Due to planned maintenance advisers and taxpayers will not be able to access HMRC Online Services overnight on 7 June
HMRC has confirmed that all HMRC online services will be unavailable between 10pm on Tuesday 7 June 2016 and 4am on Wednesday 8 June 2016.
The downtime will affect all services including self assessment for agents, corporation tax, PAYE, VAT and MOSS.
The Online Services Helpdesk can be contacted on 0300 200 3600, outside UK +44 161 930 8445
HMRC service availability and IT issues updates are available here