In QuickBooks, a non-stock part is one of the types of line items you can use when you are filling out a sales or purchase form. You use non-stock part items to track merchandise that:

You purchase but do not resell.
You sell but do not purchase.
You purchase and resell but do not track as stock.

In QuickBooks, a stock part is one of the types of line items you can use when you are filling out a sales or purchase form. You use stock items to track merchandise your business purchases, keeps in stock, then resells. For each stock item, QuickBooks tracks the current number in stock and the value of your stock after every purchase and sale.

QuickBooks provides eight different types of items to help you fill out sales and purchase forms quickly.

Use this type For
Service Services you either charge for or purchase. Examples include specialised labour, consulting hours, and professional fees.

Stock part Merchandise or parts you purchase, track as stock, and then resell. QuickBooks cannot track manufacturing stock for products you build and sell.

Non-stock part Goods you buy but don't track, like office supplies, or materials you buy for a specific job that you charge back to your customer.

Other charge Miscellaneous labour, materials, or part charges, such as delivery charges, setup fees, and service charges.

Subtotal Calculates all items above it on a form, up to the last subtotal. Useful for applying a surcharge to many items.

Group Useful to quickly enter a group of individual items that you've already set up as single items on your list.

Discount Subtracts a percentage or fixed amount from a total or subtotal.Note: The Discount feature is not currently available in QuickBooks or
QuickBooks Pro for the U.K.

Payment Records a partial payment you received at the time of the sale. It reduces the amount owed on an invoice.