Measurement
The general measurement principle – there are several significant exceptions noted below – is to apply effective IFRSs in measuring all recognised assets and liabilities. [IFRS 1.10(d)]
How to recognise adjustments required to move from previous GAAP to IFRSs
Adjustments required to move from previous GAAP to IFRSs at the date of transition should be recognised directly in retained earnings or, if appropriate, another category of equity at the date of transition to IFRSs. [IFRS 1.11]
Estimates
In preparing IFRS estimates at the date of transition to IFRSs retrospectively, the entity must use the inputs and assumptions that had been used to determine previous GAAP estimates as of that date (after adjustments to reflect any differences in accounting policies). The entity is not permitted to use information that became available only after the previous GAAP estimates were made except to correct an error. [IFRS 1.14]
Changes to disclosures
For many entities, new areas of disclosure will be added that were not requirements under the previous GAAP (perhaps segment information, earnings per share, discontinuing operations, contingencies and fair values of all financial instruments) and disclosures that had been required under previous GAAP will be broadened (perhaps related party disclosures).
Disclosure of selected financial data for periods before the first IFRS statement of financial position (balance sheet)
If a first-time adopter wants to disclose selected financial information for periods before the date of the opening IFRS balance sheet, it is not required to conform that information to IFRS. Conforming that earlier selected financial information to IFRSs is optional.[IFRS 1.22]
If the entity elects to present the earlier selected financial information based on its previous GAAP rather than IFRS, it must prominently label that earlier information as not complying with IFRS and, further, it must disclose the nature of the main adjustments that would make that information comply with IFRS. This latter disclosure is narrative and not necessarily quantified.[IFRS 1.22]
