Compound Interest Calculator Hong Kong

Compound Interest Calculator for Hong Kong

Savings accounts and deposits in Hong Kong are priced off the Hong Kong Monetary Authority policy rate, which stood at 4.25% at the end of September 2026. National consumer price inflation was 1.92% in September 2026, so a saver earning exactly the policy rate would have a real return of 2.28% a year before tax.

Facts that change the answer

• Hong Kong Monetary Authority policy rate: 4.25% (September 2026, BIS series)
• Annual CPI inflation: 1.92% (September 2026)
• Real return at the policy rate: 2.28% per year (computed as (1 + 4.25%) / (1 + 1.92%) minus 1)
• Policy rate at each December: 2016 1%, 2017 1.75%, 2018 2.75%, 2019 2.49%, 2020 0.5%, 2021 0.5%, 2022 4.75%, 2023 5.75%, 2024 4.75%, 2025 4%
• Policy rate moves since January 2020 (month-end data): January 2020 2.49% to 2%; March 2020 2% to 1.65%; April 2020 1.65% to 1.11%; May 2020 1.11% to 0.62%; June 2020 0.62% to 0.5%; March 2022 0.5% to 0.75%; May 2022 0.75% to 1.25%; June 2022 1.25% to 2%; July 2022 2% to 2.75%; September 2022 2.75% to 3.5%; November 2022 3.5% to 4.25%; December 2022 4.25% to 4.75%; February 2023 4.75% to 5%; March 2023 5% to 5.25%; May 2023 5.25% to 5.5%; July 2023 5.5% to 5.75%; September 2024 5.75% to 5.25%; November 2024 5.25% to 5%; December 2024 5% to 4.75%; September 2025 4.75% to 4.5%; October 2025 4.5% to 4.25%; December 2025 4.25% to 4%; September 2026 4% to 4.25%
• In 7 of the last 10 years the December policy rate was above that year's average inflation

Worked example for Hong Kong

Start with HKD 50,000, add HKD 500 a month and use 4.25% compounded monthly. After 10 years you would have HKD 151,026 from HKD 110,000 of deposits; after 20 years HKD 305,438 from HKD 170,000. These amounts in Hong Kong dollar are only examples; real deposit rates offered by banks in Hong Kong are usually below or above the policy rate depending on the term and the bank.

To see what that balance is worth in today's money, take inflation into account: at 1.92% a year, HKD 151,026 in ten years has the buying power of about HKD 124,810 now. Recent history for Hong Kong's currency: 2020: 0.5% rate vs 0.3% inflation, 2021: 0.5% rate vs 1.6% inflation, 2022: 4.75% rate vs 1.9% inflation, 2023: 5.75% rate vs 2.1% inflation, 2024: 4.75% rate vs 1.7% inflation, 2025: 4% rate vs 1.4% inflation.

If you hold the money in a fixed deposit, the rate you lock in matters more than the compounding frequency. On HKD 50,000 over 10 years at 4.25%, switching from yearly to monthly compounding adds only HKD 611, while a rate 1 point higher adds HKD 8,004.

Sources: BIS central bank policy rates · BIS consumer price statistics. Checked 5 November 2026. For how the maths works, see the Compound Interest Calculator guide.