While it can be frustrating, it’s common for the Canada Revenue Agency (CRA) to make a tax return assessment that is different from yours.
The reasons for these discrepancies may vary, and can range from very simple (typo or data entry error, forgotten slip, receipt, amount, etc) to complex (carry-forward amounts not included, accounting errors, etc).
In most cases, the CRA will explain how they calculated your tax refund or balance owing, and you can find this information on your Notice of Assessment (NOA), under the heading Explanation of changes and other important information. Compare the line numbers on your NOA and their corresponding values with those entered into TurboTax.
Okay, that makes sense. If a discrepancy is found then, would I be contacting the CRA to fix the error? I’m not really sure who to follow up with, whether it’s an issue on the CRA’s end or TurboTax.
It would depend on what the discrepancy is. It could be as simple as you did Auto-Fill before a tax slip was available, and so it was left off your return. In that case the fault might have been with the tax slip issuer being late - not the CRA or the software.