To carry losses forward, check your CRA My Account to obtain the current balance of your unclaimed losses. If you are not a CRA My Account holder, you can find this amount on your last notice of assessment from the CRA.
Fill out chart 4 of the T1A and enter the results on line 25300 of your income tax return (T1). Keep in mind that you must apply the oldest losses first.
As per the Canada Revenue Agency, if you had an allowable capital loss for the year, it must be applied to taxable capital gain. Afterwards, if there is still more capital loss, it is considered a net capital loss which can be used in 3 preceding years or future years. It's possible your Line 25300 is empty because you may have had an allowable capital loss but not a net capital loss.
For more information please visit our TurboTax article: Carrying Capital Losses Backward or Forward
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