EU: European Commission updates public CbC reporting taxonomy, technical guidance

The Inland Revenue Authority of Singapore (IRAS) has updated its guidance on applying for a Certificate of Residence (COR), clarifying the conditions under which foreign-owned investment holding companies can demonstrate valid commercial reasons for establishing operations in Singapore and qualify for treaty benefits under Singapore's tax agreements.

The Australian Taxation Office announced that over 100 million pre-filled data points are now ready for individual tax returns, with Assistant Commissioner Anita Challen urging taxpayers to verify their details, declare all income, and avoid overclaiming deductions ahead of the 31 October lodgment deadline.

Argentina's Federal Tax Authority (ARCA) published General Resolution No. 5876, extending the 2025 income tax return filing deadline to 27 August 2026 for individuals and undivided estates, while payment deadlines and Personal Assets Tax obligations remain unchanged.

Oman's Tax Authority has introduced new conditions for deducting certain business expenses under the Executive Regulations of the Income Tax Law, clarifying that the changes apply only to corporate taxpayers and will take effect for tax years beginning on or after 1 January 2027.

Taiwan's Central Area National Taxation Bureau has reminded businesses that disposals of shares or equity interests may be subject to the House and Land Integrated Income Tax if more than 50% of the invested enterprise's value is derived from Taiwan real property, while highlighting updated valuation guidance and exemptions for certain pre-2021 shareholdings.

The Brazilian Federal Revenue Service (RFB) and the CGIBS have announced that a joint act setting mandatory issuance dates for CBS and IBS electronic tax documents will be published by the end of July 2026, with a compliance encouragement programme for the transition period to follow within 30 days.