Camouflages some final tax haven (4,2,3)

I believe the answer is:

isle of man

I'm a little stuck... Click here to teach me more about this clue!

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

'camouflages some final' is the wordplay.
'some final' can be anagrammed to 'ISLE OF MAN'.
But, I'm unsure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for isle of man that I've seen before include "British outpost of the Gaels" , "Island in the Irish Sea" , "Its capital is Douglas and its cats are tailless" , "Island in 33 Across where cats have no tails" , "tax haven" .)

I've seen this clue in the Sydney Morning Herald.

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