You may not have any tuition to transfer to your spouse for a few different reasons. Tuition is a Non-Refundable Tax Credit that is used to reduce your tax payable and only results in a refund of any tax you may have had withheld. Tax payable is what is calculated on your income entries, not the bottom line of a refund or balance due.
- The maximum amount you can transfer of "current year tuition credits" is $5,000. (If the tuition was a carry forward amount, you cannot transfer it).
- Any tuition credits used by you to reduce your own tax payable to zero, are subtracted from the amount you are able to transfer. For example: If you needed $5,000 to reduce your own tax payable to zero, the amount of tuition available to transfer would be zero.
You should look on your Student Summary and see how much of your tuition you used. It shows up as Amount Claimed in 2018.
https://turbotax.community.intuit.ca/replies/2647970
