Following Conservative legislation, support tax maybe (8)

I believe the answer is:

clawback

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'tax maybe' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.

'following conservative legislation support' is the wordplay.
'following conservative' becomes 'c' (UK political abbreviation. I am not sure about the 'following' bit.).
'legislation' becomes 'law' (I've seen this in other clues).
'support' becomes 'back' (to back is to support or endorse).
'c'+'law'+'back'='CLAWBACK'

Can you help me to learn more?

I've seen this clue in The Independent.

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