“Section 30(1)”

Expenditure is defined as money paid out or away, which is gone irretrievably. To be deductible under Section 37(1), expenditure must be wholly and exclusively for business, not capital or personal, and not fall under specific provisions of Sections 30 to 36, often justifiable on grounds of commercial expediency.

For calculation of deduction under Section 80HHC, if total interest is netted off after adjusting interest paid and received, the 90% reduction specified in Explanation (baa) is not applicable.

Rule 5(a) of the First Schedule to the Income Tax Act applies to add back an amount only if it is an expenditure or allowance contemplated in sections 30 to 43A and is specifically disallowed. Without such a specific prohibition, amounts like provisions for preference share redemption or amortization cannot be added back to an insurance company's profits.

Expenditure qualifies as 'current repairs' if it maintains existing machinery without replacement, creates no new asset, restores functional efficiency without increasing capacity, and is not an independent unit. Conversely, the cost of replacing machinery, especially independent units, constitutes capital expenditure.

The burden of proof lies on the assessee to rebut the contents of documents or incriminating material discovered during a search and seizure operation, especially concerning undisclosed income, leveraging presumptions under sections like 132(4A) and 292C.

Expenditure incurred wholly and exclusively for the purpose of business is deductible, even if it is unremunerative or does not yield an immediate profit. The absence of a corresponding receipt does not negate the deductibility of such an expense.

Expenditure incurred on improvements like flooring, partition, wiring, and false ceiling in existing premises is treated as revenue expenditure, not capital expenditure, even if it provides some lasting benefit. Such expenses are deductible if made for efficiently carrying on the business.

If there is prima facie material in the possession of the Assessing Officer to form a tentative belief that Section 9(1)(i) is attracted, that reason alone constitutes a relevant ground to reopen the assessee's assessment.