This guidance note provides essential information on the applicability of Accounting Standard (AS) 25 for interim financial reporting and the correct measurement of income tax expense. It is particularly useful for accountants and finance professionals who need to prepare and present interim financial statements. The document clarifies how to apply AS 25, handle income tax calculations for interim periods, and addresses specific scenarios like changes in tax rates and the impact of mergers. It aims to ensure accurate and compliant interim financial reporting.