Amazon Adds Seller-Fulfilled Handling Time Requirement

Amazon seller-fulfilled operators have a new fulfillment setting to audit before the end of June.

In a Seller Central News and Announcements post surfaced this week, Amazon said that starting June 29, 2026, sellers must keep accurate handling times for seller-fulfilled SKUs. Amazon defines accuracy as the actual handling time consistently matching the configured handling time for each SKU. The update applies to seller-fulfilled offers, not FBA inventory, and Amazon says custom, handmade, and Heavy & Bulky less-than-truckload shipments are excluded.

Amazon is giving sellers two main paths. The recommended option is Automated Handling Time, or AHT, which sets SKU handling time from recent shipping history and provides late shipment rate protection. Sellers can also keep manual SKU-specific handling times, but Amazon says it will monitor those SKUs over 30 days. If a SKU is consistently shipped at least one day faster than stated, Amazon says it will be flagged and the seller will have 30 days to update the setting. If the handling time is still not accurate, Amazon can start managing the SKU's handling time and provide late shipment rate protection for 180 days.

The practical risk is not only whether a product ships quickly. It is whether Amazon's promise to the buyer starts moving faster than the operation can reliably support. Seller-fulfilled brands often use extra handling time for inspection, kitting, fragile packing, supplier confirmation, third-party warehouse coordination, or weekend order flow. If those SKUs are pulled into a tighter promise based on recent history, the account may see more late-shipment exposure, support contacts, rushed shipping costs, and on-time delivery pressure.

SellerMage recommends a quick audit before June 29. Pull active seller-fulfilled SKUs, separate true same-day or next-day items from products that need prep, then decide which SKUs can safely use AHT. For manual SKUs, compare the configured handling time against actual shipment timing over the last 30 to 90 days. Do not use an average alone; check the slower edge cases that create late shipments when staffing, carrier pickup, supplier timing, or batch production changes.

This should also be reviewed alongside broader Amazon account management services, especially for merchants already watching on-time delivery rate or late shipment rate. If tighter handling promises could force faster carrier services, rerun margin checks with current Amazon FBA fees and seller-fulfilled shipping costs in mind. And if customer questions are tied to unclear delivery expectations, fold that into Amazon listing optimization rather than treating fulfillment settings as a back-office-only issue.

The key takeaway: seller-fulfilled brands should not wait until June 29. Decide where AHT is appropriate, protect SKUs with real prep complexity, and document the logic before Amazon starts judging whether each SKU's handling time is accurate.

Sources:

• Amazon Seller Forums, "New handling time requirements for seller-fulfilled products": https://sellercentral.amazon.com/seller-forums/discussions?categories%5B%5D=amzn1.spce.category.8b1ad9d2
• Amazon Seller Forums discussion quoting Seller Central notice, "Now sellers are being punished for shipping too quickly? When does the insanity stop?": https://sellercentral.amazon.com/seller-forums/discussions/t/caff2590-cf75-42e4-852d-c2932c4e3958
• NovaData, "Amazon FBM SKU handling time required from June 29, 2026": https://novadata.io/resources/news/amazon-handling-time-fbm-june-29-2026