The Hong Kong Monetary Authority raised its base interest rate by 25 basis points to 4.25% on Thursday, following the US Federal Reserve’s decision to increase borrowing costs as concerns over inflation remain elevated.
The move marks the first increase in Hong Kong’s base rate since July 2023 and underscores the constraints imposed by the city’s currency peg to the US dollar. Hong Kong’s monetary system requires the HKMA to closely track US interest-rate movements because the Hong Kong dollar is maintained within a narrow trading band of 7.75 to 7.85 per US dollar.
The rate increase, however, has not yet translated into higher benchmark lending rates at the territory’s largest banks.
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HSBC and Standard Chartered said they would leave their best lending rates unchanged at 5% and 5.25%, respectively. Bank of China (Hong Kong) also kept its Hong Kong dollar prime rate at 5%. The three banks also left their Hong Kong dollar savings deposit rates unchanged. None of the lenders provided a reason for the decision.
The gap between the HKMA’s policy rate and commercial banks’ lending rates highlights how the transmission of monetary policy can depend on banks’ funding conditions, liquidity and competitive pressures rather than occurring immediately through customer borrowing costs.
The HKMA said the Federal Reserve’s rate decision was broadly in line with market expectations and reflected the US central bank’s concerns about the inflation outlook.
HKMA Chief Executive Eddie Yue warned that the rate increase could widen the interest-rate differential between the Hong Kong and US dollars, potentially creating pressure on the Hong Kong dollar.
“The Hong Kong dollar and US dollar interest rate differential will widen, and carry trade activities may cause the Hong Kong dollar to ease toward the weak side of the band,” Yue told reporters.
A weaker Hong Kong dollar would bring the currency closer to the weaker end of its permitted trading range against the US dollar, potentially requiring closer monitoring by the HKMA under the territory’s linked exchange-rate system.
The Federal Reserve raised US interest rates on Wednesday for the first time in three years and signaled that further increases could come in the months ahead. That outlook leaves Hong Kong exposed to additional changes in US monetary policy, regardless of domestic economic conditions.
Yue cautioned that uncertainty surrounding the US rate outlook could affect Hong Kong’s own interest-rate environment and urged the public to manage interest-rate risks carefully when making financial decisions.
The impact is relevant for borrowers with floating-rate debt, including mortgages and corporate loans. While the major banks have so far held their prime rates steady, further US rate increases could increase pressure on Hong Kong’s banking system and borrowers if local funding costs rise.
The HKMA said Hong Kong’s monetary and financial markets continued to operate in an orderly manner. It added that banks would consider factors including the supply and demand for funding, prevailing interest rates and their own funding-cost structures when deciding whether to adjust customer rates.
The decision therefore leaves Hong Kong in a familiar position under its dollar peg: the HKMA has limited flexibility to diverge materially from US monetary policy, while individual banks retain discretion over how and when changes in wholesale funding costs are passed on to customers.
For now, the 25-basis-point increase has been absorbed at the policy level without an immediate increase in the prime lending rates of the territory’s three major banks. The next test will be whether further US rate increases, or a sustained shift in Hong Kong dollar funding conditions, eventually force commercial banks to raise borrowing costs.