As long as your contributions have not exceeded the $15,000 that is allowed up to Dec 31st 2011, you will be fine tax wise. Jan 1st 2012 you can contribute another $5,000 to your TFSA for a total contribution limit of $20,000. The value of your initial investment can go to the moon and it remains tax free. I currently use RBC and received a call from one of their specialists who was certain that I had over contributed to my TFSA since the value of it was greater than $15,000. I did some digging and discovered that I have barely contributed half of the $15,000 that I am allowed, then I called them back and informed them that I will be moving my accounts elsewhere. Poor service on their part will not be privy to my funds when the SS St. Elias sails!