Finance minister P Chidambaram has told top income tax officials to keep a close tab on those not filing tax returns and ensure that the tax collection target for the current financial year is met. Inaugurating the annual conference of chief commissioners and director generals of income tax, Chidambaram asked the income tax officials to use modern tech tools in a focused to detect tax evaders to widen tax base and deepen tax collections. "This year you have to ensure that the 100% collection target is achieved..," he told the conference. The minister said the department should especially focus on those not filing returns or those who had stopped filing for some reason. "We are in favor of intelligence and technology-based tax collection system which is both non-intrusive and non-evasive," Chidambaram said and added that the Central Board of direct taxes had assured him that it will not only achieve the targets for 2013-14 but would also make every effort to exceed the target.