Tax accounting issue

 History 

My company converted R11 tax setups to  R12 On Upgrade 

No R12 functionality was utilized. we use payables , we do NOT use receivables 

Problem  

having  approx 60  Legal entities operating in Canada  in 7-8 provinces, each LE requires individual tax accounting  

,The resultant  tax classification codes are by co by tax by province  and with  GST PST , HST taxes . the tax classification codes exceed 500 choices.

with centralized data entry , there is much rework required for wrong Tax classification Code  selection. 

Opportunity  

I have been assigned  responsibility to  re do the tax setup based on R12  re-implementation

using TCA jurisdictions, I would like to  set up the required  3 Taxes for Canada (HST, GST PST) with the resultant  tax classification Codes  having default  Liability  account CCID's