Today I use "including tax" price view settings on my WHMCS install in genral, and this works fine.
Although I have a couple clients that I create a lot of manual invoices.
With B2B-invoicing in Sweden (EU?) the natural/usual way to calculate tax is excluding tax.
The new feature I'm asking for is a way to switch including/excluding tax when creating a new invoice manually. Preferably a setting/checkbox per line, just like the "Taxed"-checkbox.