How much tax is too little, and how much is too much? I hadn't given this a lot of thought myself, but an 18% sales tax rate does seem a teensy bit excessive.
The problem with every system of taxation is that there is little to no accountability. I don't mind being asked to pay up for a common good, as long as I can see exactly how my payment is being utilized. Really, I should be able to trace the journey of every dollar (or rupee) starting from my pocket all the way to the pocket of any other private citizen.