Indian Chartered Accountant goes to South American empire (4)
I believe the answer is:
inca
'indian' is the definition.
(I've seen this before)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for inca that I've seen before include "Pre-conquest Peruvian" , "Former emperor" , "Very old Peruvian (4)." , "Tongue" , "South American (historical)" .)