TAXES OUTSIDE USA,CAN,AUS

Hello,

We have the need to calculate taxes for Countries outside USA,CAN, AUS,NZ. As far as we know we have to define them as normal PDBAs but what we are wondering is if some functionalities of the system work in any case or only for the above localisations. More specifically:

1)Tax areas set up: Can they be used in someway in conjuction with the Normal PDBAs that we will have been defined as taxes? And if Yes, how?

2) Has the field 'Effect on Gross/Net ' (CHCK) a general usage for taxable/non taxable and if yes where this Information is stored when the Payroll is run? Or is this Information available as a variable in Pre-Payroll DBA Calculation Control (P07901)?