HM Revenue & Customs has announced that its Self Assessment telephone helpline will not be available every year between April and September with users directed to online services.
The confirmation of a permanent annual change follows a trial closure of the helpline between June and September last year.
HMRC claimed that the pilot was "successful" with an evaluation showing "customers' filing rates and payments are in line with, or better than, previous tax years and not impacted by asking them to self-serve online".
Cuts are also being made to the tax authority's VAT and PAYE helpline. The full changes are as follows:
between 8 April and 30 September, the Self Assessment helpline will be closed and customers will be directed to HMRC's digital services.
between October and March the Self Assessment helpline will be open to deal with "priority queries", with others directed online.
the VAT helpline will be open for five days every month ahead of the deadline for filing VAT returns.