When you are a newbie, how long can you store your FBA inventory before Amazon starts charging you?
Yes, “Get 120 days free storage for 100 units, plus 180 days free liquidation with Fulfillment by Amazon” for new sellers
Amazon starts charging Monthly inventory storage fees as long as you have inventory in the Fulfillment centers.
Base monthly storage fees are charged to all inventory in fulfillment centers. Charges vary based on product size tier and time of year.
Some sellers are also subject to a Storage utilization surcharge in addition to the base monthly storage fee.
During October through December the fees quadruple.