08/16/2026
Amazon storage fees start counting the day your inventory lands, not the day you notice them.
Two clocks. Aged-inventory surcharges now begin at 181 days, 90 days earlier than last year. Peak storage runs October 15 through January 14 at roughly double the off-peak rate. Anything you send in August that sits pays into both.
That is Profit Leak #4, and it never arrives as an event. It arrives as a slightly worse month, six months later.
Save this and pull your aged-inventory report before the next PO goes out. Start free at sellerforge.ai