Trader hiding out in tax-haven. Do record his location! (6)

I believe the answer is:
vendor
'trader' is the definition.
(I've seen this before)
'hiding out in tax-haven do record his location' is the wordplay.
'VENDOR' is hidden within the letters.
But, I'm uncertain how the hidden word is indicated.
Can you help me to learn more?
(Other definitions for vendor that I've seen before include "One selling house" , "A Latin seller" , "Purveyor" , "One flogging" , "Salesperson" .)