I have always been able to file my VAT via VAT - File VAT - File online and then completing the User ID, password and Agent type. I am now getting the message "Authentication Failure. The supplied user credentials failed validation for the requested service."
Is this because HMRC have moved onto a two-step authentication process or just that HMRC is down?
Many thanks for your help.
If you are using a sunset version of QuickBooks such as 2014 and below, you will no longer be able to file VAT online inside QuickBooks. You can, however, use the paper filing option on your version of QuickBooks or upgrade to the latest version to continue filing VAT online.