What is cost of my adjustment? The cost of your adjustment is the Moving Average Cost (MAC) of the variant that has been adjusted. Related articles Create a Stock Adjustment Can I use a barcode scanner to do a stocktake in QuickBooks Commerce? I have a lot of products to adjust, can I do this in Bulk? Where can I find a full list of Purchase Orders including Voided orders to make a full accounting? How do I do a stock count?