In banking, my client's GST is coming up 'out of scope'. How do I change this?

Hi IMarksGardening, 

Thank you for your question and welcome to our community. 

Based on what you mentioned, it is likely that your client might have set "Out of scope" as the default GST code for the bank account. You can change it by following the steps in the link below:

How to I set up a default tax rate for transactions (Inclusive / Exclusive of GST)? [Video]

Thank you and please let us know if you require any additional assistance.