Financial product to mature, being tied up (7)
I believe the answer is:
bondage
'financial product to mature being tied up' is the definition.
I can't judge whether this defines the answer.
'financial product to mature' is the wordplay.
'financial product' becomes 'bond' (I can't justify this - if you can you should believe this answer much more).
'to mature' becomes 'age' ('age' can be a synonym of 'mature').
'bond'+'age'='BONDAGE'
Can you help me to learn more?
(Other definitions for bondage that I've seen before include "Captivity" , "Enslavement" , "State of slavery or servitude" , "restraint" .)