I have just done a little subbing job for a builder and he never mentioned cis cards etc until the end of the job when he asked for my number, i dug the card out as i havent used it for 6 yrs (its a permanent one not the temporary ones). I gave him the number etc and received the cheque this morning but he has stopped the 20%, last time i did this i was given the cheque PLUS a receipt showing the amount of tax stopped etc for the tax man, i dont mind him keeping the 20% as it will sort itself out at the end of the yr but should i get a receipt from him for accountant/tax man showing the amount stopped. sorry if its a stupid question but i very very rarely get asked for cis card number so i dont have a clue. cheers