Particulars IFRS US GAAP  Indian GAAP
Purchase method­ Disclosure Disclosures include names and descriptions of combining entities, the date of acquisition, cost of combination, summary of fair values and pre- acquisition IFRS values of assets and liabilities acquired, impact on results and financial position of acquirer, and reasons behind the recognition of goodwill Similar to IFRS, with additional disclosures regarding the reasons for  the acquisition and details of allocations. Disclosures include names and descriptions of combining entities, the effective date,  consideration (paid or contingently payable), method of accounting, amount of goodwill/capital reserve, and period of goodwill amortization
Uniting of interests method  Prohibited. Same as JFRS. Required for certain amalgamations when all the specified conditions are met.
Business combinations involving entities under common control Not specifically addressed. Entities elect and consistently apply either purchase or pooling-of- interest accounting for all such transactions. Generally recorded at predecessor cost; the use of predecessor cost or fair value depends on number of criteria. No specific  guidance. Normal business combination accounting would apply.