Speaker at end of month will be a painter (9)
I believe the answer is:
decorator
'a painter' is the definition.
(someone paid to decorate with paint)
'speaker at end of month' is the wordplay.
'speaker' becomes 'orator' (orator is a kind of speaker).
'at end of' is a charade indicator (letters next to each other) (some letters go at the end of others).
'month' becomes 'dec' (abbreviation for December).
'orator' put after 'dec' is 'DECORATOR'.
'will be' is the link.
(Other definitions for decorator that I've seen before include "Painter perhaps" , "Artisan" , "Who paints" , "Worker embellishing a property" , "chap giving medals?" .)