Have you added another $5000 to your TFSA? Working on it, right?
Easiest way is to set up an automatic withdrawal from your bank to your TFSA account. What ever amount you feel would be comfortable if you are unable to put the total amount in right away. Which, hey, who has $5000 laying in wait to do that right?
It you set that up automatically you don't end up even missing that money. Easier said then done, I know. But what are you waiting for? Even if you can only do $100 a month at least it is something.
