Crossword Genius

Furnish empty extension, requiring payment now (5)

Ross

I believe the answer is:

endue

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'furnish' is the definition.
(I've seen this before)

'empty extension requiring payment now' is the wordplay.
'empty' suggests removing the centre.
'requiring payment now' becomes 'due' (I can't explain this - if you can you should give a lot more credence to this answer).
'extension' with its centre removed is 'en'.
'en'+'due'='ENDUE'

Can you help me to learn more?

(Other definitions for endue that I've seen before include "Supply (with a quality/ability)" , "Invest - supply" , "Provide or imbue" , "Endow (with a quality)" , "Invest (something) with a quality or ability" .)

I've seen this clue in The Telegraph.
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