taxman
noun /ˈtæksmæn/
  /ˈtæksmæn/
(plural taxmen 
 /ˈtæksmen/
  /ˈtæksmen/
)- the taxman[singular] (informal) a way of referring to the government department that is responsible for collecting taxes
- He had been cheating the taxman for years.
 
 - [countable] a person whose job is to collect taxes