“Section 151(3)”

An Assessing Officer cannot initiate reassessment proceedings under Section 147 of the Income Tax Act based on a mere change of opinion. Reassessment is permissible only when there is fresh tangible material leading to the belief of income escapement, not merely a review of existing facts.

For assessments under Section 153C, a notice is legally unsustainable if there is no incriminating material correlated to the specific assessment years for which reassessment is sought.

When a notice under Section 148 of the Income Tax Act is issued, the Assessing Officer is bound to furnish reasons for reopening upon the assessee's request and must dispose of the assessee's objections to the notice by passing a speaking order.

For reassessment proceedings under Section 148, the Assessing Officer only needs prima facie material to have a reason to believe income has escaped assessment. Conclusive proof or evaluation of the sufficiency and correctness of such material is not required at the stage of issuing the notice.

For reassessment proceedings, the 'reason to believe' that income has escaped assessment must be based on some material and not mere suspicion, establishing a live link between the information and the belief. Furthermore, for reassessment beyond four years, there must be a specific finding of the assessee's failure to disclose fully and truly all material facts.

The Assessing Officer loses jurisdiction and the entire reassessment becomes invalid if no addition is made in respect of the income that formed the basis of the reopening. Explanation 3 to Section 147 does not permit assessing other escaped income unless an addition is made for the original income forming the reason to believe.

Completed assessments can be interfered with under Section 153A or 153C only on the basis of incriminating material unearthed during the search, necessitating a direct correlation between the discovered material and the power to assess or reopen concluded assessments.

Assessments under Section 153A cannot be sustained without any incriminating material found during the search that substantiates the additions. This principle applies even to completed assessments where no additional income is disclosed.