Categorising those transactions is a bit tricky in QuickBooks Self-Employed, @M112.
For accounting matters, I'd recommend reaching out to an accountant to provide you with expert advice in dealing with these transactions. This is to ensure the accuracy of your accounts. If you don't have one, you can visit the Find-a-ProAdvisor website to locate one nearby.
Thus, I'd like to add this article to give you more information about the categories you can choose: Categorise transactions in QuickBooks Self-Employed.
Furthermore, you can refer to this article for information on how QuickBooks Self-Employed tracks your business income and taxes: QuickBooks Self-Employed Overview.
Feel free to keep me posted if you still have questions or concerns about organizing your QBSE transactions. I'll be around for you.
