You may not have to ReFile your 2018 return if CRA assesses it and corrects the amounts for you. If you had tax deducted from your tax information slips, these amounts should have been reported on Line 437 based on the entries you made in TurboTax.
If you put an amount on Line 476 by mistake, CRA will adjust this to agree with their records.
Once you get your Notice Of Assessment (NOA), you can see if CRA made the corrections for you. If they did not adjust these amounts automatically, you should contact them and see how they advise you to correct this.
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