If you sell on Amazon using Fulfillment by Amazon, today is the day your margins got thinner.

Starting April 17, Amazon is applying a 3.5% "fuel and logistics-related surcharge" on top of existing FBA fulfillment fees for all U.S. and Canadian sellers. The surcharge also applies to Remote Fulfillment with FBA orders shipping into Canada, Mexico, and Brazil. Buy with Prime and Multi-Channel Fulfillment get hit on May 2.

Amazon says the change works out to roughly 17 cents extra per unit on average. That sounds manageable in isolation — until you multiply it across thousands of SKUs and millions of units.

Why Now?

The stated reason is straightforward: the U.S. and Israel's ongoing conflict with Iran has disrupted transit through the Strait of Hormuz, a chokepoint for roughly one-fifth of the world's oil supply. Fuel costs have spiked, and logistics networks that rely on global shipping lanes are absorbing the hit.

Amazon framed the surcharge as a cost pass-through, not a fee increase — a distinction that sellers on Amazon's forums are not exactly buying. "A surcharge on a fee is still a fee," one seller wrote. Another calculated that the change would cost their mid-size electronics business an additional $14,000 per month. The surcharge is calculated on fulfillment fees, not sale prices, which means the actual dollar impact scales with product size and weight rather than revenue. AMZ Prep's breakdown shows that oversized items — already the most expensive to fulfill — take the biggest absolute hit.

The Bigger Picture

This isn't happening in a vacuum. Amazon already restructured its FBA fee schedule for 2026 with changes to storage, inbound placement, and low-inventory fees. Layering a percentage-based surcharge on top creates a compounding effect that makes fee modeling harder for sellers who were already navigating one of the most complex cost structures in e-commerce.

Digital Commerce 360 reported that the surcharge mirrors similar moves by UPS and FedEx, both of which implemented fuel surcharge increases in Q1. But those carriers don't also control the marketplace, the Buy Box algorithm, and the advertising platform that determines whether a product gets seen at all.

That's the tension sellers are grappling with. Amazon's marketplace generates an estimated $300 billion in third-party sales — more than seven times eBay's volume. For most sellers, leaving isn't a realistic option. Absorbing the cost or raising prices are the only two levers, and both carry risk.

What Sellers Should Watch

The surcharge is described as temporary and tied to macroeconomic conditions, but Amazon has a history of introducing "temporary" fees that become permanent fixtures. SPS Commerce's analysis recommends sellers immediately audit their fulfillment fee exposure and model the surcharge's impact by ASIN.

For brands that ship high-volume, low-margin products — think consumables, pet supplies, and household basics — the math may tip toward merchant-fulfilled or hybrid strategies. For everyone else, it's another line item in the growing cost of doing business inside Amazon's ecosystem.

The real question is whether this surcharge quietly disappears when fuel prices stabilize — or whether it becomes the new floor.