From the start, roubles usable all round here (7)
I believe the answer is:
belarus
'all round here' is the definition.
The answer is a location as well as being a singular noun. This is suggested by the definition.
'from the start roubles usable' is the wordplay.
'from' is an anagram indicator (from the letters).
'the start' suggests taking the first letters.
The first letter of 'roubles' is 'r'.
'r'+'usable'='rusable'
'rusable' is an anagram of 'BELARUS'.
Can you help me to learn more?
(Other definitions for belarus that I've seen before include "State" , "East European country, capital Minsk" , "Minsk's country" , "European nation)" , "European republic" .)