“…We utilize several measures of tax avoidance that have been used in recent accounting studies, including total book-tax differences, discretionary permanent book-tax differences, and the cash effective tax rate (e.g., Dyreng, Hanlon, and Maydew 2008;Frank, Lynch, and Rego 2009;Rego and Wilson 2009). These measures reflect an array of tax planning activities, including standard tax planning practices that do not violate income tax rules (e.g., locating subsidiaries in low-tax foreign countries), as well as aggressive tax strategies that are considered abusive by the IRS and the Treasury Department (e.g., sale-in-lease-out transactions).…”