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Quarterly Tax Developments September 2025
This edition provides an update of Q3 tax developments and related IFRS accounting implications.
The IFRS Quarterly Tax Developments for the quarter ending 30 September provides an overview of certain enacted and substantively enacted tax legislation and IFRS accounting developments, as well as certain regulatory developments and other items through 23 September 2025, except as noted.
Highlights of this edition include:
- Tax legislation enacted or substantively enacted this quarter
- Other considerations
- Things we have our eyes on
- IASB update
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.