综上所述，交税主要是看你是什么status, resident 还是non-resident.
官方定义如下：
Resident Individual
You will be regarded as a tax resident if
• You have been in Singapore for at least 183 days in a calendar year;
• You have been physically present or working in Singapore for 3 consecutive years even though the number of days you are in Singapore is less than 183 days in the first and third year. See example below.
Non-Resident Individual
You will be regarded as a non-resident if you have been in Singapore for less than 183 days in a calendar year.
补充：
60 days or less：Non-Resident
Short-term employment income is exempt from tax. This rule does not apply if you are a director, public entertainer or exercising a profession in Singapore.
More than 60 days but less than 183 days：Non-Resident
Employment income is taxed at 15% or resident rates, whichever gives rise to higher tax.
183 days or more：Resident
All income is taxed from 0% to 22% from the Year of Assessment 2003.
