The tax people are interested in the order amount. Don't use the label pdf as it doesn't mention the order value. Use the order statement pdf instead.

Don't need to print the whole A4 sheet. Cut the A4(297*210) sheets in half and it becomes A5(148*210).

Below is all the space you need in the order statement.

Use the  mouse to adjust the borders of the application.

In printer settings, do 1, 2, 3 and 4.