Although tax directors are responsible for one of the firm’s largest outflows of cash and one of the largest expenses on the income statement, almost nothing is known about how these executives are compensated. To the best of our knowledge, this is the first paper to directly study the link between the incentives of tax directors and measures of the extent of their firm’s tax planning. Overall, our analyses of the book-tax gap, its components, the cash effective tax rate, and alternative measures of ‘‘tax aggressiveness’’ provide little evidence that our sample of large, publicly traded firms explicitly incentivize their tax function to undertake measures to lower the firm’s contemporaneous cash tax burden.