Source of money also in country raised capital (8)
I believe the answer is:
'capital' is the definition.
(I know that Katmandu is a national capital)
'source of money also in country raised' is the wordplay.
'source of money' becomes 'atm' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'also' becomes 'and' (both can mean in addition).
'in' is an insertion indicator.
'country' becomes 'UK' (United Kingdom).
'raised' says the letters should be written backwards (going up in a down clue).
'uk' in reverse letter order is 'ku'.
'atmand' inserted into 'ku' is 'KATMANDU'.
Can you help me to learn more?
(Other definitions for katmandu that I've seen before include "Nepal capital (alternative spelling)" , "foreign capital" , "Nepalese capital (alt. spelling)" , "Capital of Nepal (older spelling)" , "eastern city" .)