RBC Direct Investing

For a 15-year-old, this account can stay open for 45 years and more, and that fee comes out every single year of them compounding against them.

Many of the lower cost options, Wealthsimple, Questrade, Qtrade, RBC Direct Investing, and CIBC Investor's Edge don't offer it at all right now.

This model assumes your child's income stays low as an adult, a job on its own doesn't change that.

What counts is their income plus the spouse's.