Rely on assertion that shows balance (4,9)
I believe the answer is:
bank statement
'shows balance' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'rely on assertion' is the wordplay.
'rely' becomes 'bank'.
'on' is a charade indicator (letters next to each other) (in a down clue, letters appear on others).
'assertion' becomes 'statement' (I've seen this before).
'bank'+'statement'='BANK STATEMENT'
'that' acts as a link.
Can you help me to learn more?
(Other definitions for bank statement that I've seen before include "Printed facts and figures" , "Listing for balance" , "Record of financial transactions" , "note of available funds" , "showing an indication of interest?" .)