In Hong Kong, both corporate and personal taxation is levied by the government.

Corporate taxation:

- The corporate tax rate in Hong Kong is currently 16.5% on assessable profits.

- Companies are required to file their tax returns within one month of the issue of the notice of assessment.

- Quarterly installments of corporate taxes are also required to be paid.

Personal taxation:

- Personal income tax rates in Hong Kong are progressive, with rates ranging from 2% to 17%.

- Individuals are only subject to tax on income earned in Hong Kong, and not on income earned outside Hong Kong.

- Individuals are required to file their tax returns by April 30th of the following year.

- There is also a salaries tax, which is levied on individuals at a rate of up to 15% on their income from employment.

The tax payment process in Hong Kong involves several steps:

1. Register with the Inland Revenue Department (IRD).

2. Obtain a tax file number (TFN) from the IRD.

3. Keep accurate records of all income earned and expenses incurred.

4. Calculate the amount of tax owed based on the relevant tax rates and deductions.

5. Make quarterly tax payments by the due dates, either online or in person at the IRD office.

6. File annual tax returns by the due date, either online or in person at the IRD office.

The tax calendar for payments in Hong Kong is as follows:

- Quarterly payments: April 30th, August 31st, November 30th, and February 28th (or 29th in a leap year).

- Annual tax returns: April 30th of the following year.

It's important to note that failure to pay taxes on time can result in penalties and interest charges. Therefore, it is important to keep track of all tax obligations and to make timely payments.