On 28 August 2026, Irish Revenue released eBrief No. 126/26, an updated “Guide to Self-Assessment” consolidating all obligations for individuals, partnerships, and trustees under the self-assessment system. The guide covers registration for Income Tax, Preliminary Tax calculations, filing deadlines, Revenue Online Service (ROS) functionality, and the treatment of various income sources. It also addresses common errors, Revenue audit triggers, and the appeals process. This version replaces all previous guides and is effective for the 2025 tax year and subsequent years.
Key Takeaways
- Registration and Preliminary Tax: Clear steps for new entrants to self-assessment, including mandatory ROS registration and the two methods for calculating Preliminary Tax (90% of current year or 100%/105% of prior year).
- Expanded Income Source Guidance: Detailed treatment of rental income, foreign income, share-based remuneration, and the new crypto-asset reporting regime.
- Compliance and Enforcement: Highlights Revenue’s use of data analytics, the Risk Evaluation Analysis and Profiling (REAP) system, and the consequences of non-compliance including surcharges, interest, and publication of defaulters.
Disclaimer: This article is compiled and summarized by the AI based on publicly available information and is for general information purposes only. It does not constitute any form of formal tax advice, legal opinion, or basis for performance. Please consult a qualified professional tax advisor or legal counsel for tax advice.
Source: Read Official Announcement