Exchange-rate-centered monetary policy

Unlike most central banks, which steer their economies through a domestic policy interest rate, the Monetary Authority of Singapore manages monetary policy by targeting the exchange rate itself, specifically the Singapore dollar's nominal effective rate against a trade-weighted basket of currencies, known as the S$NEER. MAS deliberately chose this unusual framework because Singapore's combined exports and imports run above 300 percent of GDP and domestic spending has an unusually high import content, meaning swings in the exchange rate pass through to domestic prices far more quickly and reliably than interest-rate changes would. In practice, MAS lets the S$NEER float within an undisclosed policy band, periodically adjusting the band's center, width and rate of appreciation or 'crawl', intervening directly in spot foreign-exchange markets rather than setting a benchmark lending rate, and reviewing the settings twice a year. This exchange-rate-centered approach explains why Singapore's interest rates are largely a byproduct of global capital-market conditions and the exchange-rate stance, rather than an independent lever, and why MAS's policy statements focus on the currency band rather than a rate decision.