Corporation Tax Deadline

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At OSK, we know that staying on top of Corporation Tax obligations is more than just a compliance exercise – it’s about protecting your business, improving your tax position, and planning ahead with certainty.

Important dates to remember:
If your company has a 31st December 2024 year-end, your corporation tax payment and CT1 return must be submitted by 23rd September 2025 to avoid interest charges and late-filing penalties.

OSK's Tax Compliance service delivers:

• Prompt and accurate preparation and filing of CT1 returns
• Full management of Revenue correspondence on your behalf
• Practical advice on available tax reliefs, credits, and exemptions
• Assurance and clarity in a constantly changing regulatory environment

Need help staying on top of your company’s Corporation Tax? Contact Tax Manager Ruadhán O'Riordan and the Tax team at OSK.

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