I work as a Handy Man going to client sites and doing work for them on items
like install A/C units and toilets and other things they need done.

The problem I am having is with Taxation in Canada. The services I perform
are not taxable by Ontario Sales Tax, but are GST taxable. But any product I
need from the Retailer I work from are.

Is there a way to set up the invoice so It will allow another colum between
"Discription" and "Unit Price" to allow for a varible taxable status. IE
code 0 means Item is not taxable, code 1 means items is only GST, code 2
means item is only PST taxable and code 4 means item is both PST & GST
taxable. At this point I am having to enter the number manually after using
Calc to work out the amounts.