I need to calculate 50% tax on government customers in SalesTaxII.
Avalara does not provide the rates for SalesTax II at this time. However, it is possible to manually add these rates to your own system.
To do this you would need to add the government rates to existing tax records as a type O-ther or create completely new records for the jurisdictions that you do business in.
You would then need to modify your connector and/or your customer master file to access these special rates at calculation time.