“live link”

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.

Reassessment of income, especially after a summary assessment under Section 143(1), requires the Assessing Officer to possess fresh, tangible material to form a reason to believe that income has escaped assessment; a mere reappraisal of existing records or a change of opinion without new material is not permissible.

An assessment can be reopened if there is tangible material indicating escapement of income, demonstrating a live link between the material and the reasons recorded for reopening. The Assessing Officer must apply their mind to the material facts, and the sanction under section 151 should not be based on borrowed satisfaction.

Reassessment based solely on information from the Investigation Wing, without the Assessing Officer conducting further inquiry or demonstrating an independent application of mind, is unjustified and invalid.

Reassessment proceedings initiated under Section 147 beyond four years from the end of the relevant assessment year are invalid unless the assessee failed to disclose fully and truly all material facts necessary for assessment. Without such failure, the notice issued under Section 148 is time-barred and without jurisdiction.

The Assessing Officer's belief that income has escaped assessment, leading to the reopening of an assessment, is a matter of subjective satisfaction. The materials available at the time of forming this belief do not need to conclusively prove the escapement of income.

A live link of third-party information can form the basis for reopening an assessment under Section 148, provided it contains material facts necessary for assessment. The Assessing Officer must demonstrate a "reason to believe" that income has escaped assessment, which can be satisfied by such information even if it pertains to other assessees or relates to accommodation entries.

The Supreme Court broadly defined 'information' for reassessment under Section 147 to include new facts, external sources, material already on record, or a correct understanding of law from judicial decisions. This definition enables reopening assessments based on subsequent information or mistakes.