What are Amazon FBA restock limits?

Restock limits are caps on how much inventory you can send into Amazon's fulfillment network, set per storage type (standard-size, oversize, apparel, footwear) and measured in cubic feet of capacity. They are based on your sales history and your Inventory Performance Index. Hit the limit and you cannot send more of that storage type until you sell through or the limit rises.

What is the difference between a restock limit and a storage limit?

A restock limit caps how much you can send in. A storage volume limit caps how much you can have stored at all, and it lands when your IPI drops below the threshold. You can be inside your storage limit but blocked by a restock limit, or the reverse. They are two separate constraints, and a healthy operation manages both.

How do I increase my Amazon restock limit?

Improve the inputs Amazon reads: sell-through, in-stock rate, and IPI. Higher velocity and a healthy IPI raise your limits automatically over time. For a specific need, the Capacity Manager lets you request more capacity, sometimes backed by a per-cubic-foot reservation fee and a performance pledge. Plan the request weeks ahead, not the day you want to ship.

Why did my restock limit suddenly drop?

Usually a fall in sell-through or IPI, a seasonal recalculation, or slower velocity on the storage type in question. The limit is recalculated regularly on your recent performance, so a soft stretch shows up as a tighter cap a few weeks later. That lag is exactly why you manage to headroom, not to the line.

Field Guide Amazon and multi-channel operations

Amazon FBA restock limits, explained

Restock limits decide how much inventory you are allowed to send into FBA, by storage type. Here is how Amazon sets them, how to read yours, and how to raise them before they cost you a peak season.

April 1, 2026 9 min read

Amazon restock limits decide how much inventory you are allowed to send into the fulfillment network, and these FBA restock limits are one of the quietest ways a growing brand gets caught. You plan a peak-season shipment, go to send it in, and discover you can only send a fraction of it. The stock is ready, the demand is there, and Amazon will not take it. Understanding how these limits work, and managing to headroom instead of to the edge, is the difference between a smooth fourth quarter and a scramble.

What a restock limit actually is

A restock limit is a cap on how much you can send in, set separately for each storage type: standard-size, oversize, apparel, and footwear. It is measured in cubic feet of capacity, not units, so a limit that feels generous for small items can be tight for bulky ones. Each storage type has its own limit, and you can be wide open on one and blocked on another at the same time.

The limit is calculated from your recent sales history and your Inventory Performance Index. Sell through your stock quickly and keep your IPI healthy, and your limits climb. Let either slip, and they tighten, on a delay, which is what makes them feel like they appear from nowhere.

How to read your limits

You do not have to guess at any of this. Amazon shows you the numbers.

Open the Shipping Queue or Restock Inventory page

When you build a shipment, Seller Central shows your maximum allowed quantity for that storage type and how much of your capacity you have already used. If a shipment is being trimmed, this is where you see why.

Check the Capacity Monitor

The Capacity Monitor shows your capacity limit per storage type, your current usage, and how close you are to the cap, as a live gauge. This is the page to glance at weekly, the same way you glance at your IPI trend.

Note which storage type is the constraint

Because each type has its own limit, find the one that is actually blocking you. Often it is oversize, where a few bulky SKUs eat your capacity fast, while your standard-size limit sits half empty.

How to raise your Amazon restock limits

There are two levers: the slow, durable one and the fast, paid one.

The durable lever is performance. Sell-through, in-stock rate, and IPI are the inputs. Move those and your limits rise on their own over the following weeks. This is the same discipline that protects every other part of your Amazon operation, and it compounds: a healthy account is rewarded with room to grow.

The fast lever is the Capacity Manager. When you have a specific, near-term need, the Amazon Capacity Manager lets you request additional capacity. Amazon may grant it outright, or offer it backed by a per-cubic-foot reservation fee and a performance pledge, where you commit to a sell-through and are charged or credited against it. Used deliberately, it is a fine tool. Used in a panic the week before a shipment, it is expensive insurance against poor planning.

Restock limits do not punish you for growing. They punish you for storing stock you are not selling.

Plan around them before peak

The recalculation lag is the whole game. If you intend to send a large fourth-quarter shipment, your limits and your IPI need headroom months before, not the week you want to ship. The brands that get caught are the ones who treated restock limits as a December problem.

A restock-limit routine that keeps you clear

Check the Capacity Monitor weekly, per storage type
Work IPI and sell-through up through the summer, before peak demand
Clear excess and stranded stock so it is not eating capacity you need
Identify your constraining storage type and plan shipments around it
Use the Capacity Manager weeks ahead for a planned surge, never as a last resort

The thread running through all of this is the same one in every part of Amazon and multi-channel operations: the score, the limit, the surcharge are all downstream of one habit, selling through what you store and never parking dead stock. Get that right and restock limits stop being a threat and become a number that quietly stays handled.

A close companion problem is stranded inventory, units that eat your capacity while being unsellable; clear those first and you often free up more room than a capacity request would buy you.

If your restock limits are throttling growth, especially across more than one brand, that is exactly the kind of operational ceiling a Growth Audit is built to map and lift.