The department has dealings with many individuals and
organisations in the UK and abroad. You may interact with these
parties in a variety of ways and at different times. In this
guidance ‘customers’ means all the individuals and
organisations the department deals with in carrying out its
functions.
These are examples of ‘customers’:
In summary, HMRC’s customers include individuals,
employers, employees, sole proprietors, partnerships and legal
entities such as limited companies and trusts.
You have an equal duty of confidentiality to deceased
customers.
You have an equal duty of confidentiality to those who you
think behave legally and those who you think do not (including
suspects and offenders).