Overview

Amazon is rolling out a new surcharge called the Overmax Handling Fee, targeting FBA products that exceed specific size thresholds. Beginning January 15, 2026, any product with a longest side exceeding 96 inches or a combined length plus girth exceeding 130 inches — while remaining within the 150-pound weight limit — will be subject to additional fees on top of standard FBA fulfillment charges. This change is designed to account for the extra handling complexity and resources required for exceptionally large items.

Key Points / What Sellers Need to Know

• New fee effective January 15, 2026 — The Overmax Handling Fee applies starting in the 2026 non-peak period and is charged in addition to existing FBA fulfillment fees, not as a replacement.
• Size triggers — Products are flagged as overmax if the longest side exceeds 96 inches or the combined length plus girth exceeds 130 inches, while still weighing up to 150 pounds.
• Tiered by weight — The fee is structured into three weight brackets: $17 for items 0 to 50 lb, $21 for items over 50 lb up to 70 lb, and $25 for items over 70 lb up to 150 lb.
• Applies across product types — The surcharge applies equally to non-apparel, apparel, and dangerous goods categories with the same rate structure.
• Stacks on top of FBA fees — This is a supplemental charge, meaning sellers pay their regular FBA fulfillment fee plus the overmax fee, potentially increasing total fulfillment costs significantly for qualifying products.

How the Overmax Handling Fee Works

The Overmax Handling Fee functions as an add-on to the standard FBA fulfillment fee structure. When a product's dimensions cross either of the two size thresholds — longest side greater than 96 inches or length plus girth greater than 130 inches — the additional fee is triggered automatically. The fee amount depends solely on the product's shipping weight, which is the greater of the actual unit weight or the dimensional weight. Amazon calculates dimensional weight using the standard formula, and the higher of the two values determines which weight tier the product falls into. This means that even a relatively lightweight but bulky product could land in a higher fee bracket based on its dimensional weight.