The use of tax incentives for economic development is growing among st
ates. This growth is partially caused by a response to new incentives
of neighboring states, and similar incentive laws are passed in the in
terest of remaining competitive. As a result, many states have adopted
tax incentives not well founded on economic theory or empirical evide
nce. This article draws on the latter to develop ten principles that s
tates can employ to enhance the fairness and effectiveness of tax ince
ntives. To illustrate their application, the principles are used to ev
aluate the state of Georgia's incentive programs.