Hi there,

Thanks for posting in the Community!

The figures reported in your BAS are based on transactions recorded in QuickBooks Online. The only way to adjust the 1B figures is to edit the existing expense transaction or record a new expense or journal entry.

To create an expense transaction:

1. Click on the + New.
2. Click on Expense.
3. In the account or category details select the GST on purchases tax code in the first line.
4. In the second line item choose GST free or Out of scope so only the GST amount is captures.

If you wanted to use a journal entry, I recommend checking with your accountant on what balancing accounts to use. 

Check this link to learn more about GST: Simpler GST FAQ.

Drop by again in the Community if you have further questions about QBO.