Section 69C of the Income Tax Act

The Revenue is entitled to look behind the apparent form of a transaction to discover its true nature, applying the test of human probabilities and surrounding circumstances. If transactions defy logic or are unnatural, they can be treated as bogus, even if supported by some documentation, especially in cases of cash credits or unexplained investments.

Tax authorities must judge evidence using the test of human probabilities and consider the apparent as real until there are reasons to believe it is not. They can rely on circumstantial evidence and the preponderance of probabilities to determine the genuineness of transactions.

When purchases are unproved or presumed to be from the grey market, the entire amount of such purchases should not be disallowed; instead, income can be estimated by applying a reasonable gross profit rate to the unaccounted sales or turnover, especially in assessments arising from search proceedings involving seized documents.

Adverse material or evidence collected by the Assessing Officer behind the assessee's back, without providing it to the assessee or affording an opportunity for cross-examination, has no evidentiary value and cannot be relied upon to make additions.

The Supreme Court held that while legitimate tax planning is permissible, transactions structured as a "colourable device" or "subterfuge" solely to avoid tax are impermissible. It mandates a judicial shift to look beyond the form to the substance of a transaction, allowing the lifting of the corporate veil in tax evasion arrangements.

An income tax assessment or addition cannot be sustained solely on the basis of suspicion, surmises, or conjectures, as strong suspicion does not amount to proof. The revenue authorities must rely on concrete evidence and material to frame an assessment.

The onus to prove that an apparent transaction or explanation is not real lies with the person who claims it to be so. If an assessee provides a plausible explanation for a transaction, the revenue must establish that the apparent transaction is not genuine.

The Supreme Court emphasized that in the absence of concrete rebuttal by the assessee, circumstantial evidence holds significant weight, applying the doctrine of preponderance of probability, particularly when assessing undisclosed income or unexplained cash credits.

The principle of finality dictates that stale issues should not be reactivated, and lapse of time brings repose to judicial and quasi-judicial controversies. A Commissioner cannot substitute their judgment for the Assessing Officer's unless the assessment order is legally erroneous, not merely less elaborate, thus limiting revisionary powers under Section 263.

In search assessments conducted under Section 153A of the Income-tax Act, additions to the assessee's income can be made even in the absence of incriminating material found during a search operation conducted under Section 132.