Guidance
Contact HMRC’s Large Business Directorate
How to contact HMRC if you’re a large business with a general or non-technical query.
If you’re a large business with a technical query, you should contact your designated Customer Compliance Manager.
How to contact us by email
Use this list of email addresses to contact us if you have a general, non-technical query.
You’ll need your 3-digit tax office code number to find the correct email address. You can find this number on all the correspondence from your Corporation Tax office.