The move means that Pay As You Earn (PAYE) customers who have company cars will no longer have to wait for HMRC to update their tax code for them.

HMRC’s chief digital and information officer, Mark Dearnley, said: ‘HMRC is rolling out customer-focused digital services that are so straightforward and convenient that everyone who can use them will choose to do so.

‘Our digital services will deliver significant savings to HMRC’s customers in both the cost of phone calls and time spent dealing with the department. They will also mean that people can deal with the department when it is most convenient for them – rather than for us.

‘This trial means that we can incorporate customer’s feedback to ensure we deliver a service they want.’

The new digital service is being used with GOV.UK Verify – the new way for people to prove who they are when using government digital services.

HMRC receives about 4.3 million calls a year from customers about their tax codes.

HMRC has recently completed a public consultation on voluntary pay-rolling of benefits-in-kind, including company car benefits. Where employers adopt payrolling of benefits, customers will not need to use the new digital service as they will be paying the right amount of tax in real time.