Amazon stopped prepping your inventory on 1 January 2026. Somebody still has to do it.

Key takeaways

• Reporting states Amazon discontinued US FBA prep and labelling services on 1 January 2026. Sellers must handle FNSKU labelling, poly-bagging and protective packaging themselves or pay somebody else.
• Reported third-party prep pricing ranges from $0.35 to $2.00 per unit depending on the work. Two sources give $0.50 to $2.00 and $0.35 to $1.50.
• This quietly changed the arithmetic on every upstream storage decision, because inventory must now arrive at AWD or FBA already prepped.
• There are three routes — supplier prep, prep centre, or in-house — and each shifts the cost, the risk and the lead time somewhere different.
• Non-compliant inbound is not free. Inbound defect fees rose sharply for 2026, reported from a range of $0.02–$0.07 to $0.32–$5.72.

This is the 2026 change that received the least coverage relative to its effect. It is not a fee increase, so it does not appear in rate cards. It is a service withdrawal, and the cost lands wherever you put it.

01What happened

Reporting states that as of 1 January 2026, Amazon no longer offers FBA prep and labelling services in the US.

The work that service covered:

• FNSKU labelling — the barcode identifying your unit
• Poly-bagging — with suffocation warnings where required
• Bubble wrapping and protective packaging
• Bundling and set preparation
• Taping, opacity bagging and other category-specific requirements

None of that became unnecessary. FBA still requires it. Amazon simply stopped being the one who does it.

02The three routes, and what each one actually costs you

Route 1: the supplier preps it

Cost: negotiated into the unit price, frequently at a lower rate than a domestic prep centre.

The risk: reporting describes this as risky specifically because FBA compliance errors are costly. A factory in another country, working from written instructions, applying US-market labelling requirements they do not otherwise deal with, at scale, with no ability to check the result before it ships.

When it works: simple prep — a poly bag and a label — on a product you have shipped repeatedly with the same supplier. When it fails: the failure is discovered at the fulfilment centre, on an entire container, after freight and duty have been paid.

Route 2: a prep centre

Cost: reported at $0.35 to $2.00 per unit depending on the work. One source gives $0.50 to $2.00, another $0.35 to $1.50.

What you get: the goods arrive as they come from the manufacturer and leave FBA-ready. Reporting describes this as the structural advantage of a 3PL over AWD in 2026 — prep is built in rather than needing a separate step.

What to check before signing: per-unit rates by prep type, receiving fees, storage while prep happens, minimum volumes, turnaround time, and what happens when they make a mistake. That last one is the question most sellers do not ask.

Route 3: in-house

Cost: your time, materials and space.

When it makes sense: low volume, high margin, simple prep, or products where you want to inspect every unit anyway.

When it stops making sense: almost always sooner than sellers think. Prep is repetitive work with no learning curve after the first hundred units, and the hours it consumes are hours not spent on sourcing or listings.

03The cost of getting it wrong

Reporting on the 2026 fee changes puts inbound defect fees rising from a range of $0.02–$0.07 to $0.32–$5.72, triggered by mislabelled shipments, delivery to the wrong warehouse, deleted shipment plans, abandoned inventory beyond 30 days and non-compliance with FBA prep requirements.

That is roughly an eighty-fold increase at the top of the range, and it is the enforcement mechanism for the change described above. Amazon stopped doing the work and made the penalty for doing it badly considerably larger in the same year.

04Why this broke the upstream storage maths

This is the connection most coverage misses, and it matters if you are evaluating where to hold inventory.

Amazon Warehousing and Distribution stores bulk inventory upstream of FBA at lower rates. But AWD does not prep. Reporting is explicit: if you use AWD, your products must arrive already prepped for FBA — which means a separate prep step somewhere, at an additional reported $0.50 to $1.50 or more per unit.

A 3PL reserve warehouse, by contrast, typically includes prep in its service. So the honest comparison stopped being “AWD storage against 3PL storage” and became “AWD storage plus prep somewhere else” against “3PL storage with prep built in.”

