As per our TurboTax article: Understanding the Tuition Tax Credit in Canada: All You Need to Know

If the amount of your tuition tax credit is more than you can apply to your taxes this year, that means you have a remainder. You can also transfer some of this remainder to a spouse or other eligible family member, such as a parent or grandparent, for them to use as a tax credit. In a single year, you can transfer a maximum of $5,000 minus the amount you used to lower your own taxes.

You can choose to leave the remainder to be forwarded to future year as the Canada Revenue Agency (CRA) will see to it that the credit be applied to your future taxes as needed until all of the amount has been used. This information can be found on your Notice of Assessment every year.

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