Tax dope and hash if lacking millions (6)
I believe the answer is:
assess
'tax' is the definition.
(to assess is to set the level of a tax)
'dope and hash if lacking millions' is the wordplay.
I cannot really see how this works, but
'dope' could be 'sess' (synonyms) and 'sess' is present in the answer.
The remaining letters 'as' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for assess that I've seen before include "Gauge, evaluate" , "Weigh up, estimate value" , "Judge the quality of" , "Estimate, decide the value of" , "Evaluate, estimate" .)