BILLING is a playable word

billing Scrabble® Dictionary

noun
pl. billings
the relative position in which a performer is listed
23 Playable Words can be made from "BILLING"
   2-Letter Words (4 found)
   3-Letter Words (9 found)
   4-Letter Words (7 found)
   5-Letter Words (2 found)
   7-Letter Words (1 found)