China maintains a dual currency system with CNY and CNH to balance domestic monetary control with international trade settlement.
One Country, Two Markets: The Dual Currency Architecture
To anyone newly exploring international currency markets, looking up the Chinese currency can be bewildering. You will encounter references to the 'Renminbi' (RMB), the 'Yuan', and two distinct three-letter ISO currency codes: CNY and CNH. While both represent the legal tender of the People's Republic of China, they operate under fundamentally different regulatory regimes and pricing mechanisms.
CNY represents the onshore Chinese Yuan traded exclusively within mainland China, governed strictly by the State Administration of Foreign Exchange (SAFE) and the People's Bank of China (PBOC). CNH represents the offshore Chinese Yuan traded outside mainland borders, predominantly in international financial centers such as Hong Kong, Singapore, London, and Frankfurt.
How Onshore CNY is Regulated and Constrained
The onshore CNY does not trade freely like the US Dollar or Euro. Every morning at 9:15 AM Beijing time, the People's Bank of China publishes a daily reference rate known as the 'central parity fix'. During the trading day, the onshore CNY is only permitted to fluctuate within a strict 2% band above or below this official PBOC midpoint.
Furthermore, China maintains stringent capital account controls. Foreign entities and domestic citizens face rigorous documentation requirements and strict quotas when attempting to convert CNY into foreign currencies and transfer capital abroad.
Offshore CNH: Free Market Liquidity and Internationalization
Established in 2010 through a landmark agreement between the PBOC and the Hong Kong Monetary Authority (HKMA), the offshore CNH market was conceived to accelerate the internationalization of China's currency without surrendering domestic capital controls.
Unlike onshore CNY, CNH is not subject to daily trading bands or government intervention limits. Its exchange rate is dictated purely by international free-market supply and demand, international trade settlement, and speculative positioning by global hedge funds and multinational corporations.
What the Spread Between CNY and CNH Tells the World
Because capital cannot flow frictionlessly between mainland China and offshore hubs, a price discrepancy—known as the CNY/CNH spread—persistently exists between the two exchange rates.
When CNH trades at a noticeable discount to CNY, it signals that international global investors are bearish on Chinese economic growth or anticipate impending yuan devaluation. Conversely, when CNH trades at a premium, it reflects robust global institutional demand for Chinese assets and cross-border trade settlement.