Currently, it appears as though you can only have one tax rate on an invoice. This is a big inconvenience, as in Connecticut, labor and parts are taxed at a certain rate, where as "computer and data processing services", such as us billing for cloud backup and Exchange e-mail accounts, are taxed at a lower rate. It is a really big inconvenience for us to have to create separate invoices for this. It would be nice to have a default tax rate, but then be able to change the tax rate on particular line items if necessary.

Reference: http://www.ct.gov/drs/cwp/view.asp?a=1477&Q=269930&drsPNavCtr=|40829|