QuickBooks Online 2021 inventory tracking options. Let’s get into it with Intuit QuickBooks Online 2021. Here we are in our get great guitars practice file. Last time we entered some items for our service items, we can check those out by going to the sales tab on the left hand side, then the products and services up top. These are the service items that we entered that would then be helpful or used to populate things like invoices and sales receipts.