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Report suspected tax avoidance or evasion behaviour in Land Transaction Tax (LTT) or Landfill Disposal Tax (LDT).

Please provide information about the person or business you’re reporting.

This could include:

  • their name
  • their address
  • the type of avoidance or evasion you think they’re committing

You do not have to give your name or contact details unless you want to.

If you need to make changes at any time, use the previous page button.

Important information

  • Do not try to find out more about the tax avoidance or evasion or let anyone know you’re making a report.
  • If you feel your personal safety is at risk, call the police.
  • We cannot provide you with feedback and are not acting on your behalf.
  • We may pass on this information to other law enforcement agencies.

Report online

Voluntary disclosure

If you’ve got something wrong on your own tax return as a result of an avoidance scheme, please call us instead on 03000 254 000. Rydym yn croesawu galwadau yn Gymraeg / We welcome calls in Welsh.

Other ways to report

Welsh Revenue Authority

PO Box 110
CF37 9EH

Telephone: 03000 254 000

Rydym yn croesawu galwadau yn Gymraeg / We welcome calls in Welsh.

(Monday to Friday, 10am to 3pm)

We’ll shortly have a new PO box address. We’ll let you know our new address when it’s ready. In the meantime, continue to use our current one.

Any post sent to our previous postal address, after our PO box address has changed, will be redirected to our new one.

We recommend using our online contact form to send us correspondence. If you have any questions, contact us.

How we use your information

See our privacy policy for how we use the information you provide.


If you’ve any questions, contact our helpdesk team on 03000 254 000. Rydym yn croesawu galwadau yn Gymraeg / We welcome calls in Welsh.