Block-assessment undisclosed income is a special code that excludes Chapter VI-A deductions and section 88 rebate.

Block-assessment computation of undisclosed income under Chapter XIV-B is a self-contained special regime. Income already returned before the search could not be treated as undisclosed without proper factual basis, so that issue was restored for fresh consideration with regard to the filed return. General reliefs available in regular assessment were excluded from this special scheme: deductions under Chapter VI-A were held inapplicable to undisclosed income computed for the block period, and rebate under section 88 was also unavailable because the special block-assessment rate under section 113 did not expressly permit it.

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Issues: (i) Whether the sum of Rs. 64,636 for assessment year 1992-93 could be treated as undisclosed income in the block assessment. (ii) Whether deductions under Chapter VI-A could be allowed against undisclosed income computed for the block period. (iii) Whether rebate under section 88 could be allowed in block assessment.

Issue (i): Whether the sum of Rs. 64,636 for assessment year 1992-93 could be treated as undisclosed income in the block assessment.

Analysis: Undisclosed income under sub-section (6) of section 158B covers income that has not been or would not have been disclosed for the purposes of the Act. The assessee had filed the return for the relevant assessment year before the search, and the assessment order did not explain the basis for treating that income as undisclosed. In these circumstances, the matter required reconsideration on the facts and in accordance with law.

Conclusion: The issue was set aside to the Assessing Officer for fresh consideration, with directions to take into account the return already filed by the assessee.

Issue (ii): Whether deductions under Chapter VI-A could be allowed against undisclosed income computed for the block period.

Analysis: Section 158BB(1) governs computation of undisclosed income in block assessment, and the Explanation read with the special scheme of Chapter XIV-B shows that carry-forward losses and similar allowances meant for regular assessment are not to be imported into block assessment. The scheme was treated as a self-contained special code for taxing undisclosed income, and the general deductions under Chapter VI-A were held inapplicable to such computation.

Conclusion: Deductions under Chapter VI-A were not allowable against undisclosed income in block assessment.

Issue (iii): Whether rebate under section 88 could be allowed in block assessment.

Analysis: The tax on undisclosed income under section 113 is at the special rate prescribed for block assessments, and the scheme of Chapter XIV-B was treated as excluding ordinary reliefs not expressly provided. Since the undisclosed income is taxed under the special block-assessment framework, rebate under section 88 was held not available unless specifically permitted, which it was not.

Conclusion: Rebate under section 88 was not allowable in block assessment.

Final Conclusion: The appeal succeeded only to the extent that the first issue was restored for reconsideration, while the claims for Chapter VI-A deductions and section 88 rebate were rejected on merits.

Ratio Decidendi: Block-assessment computation of undisclosed income under Chapter XIV-B is a special, self-contained regime that does not permit general Chapter VI-A deductions or section 88 rebate unless the statute expressly provides for them.

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