Staying compliant with Revenue Dublin tax deadlines is crucial for all Irish taxpayers. Whether you're filing individual income tax returns, managing corporation tax obligations, or handling VAT submissions, missing deadlines can result in penalties and interest charges. This comprehensive guide covers all important Revenue Dublin deadlines for 2026.

Quick Reference - Key Deadlines 2026

  • Income tax returns: 31 October 2026
  • Preliminary tax: 31 October 2026
  • Corporation tax: 9 months after year-end
  • VAT returns: Monthly/bi-monthly depending on registration

Income Tax Deadlines 2026

Individual taxpayers must be aware of several critical income tax deadlines throughout 2026. The most important deadline is 31 October 2026 for filing annual income tax returns for the tax year 2025. This applies to all self-employed individuals, company directors, and those with rental income.

Annual Income Tax Return

Your annual income tax return must be filed through the ROS system or MyAccount portal by 31 October 2026. Late filing can result in penalties ranging from €125 to €1,270 depending on the delay period.

  • Form 11 returns for self-employed individuals
  • Form 12 returns for PAYE taxpayers with additional income
  • Capital gains tax returns if applicable
  • Rental income declarations

Preliminary Tax Payment

Preliminary tax for 2026 is also due by 31 October 2026. This advance payment towards your 2026 tax liability must be at least 90% of your current year liability or 100% of your previous year's liability, whichever is lower.

Important: PAYE Workers

If you're a PAYE worker with additional income sources, you may need to file returns even if your employer handles your main tax through PAYE system. Check your filing requirements well in advance.

Corporation Tax Deadlines

Companies operating in Ireland must comply with corporation tax filing deadlines, which are calculated based on your company's accounting year-end. The general rule is that corporation tax returns must be filed within 9 months of your accounting year-end.

Accounting Year End Filing Deadline 2026 Payment Deadline
31 December 2025 30 September 2026 30 September 2026
31 March 2026 31 December 2026 31 December 2026
30 June 2026 31 March 2027 31 March 2027
30 September 2026 30 June 2027 30 June 2027

Preliminary Corporation Tax

Large companies (those with corporation tax liability exceeding €200,000) must make preliminary tax payments by the 6th day of the 6th month of their accounting period. For companies requiring business registration services, ensure all compliance requirements are met.

VAT Return Deadlines

VAT registered businesses must file returns according to their registration frequency. Most businesses file either monthly or bi-monthly returns, with specific deadlines throughout 2026.

Monthly VAT Returns

Businesses with annual turnover exceeding €3 million must file monthly VAT returns by the 19th day of the month following the return period.

  • January 2026 return: Due 19 February 2026
  • February 2026 return: Due 19 March 2026
  • March 2026 return: Due 19 April 2026
  • Continuing monthly throughout 2026

Bi-Monthly VAT Returns

Most VAT registered businesses file bi-monthly returns by the 19th day of the month following the return period end. If you need assistance with VAT registration, our team can guide you through the process.

Late Filing Penalties

Late VAT return filing incurs automatic penalties. The penalty is €4 per day for the first 10 days, then €5 per day thereafter, with a maximum penalty of €12,695 per return.

Other Important Revenue Deadlines 2026

Employer Tax Obligations

Employers must meet various PAYE, PRSI, and USC deadlines throughout 2026:

  • Monthly P30 returns due by 14th of following month
  • Annual P35 returns due by 28 February 2027
  • P45/P46 forms when employees join or leave
  • Benefit-in-kind returns by 31 March 2027

Capital Gains Tax

Capital gains tax returns and payments are due by specific dates depending on when the disposal occurred:

  • Disposals 1 January - 30 November: Due 15 December 2026
  • Disposals 1 December - 31 December: Due 31 January 2027

Local Property Tax (LPT)

The Local Property Tax liability date for 2026 is 1 November 2025, with various payment options available throughout 2026. Property owners should ensure their LPT obligations are met to avoid penalties.

Planning Ahead

To ensure compliance with all Revenue Dublin deadlines, consider setting up reminders well in advance of due dates. Many taxpayers find it helpful to prepare documentation months ahead of filing deadlines.

Getting Help with Tax Deadlines

If you need assistance meeting Revenue Dublin deadlines, several support options are available. You can visit our Dublin office during opening hours or contact us by phone for guidance on specific deadline requirements.

Professional Services

For complex tax situations, consider professional assistance. Our comprehensive tax services include deadline planning and compliance management. Whether you need help with tax returns, emergency tax issues, or tax refund applications, professional guidance ensures compliance.

Documentation Requirements

Before visiting our office, review the documentation requirements for your specific tax obligations. Having proper documentation ready ensures efficient processing and helps meet crucial deadlines.

  • Income statements and receipts
  • Previous year tax returns
  • PPS number and identification
  • Tax clearance certificates if required

For urgent deadline-related queries, walk-in appointments may be available, though advance booking is recommended to avoid delays. Check our directions page and public transport information for easy access to our Dublin office, with parking available nearby.

Stay Updated

Revenue Dublin deadlines can occasionally change due to weekends, public holidays, or legislative updates. Always verify current deadlines on the official Revenue website or through your MyAccount portal before finalizing submissions.

Remember that meeting tax deadlines is not just about avoiding penalties—it's about maintaining good standing with Revenue and ensuring your financial obligations are properly managed throughout 2026 and beyond.