I'm aware of how marginal tax rates are applied. That's why I said "while my average tax rate may increase" (in a hypothetical situation), I can still net more overall due to increase in the absolute $ return on the TFSA portfolio.
I'm responding with respect to the OP's comment about beign bumped into a higher marginal tax bracket. Just because you are, doesn't mean you'll automatically end up with less discretionary income.
I feel like I'm misreading this, but regardless of whatever investments you have, you'd come out with more as your income increases into higher marginal tax brackets correct? As in, if I was making 94k and got a raise to 98k, I'd come out with more regardless of what's in my TFSA.
I'm responding with respect to the OP's comment about beign bumped into a higher marginal tax bracket. Just because you are, doesn't mean you'll automatically end up with less discretionary income.