[kostas]

Mortgage interest payment is exempted only for a few years.. Below is the excerpt from the guide booklet:

7.3 Home Loan Interest

• You may claim deduction of interest paid by you in respect of a loan obtained for the purpose of acquiring a property in Hong Kong which was used by you as your place of residence, provided that the loan was secured by a mortgage or charge and the lending institution providing the loan to you was an approved one.
• This deduction can be claimed under Salaries Tax or Personal Assessment. It is granted to each person for 7 years of assessment, whether consecutively or not.