Financially effective (8)
I believe the answer is:
economic
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">financially effective</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for economic that I've seen before include "Comic one giving a good return for money laid out" , "Monetary; cost-effective" , "Likely to bring a profit" , "Sparing in the use of resources" , "Using the minimum resources necessary for effectiveness" .)