Lines 21699 and 21700 – Business investment loss

If you had a business investment loss in 2022, you may be able to deduct half of the loss from income. The amount of
the 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 and, if applicable, your business investment loss reduction. Claim the reduction for the ABIL on line 21700 of your income tax and benefit return. Enter the gross business investment loss on line 21699 of your return.

Forms and publications

• Guide T4037, Capital Gains
• Form T1A, Request for Loss Carryback
• Income Tax Folio S1-F5-C1, Related Persons and Dealing at Arm's Length
• Archived Interpretation Bulletin IT232R3, Losses – Their deductibility in the Loss Year or in Other Years
• Income Tax Folio S4-F8-C1, Business Investment Losses

Related topics

• Line 25200 – Non-capital losses of other years
• Line 25300 – Net capital losses of other years
• Summary of loss application rules