I am wondering how to record when you purchase, for example, a 12 pack of Tshirts for say $50, but only sell 1 Tshirt to a customer. How do I record this?

You should consider having a 3rd party inventory management app with the disassembly feature to integrate with QBO.

Hello there.

I'm here to help you record purchases and sales transactions in QuickBooks Online.

You can record your purchase by entering the total amount of shirts from the twelve packs. Take note of the number of items per pack and multiply by the number of packs you receive from your supplier.

The process allows you to track the remaining on hand for the item, get alerts when it’s time to restock and see insights on what you buy and sell. Another option would be to consult an accountant for expert advice if you're looking for an alternative option. This ensures your books remain accurate and error-free.

Here's how:

1. Click the + New option.
2. Select Expense below Vendors.
3. Under Item details, add a line item for T-shirts.
4. Add the total quantity of the shirts.
5. Enter the necessary information.
6. Hit Save and close.  

Also, did you know you can change the item type for a product or service? I have a link here you can use to learn more about how to categorize the products and services for better tracking in QuickBooks: Change product and service item types in QuickBooks Online.

Drop me a comment below if you have any other questions about recording transactions in QuickBooks. We'll be happy to help you some more. Have a great day.