Thanks for your reply.

However, I received a different response from QB team via chat.

"I have verified with our Back End, they have confirmed, for now only sales report like Sales
by Customer Detail and Transaction Detail by Account Report can show tax name. Other reports cannot show tax name yet like vat control transaction report, hence it is empty when you customize and add tax name column."

Kindly confirm if this is the case, or if there is a workaround to show it on the VAT Control account transaction report.