With a limited amount of money, things are soon tight (2,1,10)
I believe the answer is:
on a shoestring
'with a limited amount of money' is the definition.
'things are soon tight' is the wordplay.
'tight' is an anagram indicator (tight can mean drunk).
'things'+'are'+'soon'='thingsaresoon'
'thingsaresoon' anagrammed gives 'ON A SHOESTRING'.
(Other definitions for on a shoestring that I've seen before include "With insufficient money" , "With a small budget" , "not quite so low as to be on one's uppers" , "With a very tight budget" , "With a very low budget" .)