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Quarterly Tax Developments December 2025
This edition provides an update of Q4 tax developments and related IFRS accounting implications.
IFRS version of Q4 Quarterly Tax Developments now available
The IFRS Quarterly Tax Developments for the quarter ending 31 December provides a quarterly overview of certain enacted and substantively enacted tax legislation and IFRS accounting developments, as well as certain regulatory developments and other items through 4 December 2025, except as noted.
Under IFRS, companies are required to account for the effects of tax law changes on their deferred tax assets and liabilities in the period the legislation is substantively enacted. Similarly, companies must reflect the effects of a substantively enacted change in tax laws or rates in their annual effective tax rate computation in the period the changes are substantively enacted. If an interim change is significant, temporary differences may need to be estimated as of the enactment.