The Two-Pillar Policy for the RMB
Abstract
In this paper we document stylized empirical facts about recent exchange rate(RMB) policies in China. The formation mechanism of the central parity is based
on the "two-pillar approach" that balances RMB index "stability" and exchange rate
"flexibility." We then develop a tractable no-arbitrage model of the RMB under the
"two-pillar approach." Using the model we estimate the fundamental exchange rate,
the probability of continuation of the two-pillar approach in the future, and the weights
put on both pillars. Our model is able to predict both the end of the two-pillar policy
in May 2017 when an additional unspecified "countercyclical factor" was introduced
for the first time, and the return to the two-pillar policy in January 2018 when the
countercylical factor was suspended. The estimated model not only fits the spot rate
and option prices well in the sample, but also forecast future central parity and spot
rates out of the sample.