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Amazon Inventory Management Guide

Want to learn essential inventory management skills and stay on top of Amazon’s storage and restock limits?

Inventory management is an integral part of running a successful Amazon business. With it, you lessen the likelihood of encountering two major profit killers: losing sales by going out of stock, and accruing costly storage fees from overstocking.  

Good inventory management is about finding that perfect balance between too little and too much stock. With the right strategies in place, you’ll be able to figure out how often you need to reorder to maintain optimal inventory levels.

In this article, we’ll go over best practices for proper inventory management, as well as free and paid solutions you can use to automate your inventory.

 

Why is inventory management important?

These days, customers don’t have patience for poor inventory management. Their expectations for convenience and delivery speed when shopping online are high: 68% of U.S. consumers expect their items to arrive within zero to three days of purchase, and 47% are willing to spend more for a product with faster shipping. Online shoppers don’t want to wait around for products to come back in stock — and the majority (70%) would be upset if their order arrived late.

If you constantly run out of inventory, your customers will have no choice but to purchase from your competitors, increasing their organic ranking as yours diminishes each day you’re out of stock. On the other hand, if you overstock your inventory, you tie up capital in your business and run the risk of long-term storage fees if utilizing FBA

Many factors affect inventory management as an Amazon seller: your supplier’s manufacturing and shipping times, customs delays, FBA storage capacity and fees, and sell-through rate all play a role.

When you first launch a new product on Amazon, it can be difficult to figure out how much inventory you should order based on current demand and competition. After all, your brand-new listing will have no reviews, and without that social proof it won’t convert as well as your competitors’ listings 一 at least not right away. 

Over time, you will learn how fast your inventory sells, so you can more accurately order to avoid overstocking or selling out completely. 

 

Common inventory issues Amazon sellers face

Most sellers run into inventory problems at some point 一 and that’s ok! You just need to be prepared to handle the issues that inevitably pop up. 

Running out of inventory 

Not having enough products in stock to meet demand can impact your sales as well as the overall ranking of your listing.

Here’s some great advice from Eva Hart, one of our Amazon experts here at Jungle Scout:

“Never go out of stock because it hurts your Best Seller Rank. A great way to stay in stock when you’re running low on inventory and waiting on a shipment is to slow things down on the demand side. You can do this by pausing marketing strategies such as off-channel ads or campaigns, and by setting a higher price point for your product. This will help brands keep the customers they already have, but slow down acquiring new ones.”

You want to avoid going out of stock at all costs — even if you have to intentionally slow your sales by toning down advertising and notching up your sales price. As Eva notes, customers familiar with your brand may continue to buy from you, but you’ll have a harder time reaching new customers unless you are already ranking well organically for your main keywords. 

The longer you are out of stock, the more damage you are causing to your Best Sellers Rank and organic keyword ranking. Amazon wants to promote products that are consistently available. If yours aren’t, you’ll be penalized, and it may be difficult for you to recover from lost ranking. 

Overstocking inventory

If your product has over 90 days of supply and/or at least one unit aged over 90 days, Amazon considers its excess inventory. Remember, Amazon is not a storage facility but a fulfillment center. They want products to move in and out within a 90-day span — the quicker the better. 

Excess inventory affects your overall IPI (inventory performance index) score. Having too much inventory in Amazon’s fulfillment centers, they will reduce your inventory storage limits and charge you monthly and long-term storage fees. These bills add up — sometimes to sums greater than the value of your unsold inventory!

If you have inventory stored in FBA, Seller Central has the FBA Inventory tool to help you determine if you have excess inventory, as well as address stranded inventory and long-term seller fees.   

Even if you’re using FBM (fulfillment by Merchant), your money may be tied up in slow-moving inventory. If you are using a third-party fulfillment center, you could be accumulating storage fees with them as well. 

Stranded inventory

Stranded inventory is a common issue many sellers don’t know how to fix. This happens when inventory stored in Amazon’s warehouse is no longer connected to an active listing on Amazon. It’s basically in limbo — it’s sellable, but no customers can actually purchase it. 

The worst part about stranded inventory is that even if your products are not listed for sale, you will still be charged monthly storage fees for each unit. 

Luckily, Amazon will list the inventory that is stranded within the Fix stranded inventory tool. You just need to actively check this section every so often, as you will not receive alerts from Amazon. 

It is a confusing topic, so if you come across this issue, please read our guide on the “Reasons for Amazon Stranded Inventory and How to Address Them.” 

Aged Inventory Surcharge (previously known as long term storage fees)

Let’s come back to the topic of carrying excess inventory in an Amazon fulfillment center. It’s another thing you should avoid,  as you can rack up a large bill from Amazon, depending on how many of your stored units are considered long-term. 

