Please review your Notice of Assessment (NOA) as the Canada Revenue Agency (CRA) may have already included your additional T4 information slip from your file, resulting in the difference on your return. If needed, please contact the CRA at 1-800-959-8281. When calling them you can verify if you owe them an amount or not. You can also find this information by going into your MyAccount.
Thank you for choosing TurboTax.