Research to measure level of corruption is a daunting task and need a good tool in order to get a good result. The main reason why it is extremely hard to measure corruption is because of the nature of the phenomena itself, which is by default will never conducted openly, often concealed very effectively.

The research on corruption phenomena is one of the main activities of Transparency International Indonesia since its establishment in 2000. The Indonesian Corruption Perception Index Survey (CPI) is one of the relied products of TI-Indonesia, and had twice been launched to this day

Procurement of goods, works and other services by public bodies alone amounts on average to between 15% and 30% of Gross Domestic Product (GDP), in some countries even more. Few activities create greater temptations or off er more opportunities for corruption than public sector procurement. Damage from corruption is estimated at normally between 10% and 25%, and in some cases as high as 40 to 50%, of the contract value.