Around the 18th of each month, Amazon assesses its entire fulfillment network to calculate the age of each seller’s stored inventory. Your inventory age is calculated from the day it arrives at FBA warehouses. Any inventory that has been stored in a fulfilment center for more than 271 days will be subject to the aged inventory surcharge in addition to the usual monthly storage fees. Amazon will also continue to charge the aged inventory surcharge for units stored for longer than 365 days. 

For units aged 271-365 days, you will be charged $1.50 per cubic foot. For units aged for 365 days or more, you will be charged $6.90 per cubic foot or $0.15 per unit, whichever is greater.

Here are some fee examples provided on Amazon’s Aged Inventory Surcharge page:

Amazon’s new FBA Inventory Tool combines features from old inventory tools to show you inventory-specific metrics, actions, and recommendations across restock, excess, aged, unfulfillable, and stranded inventory types in a single view to simplify FBA inventory management.

6 tips for properly managing inventory

Stay ahead of your competitors with proper inventory management skills. Let’s go over a few tips and strategies to follow so you have more control over your inventory.

1. Keep a close relationship with your supplier

You should put in effort to build and nurture relationships with your suppliers — they’re responsible for bringing  your product ideas to life! 

If you have a good relationship with your supplier, they will often prioritize your orders over another customer of theirs. Otherwise, you may be waiting a long time for your products to be completed, causing a stockout on your end. Understand how they work and how you as a brand can make their job easier. 

“Many large brands have an employee dedicated to supplier relationship management. They often take trips to Asia (or wherever) to visit suppliers and have a regular cadence for communication.” – Eva Hart, Jungle Scout

Respect and proper communication go a long way with your suppliers. If you treat them right, they will treat you right. 

As you work more closely with your supplier, you’ll have a solid understanding of the lead times in your supply chain. Knowing how long it takes to manufacture, ship, and be received at Amazon is a must.  

2. Maintain around 60 days of supply

Do your best to keep around 60 days of inventory on hand at all times to cover your expected sales volume. This will help you avoid overstocking as well as going out of stock. You can forecast your sales volume by reviewing Amazon’s inventory reports as well as by monitoring your sell-through rate. 

Your sell-through rate for FBA is measured by how well you are balancing your inventory levels and sales. It’s calculated by dividing the total units sold and shipped to customers over the past 90 days by the average number of FBA inventory units during that same time period. 

You can see your sell-through rate for each product you sell in the FBA Inventory Tool, or overall sell-through rate in Inventory Performance.

A sell-through rate is over 7 is considered excellent. This means you are selling 7 times more units than you are storing on average. If your sell-through rate is less than 1, this means you held more inventory than you sold in the past 90 days.

A low sell-through rate means you are overstocking units and need to figure out ways to reduce your inventory in FBA.

3. Reduce excess inventory 

If you overestimated the sales volume of one of your products, don’t worry! It happens to everyone 一 even big brands. 

There are a few different ways to deal with excess inventory. 

Run promotions: This can include using coupons codes, buy-one-get-one deals, or running steep discounts. Lowering your price is usually a great way to accelerate sales for slow-moving inventory. Even if you’re taking a slight loss in sale price, it could amount to less than what you would owe in long-term storage fees if the units continue to sit in storage. 

Raise your keyword bids: If you are running ads for your products (which you should be doing anyway), a good way to get in front of more customers to get rid of the product is to raise the bids on keywords you are targeting. This strategy, paired with lowering your price, is a sure-fire way to move stale inventory. 

Create a removal order: If you have another place to store inventory other than Amazon, create a removal order in Seller Central and have the inventory sent to you before getting hit with large storage fees. Amazon may also run promotions where they will remove the inventory for free.

Liquidate the inventory: Liquidation is usually a last resort but if all other efforts fail, you can try to sell all of your remaining inventory in bulk at a large discount. This will allow you to gain back some capital that can be reinvested into a better-selling product.  

Donate the inventory: You also have the option of donating your products to charity organizations or non-profit such as Goodwill. You can often write off the donated inventory on your taxes to make up for the losses.

4. Plan for the unexpected

Not everything runs smoothly all the time. You may have delays with your supplier, shipping delays, customs delays, FBA warehouse delays, and other issues. The COVID pandemic was a perfect example of this: disrupted manufacturing and supply chains resulted in 53% of U.S. consumers experiencing difficulty finding products online beginning in March 2020. 

If you can, order backup units just in case something happens along your supply chain. 

This can include storing extra units in your own warehouse or even using a third-party storage/fulfillment center. In the event of a delay, you can maintain stock in FBA without worry, or even fulfill orders using FBM.

This is only recommended if you can accurately predict the demand for your product and have the ability to order and store additional units. Do not order extra if you are short on capital or storage space. 

5. Lower the demand for your product if running low on inventory

As we mentioned above, you can influence demand by raising your price and pausing your advertising campaigns if you are running low on inventory. This is a great way to maintain your in-stock rate, as it helps improve your IPI score. 

