KARACHI: The tax officials are facing a daunting challenge to achieve around 16 percent growth in revenue collection during this month – last of the current fiscal year – over an average monthly collection to meet the annual target in the face of coronavirus panic, it was learnt on Thursday.A senior official told The News that the revenue collection is in full swing as June is the last month of the fiscal year. The efforts require physical presence of staff in order ensure timely payment...