Haitao Cheng, Jota Ishikawa, 16 September 2021

As a result of global warming, carbon taxes and emissions trading policies are in the spotlight. However, lack of cross-country coordination can cause carbon leakage and increases in emissions. This column analyses the effectiveness of carbon taxes and border tax adjustment policies in reducing emissions and shaping firms’ decisions on abatement investment and firm location. It shows that a higher carbon tax can sometimes lead to higher global emissions and discourage investment in clean technology. Likewise, border tax adjustments should be designed carefully to ensure lower emissions and compatibility with WTO rules. 

Assaf Razin, Efraim Sadka, 18 December 2017

The ongoing advance of globalisation has created a genuine need for international tax reforms. This column explores potential reforms and their likely effects, using a model with flexible prices. Residence-based income taxation is shown to have welfare advantages over source-based taxation, though at the cost of a larger trade deficit. Non-transitory border taxes are shown to be ineffective at reducing this deficit.

William Nordhaus, 08 October 2018

President Trump’s doctrine on trade represents a radical break with previous US policy. This column, the first of two examining the Trump doctrine, argues that he embraces fallacies as facts, and that the efforts to reform tax are flawed and will make tax law more complex. If enacted, the Auerbach-Ryan Tax Plan would be a mechanism by which the US government collects taxes to benefit rich citizens at the expense of the country's trading partners.

Willem Buiter, 22 March 2017

A border tax adjustment from origin-based taxation to destination-based taxation is under consideration for corporate profit tax in the US. This column investigates the implications of such an adjustment for the nominal exchange rate, assuming the real equilibrium of the economy is unchanged. While conventional wisdom is that the currency of the country implementing the adjustment will appreciate by a percentage equal to the VAT or corporate profit tax rate, a depreciation of the same magnitude is just as likely. 

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