Debatable deduction computation cannot be corrected as a prima facie mistake in summary assessment

A debatable interpretation of deduction provisions could not be treated as an apparent mistake for summary adjustment under section 143(1)(a) of the Income-tax Act, 1961. Recomputing deduction under section 80-I by setting off brought forward losses and depreciation of another industrial undertaking required examination of the interaction between section 80AB and section 80-I, so it was not a patent error and no prima facie adjustment was justified. The same applied to deduction under section 80HHC: whether brought forward losses and depreciation could be adjusted before computing export deduction was also a matter requiring detailed reasoning, not summary correction. The assessee's deductions were therefore protected from recomputation in the summary assessment process.

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Issues: (i) Whether the Assessing Officer could make a prima facie adjustment under section 143(1)(a) by recomputing deduction under section 80-I after setting off brought forward losses and depreciation of another industrial undertaking; (ii) Whether the Assessing Officer could make a prima facie adjustment under section 143(1)(a) by recomputing deduction under section 80HHC after setting off brought forward losses and depreciation.

Issue (i): Whether the Assessing Officer could make a prima facie adjustment under section 143(1)(a) by recomputing deduction under section 80-I after setting off brought forward losses and depreciation of another industrial undertaking

Analysis: The deduction claimed under section 80-I was linked to the profits of one industrial undertaking, while another unit had accumulated losses. The question whether the losses of one undertaking must be adjusted against the profits of another undertaking before computing the eligible deduction involved competing lines of authority and required examination of the interaction between section 80AB and section 80-I. The issue was not obvious or free from controversy and could not be treated as a patent error for the purposes of summary adjustment under section 143(1)(a).

Conclusion: The prima facie adjustment under section 143(1)(a) in relation to deduction under section 80-I was not justified.

Issue (ii): Whether the Assessing Officer could make a prima facie adjustment under section 143(1)(a) by recomputing deduction under section 80HHC after setting off brought forward losses and depreciation

Analysis: The computation of deduction under section 80HHC was held to be outside the control of section 80AB on the reasoning followed from the relevant High Court authorities. The question whether brought forward losses and depreciation could be set off for working out the export deduction, and whether such recomputation could be made in summary proceedings, was treated as a debatable matter requiring detailed reasoning rather than a patent adjustment.

Conclusion: The prima facie adjustment under section 143(1)(a) in relation to deduction under section 80HHC was not justified.

Final Conclusion: The Revenue's challenge to the deletion of the summary adjustments failed, and the assessee's deductions were protected from recomputation in the summary assessment process.

Ratio Decidendi: A claim that turns on a debatable interpretation of the deduction provisions and requires long-drawn reasoning cannot be treated as an apparent mistake liable to prima facie adjustment under section 143(1)(a) of the Income-tax Act, 1961.

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