Yehonatan Givati (John M. Olin Fellow in Law & Economics, Harvard Law School) has posted Resolving Legal Uncertainty: The Unfulfilled Promise of Advance Tax Rulings, 29 Va. Tax Rev. ___ (2009), on SSRN.  Here is the abstract:

Advance tax rulings allow taxpayers to achieve certainty about the tax consequences of contemplated transactions, and are thus considered indispensable in the modern world of tax administration and compliance. After providing empirical evidence of tax law uncertainty, which should give rise to a demand for advance tax rulings, the article shows that advance tax rulings are in fact infrequently used. To explain this counterintuitive finding the article analyzes the taxpayers’ strategic considerations when deciding whether to request an advance tax ruling. The strategic disadvantages of applying for an advance tax ruling are shown usually to outweigh the strategic advantages of such a request. Since the same strategic considerations apply when taxpayers decide whether to request an advance pricing agreement – a new procedure for resolving transfer pricing disputes – this analysis also explains why, despite considerable attention from scholars and practitioners in recent years, advance pricing agreements have been infrequently used, and are therefore unlikely to resolve the transfer pricing problem – probably the most significant problem in modern international taxation.