Thank you for reaching out on this.
Based on what you told me, The GST function might have been turned on in your client's file recently. You can set the default tax code to "Out of Scope" if you don't want to be asked what tax code to use. For more information, please visit the link below:
Thank you and please let us know if you require any additional assistance.
Thanks for your reply. I've investigated further and it seems my client accidentally 'enabled GST' which apparently can't be reversed....bugger. This of course translates to an increase in processing time for me and you know what that means for the client.
Thank you for getting back to us on this.
Yes, I understand what that means. If you select Out of scope of GST as the Default tax rate selection under the Advanced session in Accounts and Settings in your client's file, QuickBooks should stop asking what GST code to use in transactions hence would help to save you and your client's time.
Please take a look and let me know if that works for you. Thank you.