1. Ms. Beenish has earns salary income of Rs.50,000/- per month in private company at Karachi, eventually Corona virus may cause lock down in entire country, therefore on month of March, she worked 15 days and got full salary. In the month of April, she did not work & also got full salary. In the month of May, she received half salary & unfortunately, from the month of June-2020, she is not going to received salary, however she remain an employee of the same company.
2. Does she need to file her income tax return as she gets no salary in the month June-2020? Answer shall be in (Yes or No) with reason?
3. Calculate her annual salary income as per tax year monthly wise?
4. Salary & Business individual tax slab as follows:

Re.1/ to Rs.400,000/- No tax

Rs.400,001 to Rs.450,000/- Rs.1,000 tax

Rs.450,001 to Rs.500,000/- Rs.2,000 tax

Rs.500,001 to Rs.900,000/- Rs.9,000 tax

Mention her annual salary tax amount?