Amazon FBA Sellers Face Storage Fee Hikes and Buy Box Shake-Up in July 2026

Amazon FBA sellers are navigating a combination of rising costs and algorithm changes in July 2026, according to seller-focused industry coverage. Fulfillment by Amazon storage fees rose 14% this month, adding to cost pressure at the same time Amazon continues rolling out its restructured Buy Box ranking algorithm.

The storage fee increase compounds the pricing complexity sellers already face from Amazon's shift toward weighting delivery speed and seller performance metrics more heavily than price in Buy Box allocation. Coverage of the July changes also notes the continued expansion of Amazon's New Selection Program, which offers incentives for sellers introducing new products, alongside adjustments to Canada-based prep services.

For sellers using automated repricing tools, the combined effect of higher fixed costs and a more delivery-weighted ranking algorithm means margin models built earlier in 2026 likely need recalculating, with software that can factor in fulfillment costs and delivery-speed scoring becoming increasingly valuable compared to price-only repricing logic.