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HMRC Submission:  Error 1046 Authentication Failure

Article ID: 2025205            Last Updated: 31 October 2022


When making a Full Payment Submission or Employer Payment Summary submission, you may encounter Error 1046, Authentication Failure.


This message is generated by the government gateway login server and relates to the authentication details (username / password / etc.) being provided by your attempted submission.

The HMRC gateway cross-checks 4 pieces of information in order to authenticate and allow a submission.

If any one of the following items does not match your government gateway record, the submission will fail with Error 1046:





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