HM Revenue and Customs
The HM Revenue and Customs (HMRC) helpline for Tax Avoidance Schemes is available to report or seek advice on tax avoidance issues. This service operates Monday to Friday from 08:00 to 18:00, and Saturday from 09:00 to 13:00. Common reasons for calling include reporting a scheme, seeking advice on exiting a scheme, or disclosing participation. Wait times can be long, especially during peak tax season or near filing deadlines. It is advisable to call early in the day or mid-week for shorter wait times. For complex disclosures, email or written correspondence may be recommended.
Updated 15 Dec 2025
Expected outcomes
- Report tax avoidance scheme
- Seek advice on schemes
- Exit a tax avoidance scheme
- Disclose scheme participation
- Request documentation guidance
Call preparation
Assemble everything before you dial. These requirements are verified by our call analysts and updated as organizations change their scripts.
- Scheme reference number
- Personal details
- Agent details
- Relevant correspondence
- Documentation of involvement
- Official email address
Known issues
Callers frequently report long wait times, especially during peak tax season or near filing deadlines. To mitigate this, try calling early in the day or mid-week. Additionally, some users experience difficulty reaching the correct department, often being transferred multiple times. To avoid this, clearly state the purpose of your call and request the 'Tax Avoidance Schemes' team directly. For complex issues, consider using email or written correspondence to ensure detailed communication.
