AWD vs. FBA: When Amazon’s bulk warehouse actually saves money

With the AWD-FBA calculator: Compare on SKU level whether direct FBA, own logistics, or Amazon AWD is cheaper for your product.

From October, Amazon applies the familiar seasonal higher FBA storage fee. For standard-size items in the euro area it rises from EUR 27.54 to EUR 52.20 per cubic meter and month, then falls back to the lower rate from January. So this is not a general price increase, but the known Q4 effect. If a lot of inventory sits in FBA or stock ages, further surcharges can apply. “Better keep a bit more inventory on hand” then quickly becomes a meaningful cost block.

AWD — Amazon Warehousing and Distribution — can help in such cases. The service stores larger bulk quantities more cheaply in the Amazon network and automatically replenishes FBA. That is not economically sensible for every product. The answer mainly depends on one number: your average storage duration.

That is why AWD should not be judged in general, but on SKU level: with sales, dimensions, storage duration, season, and your own logistics costs. That is exactly why we built our AWD-FBA calculator at REVOIC. You can jump straight to the calculator or first read the key differences between AWD, FBA, and own logistics.

What is Amazon AWD?

AWD is an upstream bulk storage layer in the Amazon network. You ship goods in larger quantities into AWD, Amazon stores them there, and moves inventory into FBA whenever replenishment is needed.

The flow looks like this:

Supplier → AWD → FBA → customer

AWD does not ship directly to end customers. Customer fulfillment still runs through FBA. AWD handles bulk storage and replenishment toward FBA.

For Germany, France, Italy, and Spain, AWD warehouses are located in Germany. The United Kingdom has its own AWD in the UK.

Why does FBA storage get more expensive in Q4?

FBA is strong when goods sit close to demand and turn quickly. It gets expensive when FBA is used as a bulk warehouse.

To put that in context, look at three cost blocks: the regular monthly storage fee, possible surcharges for high inventory coverage, and possible surcharges for aged inventory. The regular storage fee is the predictable part. It rises seasonally in Q4 and drops again from January.

FBA storage fee per cubic meter and month, standard size, euro area:

For oversize, the rates are EUR 21.78 in the off-peak season and EUR 34.49 in peak season.

It gets interesting when inventory does not just sit briefly for sale, but stays in FBA for weeks or months. Then the utilization surcharge can also apply. It depends on how many weeks of inventory you hold relative to sell-through.

Utilization surcharge, per cubic meter and month:

The second surcharge covers aged inventory. It becomes relevant from 241 days of storage. That does not mean you should plan for such horizons. For many sellers, the first tier already shows why too much inventory in FBA gets expensive.

Aged inventory surcharge from 241 days, per cubic meter and month:

A more realistic example: If one cubic meter of inventory sits in FBA for 250 days, an aged-inventory surcharge of EUR 47.99 per month can already apply on top of the regular storage fee. That is almost four times the pure AWD storage fee in the base rate of EUR 12.33 per cubic meter and month.

That is why FBA often works cleanly for fast movers, but can get expensive with seasonal stocking or larger import quantities. Anyone who ships the entire reserve straight into FBA often pays for planning security with high storage fees.

What does Amazon AWD cost?

AWD lowers storage costs, but comes with its own fees. Besides storage, inbound, outbound, and transport from AWD to FBA apply.

AWD fees EU:

The AMS rate is the discounted rate. You only get it if certain conditions are met:

1. Delivery into AWD via Amazon Global Logistics or the Partnered Carrier Program
2. In the last 90 days, at least 70 percent of the SKU automatically replenished from AWD to FBA
3. Inventory coverage of the SKU at least 70 days

New SKUs receive the AMS rate automatically in the first months if inbound runs via Amazon Global Logistics or the Partnered Carrier Program.

Lower storage fees alone are not enough for the evaluation. If a product turns very quickly and is constantly moved from AWD into FBA, transport costs can wipe out the advantage of cheaper storage.

Why can AWD reduce FBA surcharges?

The AWD advantage is not only the lower storage fee. What matters is that FBA only holds a near-demand buffer.

If at least 70 percent of FBA inventory is automatically replenished from AWD, several FBA fee blocks can drop for goods up to 365 days: the utilization surcharge, the aged-inventory surcharge, and the low-inventory fee.

