Hey, I have a parent who was asking 4 times for my SIN # in March. I told her that I don't give it out. I've given out many receipts without it and it's always fine. I have a feeling she's a scam artist. I just got another email saying that the receipt isn't valid because there's no SIN. Argh! I am not giving this women my SIN- I don't trust her and she can steal my identity. Can't the CRA just find my SIN if they have my address and name?