Irish Tax Appeal Guides

Practical guides on appealing Revenue decisions, surcharges and penalties in Ireland.

Guide · 5 min read

How to Appeal a Revenue Decision in Ireland (2026 Guide)

Step-by-step: what you can appeal, the 30-day deadline, what your notice must include, and how to lodge it with the Tax Appeals Commission. No accountant needed.

Guide · 6 min read

What is the Tax Appeals Commission Ireland?

Everything you need to know about the TAC — what it is, what it can decide, the full appeals process from lodging a notice to getting a determination, and your right to go to the High Court.

Guide · 5 min read

How to Appeal an Irish Revenue Surcharge or Penalty

Got a late filing surcharge or a penalty you think is wrong? Both are appealable. This guide covers the grounds, the evidence you need, and how to draft your notice of appeal.

Guide · 5 min read

How to Appeal a VAT Assessment in Ireland

Estimated VAT assessment, disallowed input credit, or a rate dispute? Here's how to appeal to the Tax Appeals Commission.

Guide · 5 min read

How to Appeal an Income Tax Assessment in Ireland

Estimated assessment, disallowed expenses or missing credits — how self-assessed and PAYE taxpayers appeal an income tax assessment.

Guide · 5 min read

How to Appeal a Corporation Tax Assessment in Ireland

Disallowed trading expenses, capital allowances disputes, or an estimated CT1 assessment — how companies appeal to the Tax Appeals Commission.

Guide · 5 min read

How to Appeal a Capital Gains Tax Assessment in Ireland

Valuation disputes, base cost, and refused reliefs like PPR — how to appeal a CGT assessment.

Guide · 5 min read

How to Appeal a Revenue Audit Result in Ireland

Disagree with an audit assessment or the penalty behaviour classification? You can appeal the tax, the penalty, or both.

Guide · 4 min read

Can I Appeal a Revenue Decision After 30 Days?

Missed the deadline? Here's how the Tax Appeals Commission's late appeal process works, and how to apply.

Guide · 5 min read

How to Appeal a Local Property Tax (LPT) Assessment

Disagree with your LPT valuation band, an estimate for non-filing, or a compliance determination? Here's the review and appeal process.

Guide · 5 min read

How to Appeal a CAT (Capital Acquisitions Tax) Assessment

Disputed gift or inheritance valuation, a refused relief, or the wrong group threshold — how to appeal to the Tax Appeals Commission.