Financial adviser effects a change to incomes (9)
I believe the answer is:
economist
'financial adviser effects' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'a change to incomes' is the wordplay.
'a change' is an anagram indicator.
'to'+'incomes'='toincomes'
'toincomes' with letters rearranged gives 'ECONOMIST'.
Can you help me to learn more?
(Other definitions for economist that I've seen before include "One versed in the management of a country's material resources" , "Friedman, say" , "government adviser, possibly" , "Expert in the management of a country's material resources" , "Money supply expert" .)