By Bernardo Campelo, Forbes Business Council E-Commerce Leader, Amazon SPN Certified provider, Amazon SP-API authorized partner, and Founder of PrepVia.
A seller messaged me in January with a screenshot: a full pallet of inventory sitting in an Amazon fulfillment center, flagged as unprepped. His plan had been the same one thousands of sellers quietly relied on for years, ship it in a little rough, let Amazon’s in-house prep clean it up, eat the per-unit fee. That safety net is gone. As of January 1, 2026, Amazon no longer offers in-house FBA prep and labeling as a fallback. If a unit shows up out of spec now, no one downstream preps it for you. A missing barcode is the one thing Amazon still patches, by applying the sticker itself and logging a defect against your shipment. Anything else can be refused, returned or disposed of at your expense, and a unit that arrives without proper prep loses reimbursement eligibility if it is damaged or cannot be traced.
So I want to do something most prep-center blogs will not: actually teach you how prep works, before anyone tries to sell you on outsourcing it. Because the first decision is not which prep center to use. It is understanding what prep is, so you can tell whether to do it yourself or hand it off.
The 60-second version
FBA prep is the work of getting a unit Amazon-ready before it ships to a fulfillment center: the FNSKU label, a poly bag with a suffocation warning, bubble wrap, expiration dates, bundle labels, and a carton packed to Amazon’s limits. Since Amazon ended in-house prep on January 1, 2026, this is now the seller’s responsibility, do it yourself, have your supplier do it, or use a prep center. There is no longer a fallback that fixes a bad shipment after the fact.
Does Amazon still prep your products in 2026?
No, and this is the change every new seller needs to plan around. Per Amazon’s announcements, the in-house FBA prep and labeling service ended January 1, 2026, and since March 31, 2026 every reseller has to use Amazon’s FNSKU label even when the product carries a manufacturer barcode, while brand owners enrolled in Brand Registry can keep shipping on the manufacturer barcode. Compliant prep is no longer optional or something Amazon will quietly handle. Confirm the current requirements in Seller Central, but plan as if prep is fully on you, because it is.
24 to 36h prep. 35-hour end-to-end guarantee or the prep is free. Net-30 terms. From 50 units to full truckloads.
The DIY prep pipeline, step by step
- Receive and inspect, count against your packing list and check for damage.
- QC, verify the right product, condition, and expiration dates.
- FNSKU label, cover the manufacturer barcode so only one code scans.
- Protective prep, poly bag at least 1.5 mil thick, with a suffocation warning on any bag whose opening measures 5 inches or more when flat, plus bubble wrap or shrink as the category requires.
- Carton, pack to Amazon limits: 50 lb per box and a maximum of 36 x 25 x 25 inches for FBA since June 2025. AWD boxes still cap at 25 x 25 x 25 inches.
- Box content, provide the manifest so check-in is fast and fee-free.
- Ship, to the fulfillment centers Amazon assigns.
Each step has a compliance trap. The deeper ones are covered in the FNSKU labeling guide and the box content guide.
DIY versus a prep center
Doing it yourself is not free. It is your time, plus consumables, plus your error rate. Typical industry numbers put DIY materials and handling at roughly $0.40 to $0.95 per unit before your labor, while a prep center charges a bundled per-unit rate that includes the equipment and the scan accuracy. The honest decision is when your volume, the value of your time, or your compliance risk outgrows a DIY setup. PrepVia’s pricing is on the pricing page, and this is one of the thirteen tools every Amazon seller should expect from a prep center.
Frequently Asked Questions
Do I need a prep center for Amazon FBA?
Not strictly. You can prep yourself or have your supplier do it. But since Amazon ended in-house prep on January 1, 2026, the work is fully your responsibility, and a prep center makes sense once your volume, your time value, or your compliance risk outgrows a DIY setup.
Does Amazon still prep products for FBA in 2026?
No. Amazon discontinued in-house FBA prep and labeling on January 1, 2026, and since March 31, 2026 every reseller has to use the FNSKU label, even on products that carry a manufacturer barcode. Compliant prep must be done by you, your supplier, or a prep center. Confirm the current rules in Seller Central.
What does FBA prep actually involve?
Receiving and inspecting your units, QC, applying the FNSKU label over the manufacturer barcode, protective prep such as poly bagging with suffocation warnings, and packing cartons to Amazon’s weight and size limits, then providing box content. Each step has compliance requirements that, if missed, lead to fees or rejected shipments.
How much does FBA prep cost if I do it myself?
Typical industry figures put DIY materials and handling around $0.40 to $0.95 per unit before your own labor, plus equipment like a thermal printer. A prep center charges a bundled per-unit rate that includes equipment and guaranteed scan accuracy, which is often the better value once you account for your time and error rate.
