You can change the default settings for GST on the Accounting page, trucktub1.

Here's how:

1. Go to the Gear icon.
2. Select Account and settings.
3. Proceed to the Advanced tab.
4. On the Accounting page, click the pencil icon.
5. Choose the default rate from the drop-down list.
   
   
    

Please let us know if there's anything else we can help you with.