We test the equivalence of tax-inclusive, tax-exclusive and tax-rebate prices through a series of experiments differing only in their handling of the tax. Subjects receive a cash budget and decide how much to keep and how much to spend on various attractively priced goods. Subjects spend significantly more under tax-exclusive prices whereas total purchases under tax-inclusive and tax-rebate prices are similar. These results persist throughout most of the ten rounds despite feedback and the ability to revise purchases. The asymmetric response to tax liabilities and rebates highlights consumers' ability both to internalize and to willfully ignore hidden price components. (JEL D12, H25, H31)A n emerging empirical literature on price partitioning highlights firms' ability to increase consumer demand by not displaying the final price (see, e.g., Hossain and Morgan 2006; Chetty, Looney, and Kroft 2009). In particular, these studies demonstrate that when price components are shrouded or hidden such that the posted price is less than the all-inclusive price higher demand ensues. The lack of salience of the shrouded price components is the explanation typically put forth. Are consumers really so woefully unaware of the amount to be added at the checkout or might they consciously choose to ignore it? Moreover, how does consumer demand respond to price components that are deducted at the register such that the final price is below the initial price?In this paper, we introduce a series of carefully designed laboratory experimental treatments that, for the first time, address these questions. Specifically, we test the equivalence of tax-inclusive, tax-exclusive, and tax-deduction prices in a laboratory setting that admits controlled variation. A number of attractive goods highly discounted in price are presented to each subject who decides how much of his cash endowment to keep and how much to spend on purchases of each good. The subject repeats participants from numerous departmental seminars and conferences, and two anonymous referees for valuable comments. Ziv Ben-Naim provided excellent research assistance. We are grateful to Ben-Gurion University for funding the experiments. The analysis and conclusions set forth are those of the authors and do not indicate concurrence by the Board of Governors of the Federal Reserve Board or members of the research staff.