“Section 263(1)”

For revision under Section 263, the Assessing Officer's order must be both erroneous and prejudicial to the interests of the revenue; if either condition is not met, the revisionary jurisdiction cannot be invoked. An order is not erroneous merely because the Assessing Officer did not record the details of enquiries conducted, provided due enquiries were made.

Under Section 263, an assessment order is not erroneous and prejudicial to the interest of the revenue merely because the Principal Commissioner disagrees with the Assessing Officer's (AO) view, particularly if the AO has adopted one of two permissible views in law, unless that view is completely unsustainable. If due inquiries were made, the AO's order does not become erroneous solely because the fact of inquiries was not recorded.

The Commissioner cannot revise an assessment order under Section 263 merely because they hold a different opinion or believe a deeper inquiry was warranted if the Assessing Officer has applied their mind and conducted some inquiry. Revision under Section 263 is permissible only in cases of a complete lack of inquiry or non-application of mind by the Assessing Officer, not for merely inadequate inquiry.

The Commissioner cannot revise an assessment under Section 263 merely because the assessment order does not explicitly reflect an inquiry, or because the Commissioner holds a different opinion. An inquiry, even if considered inadequate, or an assessment based on a plausible view by the Assessing Officer after due examination, does not automatically make the order erroneous or prejudicial to the interests of the revenue.

An assessment order is erroneous and prejudicial to the Revenue's interests if the Assessing Officer accepts a sum offered as income by an assessee, even when that sum was not actually earned, thereby allowing revision under Section 263.

Expenditure that provides an enduring benefit should be amortized over its useful life, not allowed as a deduction in a single year, to prevent a distorted picture of profits. Specifically, premium paid on debentures for their issue should be amortized on a straight-line method over the life of the debentures.

An assessment order is erroneous and prejudicial to the interest of revenue if the Assessing Officer fails to make proper inquiries before accepting the assessee's statements or claims. The Commissioner can revise such an order under Section 263 without conducting further inquiries himself.

When there is a conflict between the decisions of non-jurisdictional High Courts, the view that favors the assessee should be preferred.