VAT Submission Failing - User Credentials

I seem to be having problem submitting my VAT return this month.
Is anyone else battling to submit due to Authentication Failure…or is it just me?

I don’t believe my credentials have changed - but when I logged into their .gov website they strongly encouraged setting up a 2-factor log-in. Could this introduction be causing issues?


Hi @Geoff_Gifford

It sounds like there is an issue either with the credentials or with the account itself. The error being returned is usually along the lines of:

Authentication Failure. The supplied user credentials failed validation for the requested service.

Which suggests it’s usually one of these that’s the issue:

Please re-enter your details and double check them and your account

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