Our warehousing guide works through what that does to the numbers. The short version: it narrows AWD’s storage advantage considerably.

05What to do

Find out who is prepping your inventory right now. If you have not addressed this since December, either your supplier is doing it, your 3PL is doing it, or your shipments are being flagged. All three are worth knowing about.

Get prep quoted per SKU, not per shipment. Prep cost varies enormously by product — a poly bag and a label against a bundle requiring assembly, opacity bagging and a set label. A blended rate hides which SKUs are expensive.

Put the number in your unit economics. Between $0.35 and $2.00 per unit is not a rounding error against a fulfilment fee of a few dollars. It belongs in the margin calculator as a line, and it belongs in product research before you source.

If the supplier preps, verify a sample before the full run. Ask for photographs of the prepped unit, or have a prep centre or inspection service check the first shipment. The cost of checking is a fraction of the cost of a rejected container.

Ask a prospective prep centre what happens when they mislabel a unit. Whether they cover the inbound defect fee tells you what kind of partner they are.

Reconsider bundles. Bundling raises the unit price — which now moves the fulfilment fee price band — and raises prep cost, because assembly is charged accordingly. Both need checking together.

Check it on your own package. The dimensional weight calculator takes your packed dimensions and weight and returns billable weight and cubic feet — the two figures that drive freight and storage. Nothing is stored and nothing leaves your browser.

Frequently asked

Did Amazon really stop prep services?

Reporting states Amazon discontinued US FBA prep and labelling services on 1 January 2026. Sellers must handle FNSKU labelling, poly-bagging and protective packaging themselves or pay a third party.

How much does prep cost now?

Reported third-party prep pricing runs $0.35 to $2.00 per unit depending on the work — one source gives $0.50 to $2.00, another $0.35 to $1.50. Get it quoted per SKU rather than blended.

Can my supplier prep it instead?

Yes, and it is usually cheaper. Reporting describes it as risky because FBA compliance errors are costly and are discovered at the fulfilment centre, after freight and duty. Verify a sample before a full run.

What happens if inventory arrives non-compliant?

Inbound defect fees are reported to have risen from a range of $0.02–$0.07 to $0.32–$5.72, triggered by mislabelling, wrong-warehouse delivery, abandoned inventory and prep non-compliance.

Does AWD prep my inventory?

No. Reporting is explicit that inventory must arrive at AWD already prepped for FBA, which means a separate prep step at an additional reported $0.50 to $1.50 or more per unit.

Should I prep in-house?

It can make sense at low volume with simple prep or where you want to inspect every unit. It stops making sense sooner than most sellers expect, because it is repetitive work with no learning curve and it consumes hours better spent elsewhere.

Sources

1. Amazon FBA vs 3PL: full cost comparison (2026) (US FBA prep and labelling services ending 1 January 2026; third-party prep at $0.50–$2.00 per unit; cumulative FBA fee increases of 25–35% since 2020), WarehousingCosts accessed 2026-08-08
2. AWD against a 3PL reserve warehouse: the honest 2026 comparison (prep at $0.35–$1.50 per unit; the comparison being AWD storage plus prep against 3PL storage with prep included), Seller Essentials accessed 2026-08-08
3. Amazon AWD fees and pricing guide 2026 (inventory must arrive at AWD already prepped; separate prep adding $0.50–$1.50+ per unit), 3PL Guys accessed 2026-08-08
4. Amazon AWD vs FBA vs 3PL (supplier prep described as risky due to FBA compliance error costs; prep centre adding cost, complexity and time before AWD), 3PL Guys accessed 2026-08-08
5. Amazon FBA fees 2026: complete calculator and impact guide (inbound defect fees rising from $0.02–$0.07 to $0.32–$5.72; triggers including mislabelled shipments and prep non-compliance), Payability accessed 2026-08-08
6. Amazon FBA vs 3PL: 2026 US cost comparison (prep and labelling compliance moving to sellers or a 3PL partner from 1 January 2026), Olimp Warehousing accessed 2026-08-08