Break one's budget as lots of deliveries await settlement (9)
I believe the answer is:
overspend
'break one's budget as lots' is the definition.
I can't judge whether this definition defines the answer.
'deliveries await settlement' is the wordplay.
'deliveries' becomes 'overs' (cricket term).
'await settlement' becomes 'pend' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'overs'+'pend'='OVERSPEND'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for overspend that I've seen before include "splurge" , "Buy too much" , "Use too many resources" , "To run into debt" , "Excessive outlay" .)