With the rise of complex, globalised supply chains is the real effective exchange rate (REER), the most commonly used measure of competitiveness, now outdated? If it is, what should replace it? This column presents a ‘Value-Added REER’ and shows that it differs substantially from the conventional REER. Because it is possible to construct a new Value-Added REER from existing data, policymakers interested in improving their understanding of competitiveness might well consider including it in their toolbox.

As the oft-cited iPhone example illustrates, production has become increasingly fragmented across countries. This column presents recent research, however, suggesting that this trend may be reversing for manufacturing plants in the US. It shows that intermediate goods account for a decreasing fraction of output value, while industries that are closer to the final consumer contribute to an increasing share of GDP.

What can the iPhone tell us about the trade imbalance between China and the US? This column argues that current trade statistics greatly inflate the value of China’s iPhone exports to the US, since China's value added accounts for only a very small portion of the Apple product's price. Given this, the renminbi’s appreciation would have little impact on the global demand for products assembled in China.