The Income GST report has undergone only one significant change: the
"accounts" option replaced with "sales" and "purchases".
It would be useful if you would disclose your book account structure, and
the options changed in the report.
Maybe you had included "interest income" in your sales and nee
I'm not familiar with a report that could do this. The practice I'm
familiar with is booking that sales tax line to a liability account.
Then you can simply check that balance, or run an account report on it.
When you pay the tax, you book it against the liability, thus reducing it.
The Income