Contact support

Email support@vatflow.uk. We reply within 2 working days, Monday to Friday, excluding English bank holidays. There is no phone line.

Writing from the email address on your VATflow account lets us act on the request straight away; from any other address we will first check with the account holder.

• The company name or VAT registration number, and the VAT period if it concerns a return.
• The exact message on screen, and the HMRC correlation ID if one is shown.
• What you did just before, and whether it happened more than once.
• Never your password, your Government Gateway password, your authenticator codes or your recovery codes. We will never ask for them.

• Most HMRC messages are explained in Troubleshooting HMRC errors.
• If VATflow is unreachable, check the system status page (opens in a new tab).
• Lost your phone or authenticator? See MFA and account security for the recovery-code sign-in.

If you believe you have found a security weakness in VATflow, email support@vatflow.uk with Security in the subject line. Please give us a reasonable time to investigate before sharing details publicly. We will acknowledge within 2 working days.