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Tax filing deadlines: Aug to Dec 2025

Key dates including first filings for MTD for Income Tax volunteers, quarterly P46 (car) forms 

August 2025

1 August          

Corporation tax due for accounting periods ended 31 October 2024 where not payable by instalments

             

2 August          

P46 (car) forms due for the quarter ended 5 July 2025 (where benefits not payrolled)

             

5 August          

Employment intermediary reports due for quarter ended 5 July 2025

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