Hello, I am Keith, one of the experts on Just Answer, and pleased to be able to help you with your question.
HK companies are subject to Profits Tax as follows:
'Hong Kong Profits Tax is a tax levied on the net profits on business. Companies and individuals (sole proprietor) carrying on business in Hong Kong will be chargeable to Profits Tax given that the profits are sourced in Hong Kong.'
HK has an attractive low rate of taxation for companies, 16.5%. Personal tax rates are of the order of 15%. Hong Kong has a Double Taxation Treaty with the UK which precludes the same income stream being taxed in both jurisdictions. This is achieved by means of tax credits, the tax paid in one country being allowed as a tax credit against the liability in the other. I cannot advise you when HK tax must actually be paid. All the sources on the web are curiously opaque on this subject, but I will continue hunting.
As for money laundering do not worry. The actions of the HK company are perfectly legitimate. Multi national organisations do it all the time.
I do hope that you find my reply of assistance.
Thank you for your support.
I am still hunting for when HK tax is actually payable without success!