Lines 21699 and 21700 – Business investment loss

If you had a business investment loss in 2020, you can deduct one half of the loss from income. The amount of loss you can deduct from your income is called your allowable business investment loss (ABIL).


Completing your tax return

Complete Chart 6 of Guide T4037, Capital Gains, to determine your ABIL.

Enter the gross business investment loss from line A of Chart 6 on line 21699 of your return.

Enter your allowable business investment loss from line D of Chart 6 on line 21700 of your return.

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