Advertisement
HMRC Formal Complaint Letter Template
How to make a formal complaint about HMRC handling of your tax affairs — what to include, your legal rights, and a free letter generator.
← All Letter Templates · HMRC & Tax · Last updated 18 August 2026
This is free rights guidance, not legal advice. For advice specific to your situation, see our About page or contact Citizens Advice.
If you need to make a formal complaint about HMRC handling of your tax affairs, a written letter is the recommended first step — it creates a clear record and shows you're pursuing the matter formally. Below is what a strong hmrc formal complaint letter should include, plus a free tool to generate yours.
What this letter needs to cover
- Describe the issue chronologically with reference numbers and dates of contact
- State specifically what went wrong
- State the impact (financial loss, stress, time)
- Request a full investigation, written response within 30 days, and appropriate remedy
- Note right to escalate to the Adjudicator's Office
See our full letter template library for related templates, or use our free checkers for guidance specific to your situation.
Ready to write yours?
Answer a few questions and get a professionally drafted letter, ready to send — free, no account needed.
✉️ Generate This Letter Free →Related reading
Comments
Comments are loading…