Economic theory has attempted to identify the conditions under which c
orruption has particularly harmful effects. This article evaluates the
se theories and argues that the classifications offered are misleading
. Very successful interventionist states have suffered from corruption
just as much as very unsuccessful ones. Policy responses to corruptio
n require an understanding of the effects of corruption and the determ
inants of these effects. The fact which appears to have a strong effec
t in determining the harmfulness of corruption is the balance of power
between the state and its clients. An alternative classification of t
he effects of corruption is suggested on this basis.