Non-payment of fine beginning to get adult in trouble (10)

I believe the answer is:

defaulting

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'non-payment of fine beginning to get adult in trouble' is the definition.
I can't judge whether this defines the answer.

'fine beginning to get adult in trouble' is the wordplay.
'beginning to' says to take the initial letters.
'in trouble' indicates anagramming the letters.
The initial letter of 'get' is 'g'.
'fine'+'g'+'adult'='finegadult'
'finegadult' is an anagram of 'DEFAULTING'.

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I've seen this clue in The Independent.

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