Section 26 in The Companies (Accounting Standards) Rules, 2006
26. Any change in the accounting policies which has a material effect in the current period or which is reasonably expected to have a material effect in later periods should be disclosed. In the case of a change in accounting policies which has a material effect in the current period, the amount by which any item in the financial statements is affected by such change should also be disclosed to the extant ascertainable. Where such amount is not ascertainable wholly or in part, the fact should be indicated.
