Short-term tenant in trouble with IRS (9)
I believe the answer is:
transient
'short-term' is the definition.
(thesaurus)
'tenant in trouble with irs' is the wordplay.
'in trouble with' indicates an anagram.
'tenant' with its letters anagrammed with 'irs' makes 'TRANSIENT'.
(Other definitions for transient that I've seen before include "Lasting a short time" , "on the move" , "gone in a trice!" , "Passing, short-lived" , "Ephemeral" .)