Behind with payments (2,7)
I believe the answer is:
in arrears
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">behind with payments</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 in arrears that I've seen before include "Behindhand (with rent)" , "Behind with payments" , "Owing" , "Position when a debt remains unpaid after its due date" , "Late with payments" .)