Calculation of VAT on PO Sub Total

Question

Hi Friends,
  We have requirement to calculate VAT on Basic+Customs Duty, As per TAXID (TAx Calculation Procedure for Indonesia) system is VAT on Basic Amount (First condition record) in PO. But we want on Basic +Customs, Can anybody suggest if way out for the same.
Regards,

Answer 1

Friends,
For aching the same i made some change in My Tax Procedure mentioned below.
100     0     BASB     Base Amount               
105     0     J1AA     VAT Disc. Customs     100       
109     0          Subtotal                          100     105
110     0     MWAS     Output Tax                          100                                      MWS
120     0     MWVS     Input tax                          109                                      VST
140     0     MWVN     Non-deduct.Input Tax     100                                      NAV
150     0     MWVZ     Non-deduct.Input Tax     100                                      NVV
160     0     MWID     Luxury Tax                           100                                      LUX
In above procedure i have added condition 105 and 109. For condition 120 i have change base from 100 to 109.
Now while creating the Tax code for the same system giving error as "Define the tax code on level 109"
Can antone help me on the same.
Regards,