Section 37 of the Income Tax Act

Expenditure is classified as revenue or capital based on its practical business effect, necessity, or expediency, rather than solely on the juristic classification of rights; an enduring benefit does not automatically make an expenditure capital if it facilitates trading operations or business efficiency.

The existence of an international transaction for Advertising and Marketing Promotion (AMP) expenditure requires the revenue to discharge the burden of proof. An explanation inserted under Section 92B does not automatically make AMP expenditure an international transaction.

When there is a nexus between an expenditure and the purpose of business, incurred on grounds of commercial expediency, the Revenue cannot question its reasonableness or assume the role of the businessman to compel profit maximization. This principle applies even if the business is not that of the assessee itself.

Expenditure must be commercially expedient for carrying on the business, and it is not for revenue authorities to dictate how an assessee should conduct its business. The court will not question the business expediency of a transaction, even if a third party also benefits.

An expense incurred by an assessee for its own business, such as advertising, marketing, and promotional (AMP) expenses, cannot be disallowed merely because it incidentally or indirectly benefits the assessee's sister concerns or associated enterprises.

The discount arising from the grant of Employee Stock Option Plans (ESOPs) is an allowable business expenditure under Section 37(1) of the Income-tax Act, 1961, as it is an ascertained liability, not a contingent one, and constitutes a revenue expense rather than a capital expense.

Technical services involve human intervention and expertise, not just routine or machine-based operations. Routine customer support and standard facility provision through technology do not constitute technical services under the Act.

Expenses incurred for obtaining a loan for the purpose of the assessee's business, such as debenture discount, bank guarantee charges, and stamp duty, are considered revenue expenditure. These liabilities, though potentially spread over time, are deductible as revenue expenses.

Expenditure providing an enduring advantage, such as upfront lease rent for land, is revenue expenditure if no capital asset is acquired or generated, allowing for deduction under Section 37, even when capitalized in the books of account.

The sale of 'canned software' in physical form is the sale of a copyrighted article and constitutes 'goods,' distinct from the underlying copyright. This case provides foundational principles for distinguishing copyrighted works from copyrighted articles and for what qualifies as 'production or manufacturing of goods or articles' under tax laws.