Question:

If i (malaysian) work with singaporean company which don't have any office in Malaysia and do some work in malaysia (few months), also do some work in indonesia and australia, the salary paid by my employer in singapore, do i have to declare the income received in malaysia to IRB? or should i just declare to IRAS?

if i do work in malaysia, i stay in malaysia until work done. same goes to indonesia and australia. my salary is monthly based. no tax deduction to IRB.

do i have to portion it according to no. of months?

what if i required to pay all income tax in singapore since my employment income came from singapore, can i being taxed both malaysia and singapore?

No. i am employee of singaporean company which dont have any office in Malaysia. i am malaysian nationality.

I do read public ruling regarding seconded things. let say i am an employee of malaysian company doing some work in singapore. my income from singapore would be the income from my employment in malaysia. then i should declare it in malaysia.

my question is the other way round. just need confirmation and little bit clarification.

Yes. It seems i am seconded to malaysia. and should report to IRAS but afraid that my income will also be taxed in malaysia. if tax in malaysia, i may apply for relief (double tax agreement) in singapore.

now the question is do my income be taxed in malaysia? ^^ i tried read those rulings but later getting more confused. ;p

roughly 3-5 months. depending on the job. sometimes stay few weeks then travel to indonesia/australia. then travel back to malaysia/singapore.