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Tax Back Ireland
Updated Jan 2026

How to Appeal a Denied Tax Rebate Claim Ireland 2025

Revenue rejected your Irish tax rebate claim? How to appeal a denied tax refund. Step-by-step appeals process, what evidence you need, and how to win your appeal.

14 November 2025
4 min read

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How to Appeal a Denied Tax Rebate Claim Ireland 2025

Revenue rejected your tax refund claim? Don't give up. Learn the appeals process, what evidence you need, and how to win your appeal.

Key Information

If Revenue denies your tax refund claim, you have the right to appeal. Appeals must typically be made within typically processed efficiently of the decision. Many denied claims are overturned on appeal when proper documentation and evidence are provided. Professional representation significantly increases success rates.

Why Tax Claims Get Denied

Understanding why Revenue denied your claim helps you build a stronger appeal. Common reasons include:

Documentation Issues

Missing receipts, incomplete forms, or insufficient proof of expenses. Often easily resolved by providing additional documentation.

Eligibility Disputes

Revenue may dispute your eligibility for certain credits or reliefs. Appeal with evidence of your qualifying circumstances.

Amount Disputes

Revenue accepts some of your claim but disputes the amount. Provide detailed breakdown and supporting evidence.

Time Limit Issues

Claims made outside the 4-year limit. In certain circumstances, late claims may still be accepted.

Step-by-Step Appeals Process

Step 1 Understand the Denial

Carefully read Revenue's decision letter. Note the specific reasons for denial and any amounts in dispute.

Step 2 Gather Evidence

Collect all supporting documentation - receipts, employer records, medical certificates, or any evidence that supports your claim.

Step 3 Internal Review

First, request an internal review by Revenue. Write to the inspector who made the decision explaining why you disagree.

Step 4 Appeal Commissioner

If internal review fails, you can appeal to the Tax Appeals Commission (TAC). This is a formal process with specific procedures.

Step 5 Resolution

The Appeal Commissioner will make a binding decision. In most cases, this resolves the dispute.

Important Deadlines

Internal Review Request typically processed efficiently from decision
Tax Appeals Commission typically processed efficiently from internal review outcome
High Court Appeal typically processed efficiently from TAC decision (on points of law only)

Tips for a Successful Appeal

  • Act quickly - Don't miss the 30-day deadline
  • Be specific - Address each point Revenue raised
  • Provide evidence - Documentation is crucial
  • Stay professional - Clear, factual communication
  • Know the law - Reference relevant legislation
  • Get help - Professional representation improves outcomes

Frequently Asked Questions

How long do I have to appeal a denied tax claim?

You have typically processed efficiently from the date of Revenue's decision to request an internal review. If that fails, you have another typically processed efficiently to appeal to the Tax Appeals Commission.

What evidence do I need for a tax appeal?

You'll need receipts, employer records, medical certificates, or any documentation that supports your original claim. Address each point Revenue raised in their denial.

Does professional help improve appeal success?

Yes. Professional representation significantly increases success rates. Tax experts know Revenue's processes, relevant legislation, and how to build strong cases.

Need Help With Your Appeal?

MyTaxRebate.ie handles appeals and tax claims - our experts know Revenue's processes inside out.

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Filed under:Tax Back Ireland

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