නිල පරිවර්තනයවෙනස් නොකළ පාඨය, Department of Government Printing වෙතින්
The service charge which any person or partnership is chargeable with for any relevant quarter shall, notwithstanding that no assessment has been made on such person or partnership by an Assessor, be paid to the
Commissioner-General on or before the twentieth day of the month immediately succeeding the end of that relevant quarter.