I'm here to help you efficiently set up and manage your Amazon inventory items in QuickBooks Desktop (QBDT), nitsujayyy. Let's go ahead and optimize your company for accurate sales and inventory tracking.
Firstly, if you're considering recording your Amazon sales in a separate income account, it will be best to create a new account dedicated to tracking those sales. Also, I suggest consulting your accountant for accurate financial tracking and suggestions.
To create one, please follow the steps below:
- Open your QuickBooks company file.
- Go to the List menu, then select Chart of Accounts.
- Head to the Account dropdown, then select New.
- Choose an account type and select Continue.
- Add the necessary details.
- Once done, click Save and Close,
Please refer to the screenshot below:

Alternatively, if you prefer not to create a new one, you can utilize an existing income account in your QBDT.
To record your inventory items, please create individual Inventory Parts for each item and then form an Inventory Assembly item for the bundled SKU. To create this, follow the steps below:
- Go to the List menu, then Item dropdown.
- Select New, then from the Type section, choose Inventory Part.
- Add the necessary information.
- Once done, click OK.
Once the individual inventory items are created, proceed to set up the Inventory Assembly for the bundled SKU.
- Go to the List menu, then the Item dropdown.
- Select New, then from the Type section, choose Inventory Assembly.
- Enter the required information, and ensure that the vendor and Income account associated with the item match those of the Inventory Part.
- On the Bill of Materials section, please add the Inventory Parts you've created.
- After completing the Inventory Assembly, click OK.
Below is a screenshot for your reference:

As for your third question, you can use the same income account for both Amazon and Shopify. However, please note that the Quantity on Hand for both platforms will be combined. Therefore, you can consider using the class tracking feature to help you identify the source of transactions.
Moreover, here are some articles that you can check and save if you need help managing your inventory stock in QuickBooks:
You're free to comment on this post if you have further questions about managing your inventory items in QuickBooks, nitsujayyy. I'll be here to help you out anytime.