Saving money in a way protects company (7)
I believe the answer is:
'saving' is the definition.
(I know that saving can be written as economy)
'money in a way protects company' is the wordplay.
'in a way' indicates anagramming the letters.
'protects' means one lot of letters goes inside another (outer letters protect inside letters).
'company' becomes 'co' (abbreviation).
'money' with letters rearranged gives 'enomy'.
'enomy' going around 'co' is 'ECONOMY'.
(Other definitions for economy that I've seen before include "Financial prudence" , "See 22" , "Country's financial state" , "Financial saving" , "being frugal" .)