Tax tension free planning always save tax and invest in ppf and Nps and lic policies and mutual funds tax exemption. Tax slave upto 7 lacs nil individual partnership firm corporate file ITR must be with us send details if pan card even no income. 

Every Resident or Non resident of India who earns income within India is subject to income tax based on the certain limit & exemption. Your income could be from salary, interest income from savings, income from mutual funds, sale of property or business or professional income.