Though Explanation 2 of s. 147 authorizes the AO to reopen an assessment wherever there is an "understatement of income", the AO is not entitled to assume that there is "understatement of income" merely because the assessee's income is "shockingly low" and others in the same line of business are returning a higher income. The invocation of the jurisdiction u/s 147 on the basis of suspicions and presumptions cannot be sustained

Rajendra Goud Chepur vs. ITO (AP & T High Court)

Without any concrete facts, reopening cannot be ordered merely on the presumption that the returned income is very shockingly lower than the total gross receipts. Therefore, we are of the considered view that the Assessing Officers completely erred in reopening assessments on the basis of either a suspicion that there is suppression of income or on the basis that persons in the same line of business are returning a higher income. Without even mentioning the comparables, no initiation of proceedings under Section 147 can be made