Hi Dirtydunes,
My understanding is that with respect to whether or not the investing company can lend your shares out is not determined by it being a TFSA but by whether you have a cash account or margin account. I use a self directed trading company and they don't allow TFSA margin accounts, could just be their policy or it could be regulatory.I don't believe that the broker can lend your shares if you have purchased them within a cash account because they belong to you. Someone please correct me if I'm wrong.
PrairieGirl