Invoices (5)
I believe the answer is:
bills
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">invoices</span>' is the definition.<br/ ><span class="explanation-format__explanation">('bill' can be a synonym of 'invoice')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for bills that I've seen before include "Invoices" , "Beaks" , "Draft laws" .)