1. If I get married outside Hong Kong, do I need to notify the Hong Kong government and update my marital status?
There is no need to notify the Hong Kong government and update your marital status if you do not wish to do so. However, there may be a need to inform respective governmental departments concerned of your change in marital status for certain purposes such as registering spousal benefit or for tax purposes. It is also a criminal offence if you marry the same person (again) or another person in Hong Kong without disclosing that you are validly married outside Hong Kong.
It is advisable to first inform the Immigration Department for the update in marital status, by a letter or through sending in a form named “Notification of change of Particulars Previously Registered”.