by spencer kYou built a shipping plan, boxed up the units, and Seller Central rejected part of it — or capped what you could send so low that half your inventory is sitting on a pallet with nowhere to go. If you’re running into Amazon’s restock limits right as Q4 approaches, you’re not imagining it: Amazon brought back ASIN-level shipment caps in a bigger way this year, and a lot of sellers are finding out about them the hard way, mid-shipment, with peak season bearing down.
What Amazon’s restock limits actually are
Restock limits cap how many units of a given ASIN you’re allowed to send into FBA over a rolling window, separate from your account-wide storage limit. Amazon calculates the cap using a mix of your recent sell-through, your Inventory Performance Index, and how much of that ASIN is already sitting in its warehouses — sellers commonly describe the ceiling as roughly a 90-day supply, though the exact number moves by category and by account.
The part that trips people up is that this is a per-ASIN limit, not a per-shipment one. You can be well under your total account storage cap and still get a shipment plan rejected or trimmed because one specific product has hit its individual ceiling. A strong seller with six SKUs can have five of them sail through and the sixth — often the best seller — get capped hardest, because high velocity plus a healthy on-hand count reads to Amazon as “already well stocked,” even if you know a demand spike is coming.
Why the caps are hitting harder this year
Amazon reactivated and tightened these limits going into 2026, and multiple sellers and consultants have reported meaningfully lower FBA capacity allowances than in prior years. Layer that on top of the usual pre-Q4 crunch — peak fulfillment pricing runs from mid-October through mid-January, and fulfillment centers are already working through the seasonal inbound surge — and the timing couldn’t be worse for a seller who over-ordered or who is trying to build a Q4 buffer the way they always have.
If you request an increase through Capacity Manager, treat it as a queue, not a switch you can flip the week you need it. Requests are generally processed in the order they arrive within Amazon’s bid tiers, so a request filed in late September for November capacity is competing with sellers who filed in August. Waiting until you’re already capped out to ask for more room puts you at the back of that line.
The real problem: inventory that’s stuck outside FBA
The cap itself is Amazon’s problem to manage. The inventory sitting in your garage, your 3PL, or a freight forwarder’s dock because Amazon won’t take it yet is yours. That’s the part that actually costs you money — you paid to manufacture or buy it, you’re probably paying to store it somewhere in the meantime, and every week it sits there is a week it isn’t turning into revenue during the highest-demand stretch of the year.
A few patterns show up repeatedly once sellers hit their caps:
- The “almost enough” SKU. You have inventory that would comfortably cover Q4 demand, but Amazon will only take a slice of it now, so you’re stuck holding the rest and hoping a later shipment window opens before you sell through.
- The overbought SKU. You ordered ahead of a capacity cut you didn’t see coming, and now you’re sitting on genuine excess that has no near-term path into FBA at all.
- The FBM overflow. You’re fulfilling the capped units yourself, but pick-pack-ship on top of your regular operation isn’t sustainable past a few weeks, especially heading into your busiest season.
If you’ve also been watching 3PL storage fees climb while that overflow sits on a rack, the math gets worse the longer you wait it out.
Your options when you’re capped out
None of these fixes are exclusive — most sellers end up combining two or three depending on how much excess they’re actually holding.
- Send smaller batches, more often. Instead of one large shipment sized for 60 days, split it into two- or three-week batches. This keeps you under the per-shipment ceiling and gives Amazon a reason to see the ASIN as consistently moving rather than overstocked.
- Shift the overflow to FBM. Fulfilling the capped units yourself from a 3PL or your own warehouse keeps the listing live and buying, even if it’s not the fulfillment method you’d choose by default.
- File for an increase early, and don’t wait to see if you need it. If your sales history supports a higher cap, request it now, before the Q4 queue backs up.
- Sell off what genuinely won’t fit. If you’re holding units that have no realistic path into FBA before they’re needed — or before they age into a worse storage or surcharge bracket — the better move is often converting that inventory to cash now rather than paying to store it through a season it can’t help you sell in.
That last option is where a lot of sellers get stuck, mostly because “liquidate some of it” feels like giving up on a product that’s actually selling fine — it’s just capped. But holding excess that Amazon won’t accept isn’t really a strategy, it’s a waiting game against storage costs and shelf life, and the inventory that’s genuinely surplus to what you can move into FBA before it matters is inventory that’s better off recovered now than warehoused on the chance a capacity window opens later.
Recouply buys that kind of excess directly — the units your restock limits won’t let you ship in on the timeline you need. You get an instant estimate, a same-day formal offer, and payment once the inventory is received and counted, so the capped stock stops costing you storage and starts becoming working capital instead. If that sounds like where you are right now, you can get a free instant quote and see what the excess is actually worth before you commit to warehousing it through Q4.
FAQ: Amazon restock limits
How do I check my current restock limits?
In Seller Central, go to Inventory > Manage FBA Inventory and look for the Restock Limits column, or check the Capacity Manager dashboard, which breaks limits down by ASIN and shows both weekly and monthly caps where they apply.
Can I request a restock limit increase?
Yes — Capacity Manager lets you submit increase requests for specific ASINs. Amazon evaluates them against your sell-through history and processes them roughly first-come, first-served within its bid tiers, so requesting early matters more than how strong your case is.
What happens if I try to ship over the limit?
Seller Central generally won’t let the shipment plan go through as sized — it will flag or trim the plan before you can confirm it, rather than accepting the overage and charging you after the fact, so plan shipments to your current limit rather than your ideal quantity.