Unexplained expenditure in block assessment: source-focused test prevents additions where no search-found material; netting of interest allowed for benefit computation.

Applicability of unexplained expenditure rules was confined to the source of expenditure; therefore treating expenditures as unexplained under the source-focused doctrine was incorrect and such additions were appropriately deleted. Special audit findings unsupported by material discovered during search cannot justify additions in block assessment; block assessment determinations require material found during search, and absence of such material negates additions as deemed income under cessation principles. Netting of interest and bank charges for computing benefit under export incentive entitlement was permitted on precedent favouring the taxpayer, thereby allowing set-off for benefit calculation.

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Issues:
1. Whether unexplained expenditure can be added under Section 69C of the Income-tax Act.
2. Whether additions in block assessment can be made without material found during search.
3. Netting of interest under Section 80 HHC.
4. Cessation of liability in block assessment.
5. Perversity in the findings.

Analysis:
1. The first issue revolves around the addition of unexplained expenditure under Section 69C of the Income-tax Act. The Assessing Officer added a specific amount as unexplained expenditure due to lack of authentication by vouchers. However, the High Court clarified that Section 69C focuses on the source of expenditure, not its authenticity. As the expenditure was recorded in the regular books of accounts, the source was explained, rendering Section 69C inapplicable. The court upheld the lower authorities' decision to delete the addition, emphasizing that the Assessing Officer erred in treating the expenditure as unexplained under Section 69C.

2. The second issue concerns additions in block assessment without material found during search. Both the Commissioner of Income-tax (Appeals) and the Income-tax Appellate Tribunal concluded that additions in block assessment must be based on material discovered during the search. Since no such material was found during the search and only arose during a subsequent audit, the court agreed with the lower authorities that the addition was not justified in block assessment proceedings.

3. Regarding netting of interest under Section 80 HHC, the court referenced a previous decision in favor of the assessee, establishing that no further consideration was necessary on this matter.

4. The issue of cessation of liability in block assessment was also addressed. The Tribunal highlighted that liability does not cease to exist solely due to the expiration of the limitation period. As no material was found during the search to prove the liability as bogus or ceased, the addition in block assessment was deemed unjustified. The court concurred with this reasoning, emphasizing that in the absence of any material found during the search, the addition could not be sustained.

5. Lastly, the court dismissed the issue of perversity in the findings as no specific instances were pointed out. Consequently, the appeal was dismissed based on the comprehensive analysis and conclusions reached on the various legal issues presented in the case.

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