April 4 2012.

HM Revenue & Customs (HMRC) Online services will face disruption and closure from 9pm on Thursday 5 April through to Wednesday 11 April 2012 to allow for IT upgrades. All services will be affected including VAT, Corporation Tax, Self-Assessment and PAYE.

According to the HMRC website IT service upgrades and maintenance always take place during April to allow the department to get ready for the new tax year, and a further one during October.

Detailed information on individual service timings can be found by visiting;