The Institute on Taxation and Economic Policy (ITEP) is a non-profit, nonpartisan think tank that works on state and federal tax policy issues.

ITEP was founded in 1980, and is a 501(c)(3) tax-exempt organization.

ITEP's quantitative analyses are utilized by observers from across the political spectrum and by analysts within government.

[2][3] ITEP has been characterized as nonpartisan[4][5][6] and left-leaning.

[7][8] They are associated with the liberal lobbying organization Citizens for Tax Justice.