Maximum amount of income on which tax is not required to be paid is the basic exemption limit under the Income-tax Act. Under the old tax regime, for individual below 60 years of age the basic exemption limit is Rs 2.5 lakh. For senior citizens and super senior citizens, the basic exemption limit is Rs 3 lakh and Rs 5 lakh, respectively. Under the new tax regime, the basic exemption limit is Rs 3 lakh irrespective of the age.