Patently erroneous return entries can be rectified under section 154 when the return as a whole shows the intended nil income.

A patent manual-entry error apparent from the return of income can be rectified under section 154 where the return, read as a whole, shows that the intended business income was nil. The Tribunal held that a single incorrect entry in processing under section 143(1) could not be isolated when the remaining entries, including the section 10A deduction and section 115JB computation, supported the intended nil income position. Because no debatable or investigative exercise was required, the error fell within rectification powers. The rejection of rectification was set aside and the return was corrected accordingly.

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Issues: Whether the erroneous manual entry in the return of income, resulting in excess taxable income being reflected in the processing under section 143(1), constituted an arithmetical or patent mistake capable of rectification under section 154.

Analysis: The return had to be read as a whole, and a single incorrect entry could not be treated in isolation when the remaining entries, including the deduction under section 10A and the computation of book profit under section 115JB, showed that the business income was intended to be nil. Section 143(1)(a) permits adjustments for arithmetical errors and incorrect claims apparent from the return, and the mistake here was a manual entry error that was apparent from the return itself. The mistake did not require any debatable or investigative exercise, and therefore fell within the scope of rectification. The same principle governing correction of a clear omission or patent error in the return supported allowing rectification.

Conclusion: The error was rectifiable under section 154, and the assessee was entitled to have the business income taken as nil.

Final Conclusion: The rejection of rectification was set aside, and the assessee succeeded in obtaining correction of the return as processed under section 143(1).

Ratio Decidendi: A patent arithmetical or manual-entry mistake apparent from the return of income can be corrected under section 154, and the return must be construed as a whole rather than by isolating one erroneous entry.

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