If you buy it or sell it, it’s an item. Items can also be things like shipping and handling charges, discounts, and sales tax.
When you choose an item, QuickBooks fills in a description of the line item and calculates its amount for you. QuickBooks provides 10 different types of items. Some items, such as service or inventory part items, help you record the services and products your business sells. Other items, such as the subtotal or discount item, are used to perform calculations on the amounts in a sale.
You can add and edit items by choosing Lists > Items.
Watch how you can see how items are used on different sales forms such as estimates, invoices, and sales receipts.