Yes, TRCs can receive interest from the date of purchases to the date of payment of tax. The certificates bear simple interest and interest is calculated monthly base. Interest only credited when certificates are used for tax pay. However, no interest calculation when repaid to its holder. Hong Kong Government Gazette published on 2 June 2023 contains a Legal Notice to the effect that the Secretary for Financial Services and the Treasury has authorised a change in the rate of interest payable on Tax Reserve Certificates. From 5 June 2023, the new annual rate of interest will be 0.8083 per cent against the current rate of 0.7667 per cent, i.e. the new rate will be HK$0.0674 per month per HK$100.