Hi all!
I am having a little bit of a tricky time here… I am in British Columbia, Canada.
I have accidentally overlooked this big issue until now… and omg. It is quite serious. As I am in the midst of getting my workflow organized and I see the invoice / quotes just have a single tax value that is being lumped together. So all the 5% tax’s are getting added with the 7% taxes. And worse yet, the pdf generation doesn’t split the two tax’s in the quotes or invoice generation.
In Canada. We have 2 taxes. GST and PST
GST is 5% PST is 7%
GST is charged on all invoiced items “Goods and Services Tax” of course there are exclusions.
PST is charged on only things you can hold in your hand… ie: products.
I think ideally it would be good to have each product able to be taxable or not. And then more than 1 tax can be applied or not to each product.
Hmm… once that is setup then the pdf generation would need to be updated.
What I have tried to examine is where the lineitems are getting calculated so I could run a separate loop over the products and hold a secondary tax value… And then bring that value into the pdf generation… 
I found this sweet little “tip” - onblur event who would have guessed. Sweet trick! I am getting closer.
name' => 'tax_amount', 'label' => 'LBL_TAX_AMOUNT', 'displayParams' => array ( 'field' => array ( 'onblur' => 'calculateTotal(\'lineItems\');', ), ),
Hmm. I can see a little mountain that needs to be climbed.
Any best practices here… I hope a fellow Canadian user has a solution that is just perfect.
I hope.
