“Section 62(1)(a)”

A provision for expenses, such as warranty, is a deductible liability for income tax purposes if it constitutes a present obligation arising from past events, and a reliable estimate of the amount of obligation is possible.

A sworn statement recorded under Section 132(4) during a search and seizure operation is a strong piece of evidence for assessing undisclosed income, particularly when supported by subsequent actions like filing returns and paying taxes on the admitted income.

The expression "for the purpose of business" is wider in scope than "for the purpose of earning profits" and encompasses expenditures made for commercial expediency, business preservation, administration, and modernization.

This Supreme Court decision is cited as authority in search and seizure assessment proceedings.

An insurance claim received on stock in trade constitutes business income and is not an independent source of income.

Income tax authorities cannot deduce the nature of a document from purported intention, go behind the document, consider the substance over form, or rewrite it merely to suit the revenue's purpose.

A deduction for a bad debt requires more than just pessimism about recovery; the assessee must be honestly convinced of the debtor's precarious financial position, particularly if the debt is owed by a government department or hospital where payment may depend on available funds.

An assessment order is time-barred if the department fails to prove that the order was dispatched within the prescribed period of limitation. The burden lies on the department to make the dispatch date available from records to establish timely issuance.