Why is there a difference between the Income/Expense Total and the Income/Expense in the GST Summary?

Reversals or any type or negative entries can cause a difference between your totals in the GST Summary.

If an income is reversed (or negative for any reason) it will be shown in the income details section, but it will be applied as an expense, increasing the expenses in the GST Summary rather than reducing the income.

Similarly when an expense is reversed (or negative for any reason) it will be shown in the expense details section but will increase the income in the GST Summary rather than reducing the expenses.