As per our TurboTax FAQ: 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.

If there is a remainder after that, then a carry forward will be created and applied to your next year's return.

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