Hi there, @DCPHoward,

Yes, you can create separate accounts to track expenses or sales for anyone who is a supplier and a customer. However, QuickBooks has limitations with duplicate names, where it only allows entering them once, even if they are on different lists.

There are several workarounds for this, see items below:

• Enter any codes into the “Suffix” field of the customer profile. This method ensures the name still shows up alphabetically on the Customer List.
  
  
• Add a middle name (or initial).
• Use a nickname for the customer accounts.
• Another trick is adding symbols for customer names, which makes the variation more visually distinct and subtle on a name list. Do not alter the supplier's name because it might affect your tax reporting.

Just in case, I'll be adding these articles for future reference:

Manage your customer list

Suppliers overview

Reach out to me if you have any other issues or concerns by leaving a comment. I want to make sure everything is taken care of for you. Take care!