“…Most of these studies assume MNEs to use one set of transfer pricing books (Halpirin & Srinidhi, 1991;Elitzur & Mintz, 1996;Schjelderup & Sorgard, 1997;Sansing, 1999;Haufler & Schjelderup, 2000;Smith, 2002a): they derive the optimal transfer price for each intrafirm transaction that simultaneously serves tax and performance evaluation goals. In contrast, a limited number of recent studies (Baldenius et al, 2004;Smith, 2002b;Hyde & Choe, 2005) model two distinct transfer prices, one to serve evaluation purposes and the other one to serve tax purposes. In practice, most MNEs insist on using one set of prices, 'both for simplicity and in order to avoid the possibility that multiple transfer prices become evidence of manipulation in any disputes with the tax authorities' (Baldenius et al, 2004, 592;Ernst & Young, 2001.…”