Send documents or information to HMRC for a compliance check
Use this form to upload documents or send information if you've received a letter from HMRC's compliance team asking for additional information.
Who can use this form
You should only use this form if you’ve received a letter from HMRC’s compliance team requesting additional information. An authorised agent can also send these details on your behalf.
What you’ll need
You’ll need the case reference number shown on the letter we sent you.
Your submission may be delayed if you use an incorrect case reference number.
Uploading your documents
Each file must be 15MB or less and be in one of the following formats:
- JPEG
- XLSX
- ODS
- DOCX
- ODT
- PPTX
- ODP
You can upload up to 10 documents at a time.
If you need to send more than 10 documents, you must split these up and submit them in groups of 10 or less.
Send your documents or information
You’ll need to sign in to use this service. If you do not have sign in details, you’ll be able to create them.
You can save your progress and come back later.
What happens next
When you submit your form, you’ll receive a confirmation email with your submission reference number.
We’ll contact you if we need any more information.