commission calculator for two typical online trading platforms for SGX in SGD, Standard Chartered Bank and Lim & Tan Disclaimer: the values calculated work for me but I have noticed the values differ a bit due to rounding

commSGX.py

#Sample Contract Value
vol=1000
price=10
volprice=vol*price

def commSCB(volprice):
  "SCB commission is fixed 0.2%"
  brokerage=volprice*0.2/100
  clearingfee=0.04/100*volprice
  #no SGX trading fee
  GST=0.07*(brokerage+clearingfee)
  total=brokerage+clearingfee+GST
  return total
  
print "SCB commission $",commSCB(volprice)

def commLT(volprice):
  "LimTan online trade commission is  0.28% (up to $50,000) min $25"
  commlist=[25,volprice*0.28/100]
  brokerage=max(commlist)
  clearingfee=0.04/100*volprice
  tradingfees= 0.0075/100*volprice
  GST=0.07*(brokerage+clearingfee+tradingfees)
  total=brokerage+clearingfee+GST
  return total
  
print "LimTan commission $",commLT(volprice)