Hi HollyBerry,
Thank you for reaching out on this.
This is more of an accounting question and I am happy to share my understanding on this but please double check with your accounting professionals such as accountants and bookkeepers to ensure best practice and compliance.
If you have marked your BAS as lodged in QuickBooks Online, you can use the "ATO Clearing Account", and as the transaction shouldn't carry any GST, you can select a "Out Of Scope" as the tax code.
For more details, please visit:
Thank you.