Section 99 : Assessment of tax:
1) In cases where any person has submitted the income return of any income year, setting out the following amounts, on the date of submission of the return, the tax of the income return shall be deemed as if it were assessed:-

a) The amount of tax mentioned in the income return and payable by the person mentioned in Clauses (a) and (b) of Section 3 in that income year, and

b) The amount of tax mentioned in the income rerun and due and payable in that year.

2) In cases where any person does not submit the income return of any income year, tax shall be deemed to have been assessed as follows on the due date for submission of the tax return until the tax return is submitted:-

a) The amount of tax payable by that person in that year shall be equal to the sum of the amount of tax deducted from the amount received pursuant to Chapter-17 and the amount paid in installment for that year pursuant to Chapter-18, and

b) Tax shall not be deemed due and payable as per tax assessment.