Add Canadian taxes

[Archanium]

It's based on: http://www.cra-arc.gc.ca/tx/bsnss/tpcs/gst-tps/rts-eng.html

[fabienkruba]

Hello. Just a quick comment here.

• Canada is Tax Exclusive : the prices shown in retail labels is usually before taxes.
• In this PR it seem you only included the federal part of the taxes. ( GST / Goods and Services Tax of 5%)

Some provinces also collect their own taxes:
https://en.wikipedia.org/wiki/Sales_taxes_in_Canada

Quebec as an additional sales taxes (QST or TVQ - Taxe Vente du Quebec) of 9.975%
Saskachewan 5% of PST ( provincial sales taxes)
Manitoba 8% of PST
British Columbia 7% of PST ( or 10% if liquor.. )

Other provinces either collect no provincial tax ( such as Alberta ) or have their sales taxes Harmonized ( HST ) which means it is the federal government that collects the provincial tax too and redistribute it to the provincial government ( ontario for instance where you have a 13% HST , corresponding to a 5% GST + 8% provincial)

Also as business rules:

• there are some goods that are tax free ( groceries) , or just eligible to the GST ( some books in quebec are GST only, but not when there is a CD/DVD binded to it for instance)
• canadian receipts should also display the tax collector number of the company/store. When provinces also collect directly their own share you should display federal and provincial tax collection numbers)
• receipts should show the split of the 2 taxes
  http://i44.tinypic.com/f087y9.jpg this is a sample of receipt from ontario ( before they switch to the HST )
  https://www.ietf.org/mail-archive/web/81attendees/current/jpgeHqPMf1SRj.jpg this is a sample of restaurant recepit in Quebec ( do not mind the barcode block, this is specific to quebec fiscal printing that uses a special device to generate those)

regards.

[Archanium]

Hey fabienkruba

I'll try to update them all. :)
Thanks for the information!

[joelpittet]

Why VAT in the zone?

[JoeMurray]

I'd remove VAT everywhere in the PR for Canadian Sales Tax as that term is never used in Canada.

[JoeMurray]

I'd remove VAT everywhere in the system as that term is never used in Canada.

[JoeMurray]

would be good to rename to remove vat

[Archanium]

I've updated it with most of the changes mentioned. :)

[joelpittet]

leftover vat

[dmitriy-01]

Will this be merged into master?

[bojanz]

Continued in #73