Exempt 1 tax only


In British Columbia, we will be implementing a multi tax system in April.

We will have a Federal sales tax (GST) of 5% and a Provincial Sales tax (PST) of 7%.

Everyone pays the GST however, retailers registered for the PST are PST exempt.

So I need to be able to designate certain customers as exempt from only the PST, but as far as I can tell I can only make them tax exempt from both taxes? Is there a way to make them exempt from just the one tax?

This is going to be a major headache if I can't!