I'm a single mum with 2 children and will be starting supply after Easter. After talking to my local agencies I'm hoping to average 16 hours a week over a term. I know this might mean working full time some weeks and getting no supply others. My problem is I'm not sure if I will still be able to claim tax credits or how this works. I've rang the advice line and they were useless. Does anyone know how tax credits work while on supply? What happen over summer when no work?