The Finnish Tax Administration has opened the submission of global minimum tax returns using the MyTax e-service (news release). Starting 30 January 2026, the GloBE Information Return (GIR), the Notification of the filing constituent entity, and the Top-up tax return can be submitted via MyTax. The standard deadline for all three is within 15 months after the end of the accounting period, but for the first submission, the deadline is extended to within 18 months, or 30 June 2026.
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