In practice that means: the reserve sits more cheaply in AWD, while FBA only holds the quantity needed for short-term sales. That makes AWD especially relevant for planned stocking, for example before Q4 or with long production and import lead times.

When is AWD worthwhile on Amazon?

The most important metric is average storage duration: how many months of inventory do you hold relative to actual sell-through?

As a rough guide, the break-even is often around four months of storage duration. Below that, direct FBA is often cheaper. Above that, AWD becomes increasingly interesting.

Simplified example calculations, annual cost, standard product, off-peak season:

If you do not want to rebuild this calculation manually for every SKU, the AWD-FBA calculator is built for exactly that.

The examples also show an important limit: long storage duration makes AWD look better on paper. If an item sits long because it sells poorly, AWD does not solve the real problem. It reduces storage costs, but does not improve sell-through.

AWD makes most sense with planned stocking: seasonal demand, stable bestsellers with long replenishment times, larger import quantities, or assortments where being out of stock would cost more than holding extra inventory.

AWD vs. FBA vs. own logistics: which option is cheaper?

In practice there are usually three paths:

1. all inventory directly into FBA
2. reserve in your own warehouse, regular replenishment into FBA
3. reserve in AWD, automatic replenishment into FBA

Own logistics can be cheaper if warehouse space, staff, and processes are efficient. In calculations it is often valued too positively. Often only storage cost per cubic meter is in the model, while inbound, rework, labeling, FBA prep, shipment creation, carton handling, and transport to the Amazon warehouse are missing.

This is where AWD becomes commercially relevant. It is not only about storage fees, but also operational relief. Instead of preparing frequent small FBA shipments, you send larger quantities into AWD and let Amazon steer replenishment into FBA.

That fits pallet quantities and predictable sell-through better than small test quantities or highly volatile demand.

AWD-FBA calculator: which logistics option is cheaper for your SKU?

AWD cannot be assessed seriously in general. Two products with the same monthly sales can produce completely different results if dimensions, carton quantity, season, storage duration, and own process costs differ.

Our AWD-FBA calculator therefore compares three paths on SKU level:

• direct to FBA
• own logistics plus FBA
• AWD plus FBA

Among other things, you enter:

• monthly sales
• dimensions and weight of the packaged unit
• units per carton
• average storage duration
• season, i.e. off-peak or peak
• own storage cost per cubic meter
• own handling per unit
• AWD rate
• FBA buffer
• share of possible aged inventory

The calculator shows which path is cheaper on an annual basis and roughly where the crossover between own logistics and AWD sits. It does not replace a detailed review, but quickly gives a solid first assessment: should AWD be shortlisted for this SKU or not?

For which products is Amazon AWD not available?

AWD is not usable for every assortment. In the EU, AWD is only available for pan-European listed products, with VAT registration in Germany plus at least one other country, for example France, Italy, Poland, or Spain.

Excluded are, among others:

• dangerous goods and hazmat, including many battery items
• meltables such as chocolate, gummies, or gel-/wax-based products
• refrigerated goods
• jewelry, watches, high-value products, Amazon devices, and gift cards
• oversize as well as heavy and bulky goods over 63.5 cm per side or over 22.2 kg

For food, remaining shelf life is decisive. On inbound to AWD at least 185 days remaining life are required. On outbound toward FBA at least 105 days are required. If that is undershot, Amazon can automatically dispose of goods under the FEFO principle.

One point regularly causes confusion in practice: the FBA storage fee is based on volume, not weight. Weight together with dimensions determines the size tier and therefore also whether a product is AWD-eligible. For the storage fee itself, volume is the relevant driver.

Should I review AWD for my assortment?

AWD is mainly worthwhile when goods are planned to be stocked longer, FBA surcharges become relevant, or own logistics creates a lot of effort. For short storage times, small quantities, or very fast movers, direct FBA often remains the better option.

The best decision is made on SKU level. That is why the AWD-FBA calculator compares direct FBA, own logistics plus FBA, and AWD plus FBA. Only this three-way comparison shows which path is truly economical for a product.

If you want to evaluate your assortment properly rather than roughly, we are happy to support the analysis — with real costs, realistic assumptions, and a recommendation that fits each SKU.

FAQ on Amazon AWD, FBA, and storage costs

All fees mentioned are based on Amazon Seller Central Germany as of 22 Jul 2026. Amazon adjusts fees regularly. Before an operational decision, check the current rates again. The example calculations are simplified and without warranty.