"However, one needs to give a schematic interpretation to the words 'reason to believe' failing which, we are afraid, section 147 would give arbitrary powers to the Assessing Officer to reopen assessments on the basis of 'mere change of opinion', which cannot be per se reason to reopen. We must also keep in mind the conceptual difference between power to review and power to reassess. The Assessing Officer has no power to review; he has the power to reassess. But reassessment has to be based on fulfilment of certain precondition and if the concept of 'change of opinion' is removed, as contended on behalf of the Department, then, in the garb of reopening the assessment, review would take place. One must treat the concept of 'change of opinion' as an in-built test to check abuse of power by the Assessing Officer. Hence, after April 1, 1989, the Assessing Officer has power to reopen, provided there is 'tangible material' to come to the conclusion that there is escapement of income from assessment. Reasons must have a live link with the formation of the belief. Our view gets support from the changes made to section 147 of the Act, as quoted hereinabove. Under the Direct Tax Laws (Amendment) Act, 1987, Parliament not only deleted the words 'reason to believe' but also inserted the word 'opinion' in section 147 of the Act. However, on receipt of representations from the companies against omission of the words 'reason to believe', Parliament reintroduced the said expression and deleted the word 'opinion' on the ground that it would vest arbitrary powers in the Assessing Officer.”
