being sold under your brand name.

The program provides access to powerful tools for managing and protecting your intellectual property rights, such as proprietary text and images. By enrolling in the Brand Registry Program, you can take advantage of enhanced brand content features, including better product display options that can boost customer engagement.

Moreover, joining the Brand Registry Program gives you access to advanced reporting tools that allow you to monitor potentially infringing activity and take action when necessary. It also enables you to create a trusted relationship with customers by helping them make confident purchasing decisions when they see your products listed on Amazon.

Prioritize enrolling in this program if safeguarding your brand's integrity is important to you as an Amazon seller.


Amazon's commingled inventory system can have both benefits and risks for FBA sellers. Understanding how it works is crucial for making informed decisions about your products.

By staying proactive and utilizing available programs like Amazon Project Zero and Brand Registry, you can mitigate the potential drawbacks of commingled inventory and protect your brand on the platform.

Enhance your Amazon FBA strategy and reduce the risks of commingled inventory with our secure and efficient fulfillment services. Contact us and let us handle your logistics so you can focus on growing your brand.

FAQs on Amazon’s Commingled Inventory System

1. Does Amazon mix inventory with third parties?

No, Amazon does not automatically mix inventory with that of third-party sellers. Sellers can choose to use Amazon's Fulfilled by Amazon (FBA) service with commingled inventory, but they also have the option to keep their inventory separate.

2. What is inbound inventory on Amazon?

Inbound inventory on Amazon refers to products that are being shipped to Amazon's fulfillment centers by sellers. Once received, these products become available for sale and fulfillment by Amazon.

3. Does Amazon have its own inventory?

Yes, Amazon does have its own inventory. This includes products that they buy and resell to consumers, as well as products under Amazon's private label brands.

4. What is an example of commingling?

An example of commingling is when different sellers' identical products are stored in the same bin at an Amazon fulfillment center, and any order for that product could be fulfilled using any seller's item, rather than pulling from each seller's specific stock.

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