It is better to slow down your sales, even if it slightly affects your rankings, than it is to completely go out of stock. Once you have a healthy amount of inventory available in FBA, you can resume your normal price points and advertising campaigns. 

6. Use inventory management software

Having a reliable inventory management system in your arsenal will put you way ahead of any competitors who aren’t using one. Software such as Jungle Scout’s Inventory Manager will help you effectively manage your inventory levels and mitigate the risks we talked about above. 

Inventory Manager is an advanced demand forecasting tool designed to accurately calculate your inventory needs for your Amazon FBA business. The tool will predict future sales based on demand that will help you determine how much inventory to order to avoid stockouts or overstocking. 

Q4 2022 Seller Alert: Inventory Restock Limits

In October 2022, Amazon updated its restock limits as a way to help prepare for the holiday season. While Amazon states the restock limits will still allow sellers to send in up to four months worth of inventory, sellers are reporting their limits have been reduced by at least 50%. 

This update prevents most sellers from sending in additional inventory for the rest of the year, which will likely cause issues for many sellers. 

With this update, Amazon is only taking your current product offering into account, and not the products you may list during the rest of the season. 

So, how can you increase your Amazon restock limits?

Unfortunately, there is no one-size-fits-all type of solution to this problem, but here are some steps to consider. 

Request a restock limit increase

File a support ticket with Amazon Seller Support, explaining your current inventory situation. If you have a good IPI score, mention that as well, and request a restock limit increase for your account. 

Work with a third-party fulfillment center 

If this update has drastically reduced your inventory limits, consider working with a third-party fulfillment center to store your additional products and potentially having them fulfill FBM orders. 

Sell more products 

This may sound obvious, but the more products you sell, the more storage space Amazon will grant you. Work on optimizing your listing, adjust your PPC campaigns, or work on outside advertising solutions to drive more traffic and sales to your current listings. 

Jungle Scout’s Inventory Manager can help

To fully automate inventory management for your Amazon business, there is no better tool for the job than Jungle Scout’s Inventory Manager. This tool’s game-changing benefit is that it accurately predicts how much inventory you need and when to order it. 

While Amazon’s internal tools and reports can help you figure out the age of your inventory and ways to deal with excess inventory, Inventory Manager will calculate the exact date you should reorder your inventory along with the estimated costs and profits. The tool will mark each product as “Reorder Now,” “Reorder Soon,” “Overstock,” and “In Stock” to give a quick overview of your inventory needs. That way, you can avoid future stockouts.

Inventory Manager is available with the Suite or Professional Jungle Scout plans

Always stay in stock with proper inventory management

Not only does proper inventory management keep your best-selling products in stock at all times, but it also prevents you from overstocking slow-moving items and tying up capital in your business.

We hope this guide shows you how important inventory management really is. By using the tools provided by Amazon and a reliable inventory management system such as Inventory Manager, your Amazon business will be running efficiently and profitably. 

Do you have any more questions about managing your inventory? Let us know in the comments!

 

 

6 comments on “Amazon Inventory Management Guide

  1. Great post. For groceries, what key Amazon reports come in handy to keep track of? Do you just look at the previous month?

  2. This is Jeremy, the founder of Forecastly. Thank you to those of you that asked how we are different than other tools out there.

    One of the main areas where Forecastly shines is the prediction of ‘when’ to replenish inventory. Many sellers are focused on ‘how much’ to replenish, but it is actually more important to accurately predict ‘when’ you should be making that replenishment order accurately. We don’t need to talk about what specifically makes our algorithm different, but it is important to note that our system has been developed by professional inventory managers and statisticians to make an incredibly accurate prediction of future demand.

    There are some other tools that do a great job at automation in the replenishment process. Forecastly is tightening that up now, but it is important to remember that automation doesn’t prevent stock-outs. Accurate replenishment timing prevents stock-outs. With Jungle Stix, Greg just needed an accurately timed warning of when to place a new order with his supplier, and he would have prevented a stock-out. An automated ordering process wouldn’t have helped in this case.

    I hope this info is helpful. Cheers!

    1. Jeremy, thanks for your post. nice meeting you here!

      What about a promotion for Greg’s team? we are a huge group following Greg, and we will all grab it!

  3. Hi, thanks for the great post, and get the sticks back on their feet quick…

    Did you checked out RestockPro for inventory management? If yes, can you please give some details what Forecastly is better?

    Thanks in advance
    One of your many followers

    1. Hey Sam! Yep, we tried out RestockPro, Teikametrics and a number of other solutions. We also asked around to see what others in the industry were using and recommending. Forecastly was a clear winner for us. The forecasting predictions are the most accurate, the user interface is the easiest to use and it includes a number of other bells and whistles that were a nice bonus.

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