This is a conceptual paper on the analytics of the phenomena of economic corruption. And it is very much a working paper, begging comments. The paper concentrates on what appears on first reflection a redundant question -what is the impact of corruption? The almost knee jerk answer is loss of income. However, when modelling economic corruption we run into the problems of determining the questions of: loss of income for whom - the principal, the agent, the state, the consumer, the economy? - how? and by how much?