One who checks accounts (7)
I believe the answer is:
auditor
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">one who checks accounts</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for auditor that I've seen before include "One who checks accounts" , "Accountant; hearer" , "Checker of books" , "One qualified to check accounts" , "Finance officer" .)