The People's Bank of China (PBOC) is expected to set the daily USD/CNY reference rate at 6.7973, according to a Reuters estimate, ahead of the fixing's customary publication at around 0115 GMT (2115 US Eastern time the previous evening). For the currency pair, a lower number denotes a stronger yuan, since fewer yuan are needed to buy one dollar. The fixing has become one of the most closely watched signals in Asian currency markets, and its importance has grown over the past month as Beijing has shifted from restraining the yuan's rise to steering it gradually higher.

Under China's managed float, the onshore yuan is permitted to trade up to 2% either side of the midpoint set each morning. The central bank arrives at that midpoint by weighing the previous session's close, movements in the US dollar and other major currencies, broader global foreign exchange conditions, and domestic priorities including capital flows, growth and financial stability. Because the calculation leaves room for judgement, the fixing also serves as a tool for shaping expectations.

Once the rate is published, onshore trading proceeds within the band. If pressure pushes the yuan toward either limit, the PBOC can respond by buying or selling the currency directly, adjusting liquidity, or acting through state-owned banks. Markets therefore treat the fixing as a statement of intent: a midpoint stronger than forecast typically signals resistance to depreciation, while a weaker one can indicate acceptance of a softer currency, or discomfort with how quickly it is gaining.

For close to a year, the second message prevailed. The PBOC consistently set the midpoint weaker than market forecasts, which traders interpreted as an effort to slow appreciation. That gap was at its widest since February in late August, shortly after the yuan hit a three-and-a-half-year high against the dollar.

September marked a turning point. The central bank lifted the fixing for eight consecutive sessions, its longest such run since 2023, taking the midpoint to its strongest level since February 2023. The onshore yuan (CNY), which trades in the mainland's interbank market, climbed to levels last seen in January 2023, while the offshore rate (CNH), which changes hands in centres such as Hong Kong, reached its firmest since July 2022. Even so, the fixing continues to be set well below estimates, at one point by more than 500 pips — 0.05 in the rate — against a Reuters survey, suggesting Beijing is easing the brakes rather than releasing them entirely.

Goldman Sachs analysts tied the firmer fixings to the run-up to a Trump-Xi summit, a pattern they said matches past episodes of diplomacy, and expect policymakers to remain comfortable with steady, gradual gains.

The underlying trade-off has not changed. A stronger yuan supports capital stability and lowers import costs, but rapid gains could hurt exporters while the domestic economy remains soft. The daily gap between the fixing and consensus forecasts remains the clearest guide to far Beijing will let the yuan run, and whether that tolerance outlasts the summit.