If you earn (after EPF deduction) a minimum of RM 34,000 annually, then you must file a tax return, unless you are exempted from doing so under the conditions set out below.
PCB as Final Tax
If the following conditions are satisfied, you can choose not to file a tax return as the PCB paid will be considered as final tax:
Your only source of income is your employment income; and
you have been working for the whole tax year with the same employer; and
your employer has been deducting PCB from your salary correctly; and
your taxes are not borne by your employer; and
you have not opted for a joint assessment with your spouse.
If any of the above conditions are not met, then the exemption does not apply and you must file a tax return.