Take care of bank account and be liable too, oddly (6,2)
I believe the answer is:
attend to
'take care of' is the definition.
(synonyms)
'bank account and be liable too oddly' is the wordplay.
'bank' means to remove the middle letters (I've seen 'banks of' mean this (the banks are the sides of the word)).
'and' means one lot of letters go next to another.
'be liable' becomes 'tend' (I can't justify this - if you can you should believe this answer much more).
'oddly' means one should take alternating letters (letters in the odd-numbered positions are used).
'account' with its middle removed is 'at'.
The alternate letters of 'too' are 'to'.
'at'+'tend'+'to'='ATTEND TO'
Can you help me to learn more?
(Other definitions for attend to that I've seen before include "Take seriously - wait on" , "Deal with" , "Provide for the needs of" .)