Puts the money safely away for tips (5)

I believe the answer is:

banks

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This clue could be a double definition.

'puts the money safely away' is the first definition.
I know that 'money' relates to this answer.

'tips' is the second definition.
(banking is a kind of tipping)

'for' is the link.

Can you help me to learn more?

(Other definitions for banks that I've seen before include "Relies" , "Financial institutions" .)

I've seen this clue in the Evening Standard.

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