The IASB has published for public consultation proposed narrow-scope amendments to IAS 8 Accounting Policies, Changes in Accounting Estimates and Errors.
IAS 8 sets out the criteria for selecting and changing accounting policies.  When a company changes an accounting policy, it is currently required to apply the new policy as if it had always applied this policy―unless this is not practicable.
The Board is proposing that in deciding how far back to go in applying a change in accounting policy that results from an agenda decision, a company will consider not only whether it is practicable but also the benefits to users and costs to the company of making the change.

The ED Accounting policy changes (Proposed amendments to IAS 8) is open for comment until 27 July 2018.

For further information, please refer to the IASB website.