Line 25300 – Net capital losses of other years

You can claim, within certain limits, your net capital losses from previous years that you have not already claimed on line 25300. For more information, on how to use a loss, see Capital losses.

If you have a net capital loss in 2024 and want to apply it to a previous year 2023, 2022, or 2021, see Applying your 2024 net capital loss to previous years.

What is a net capital loss

Generally, if you had an allowable capital loss in a year, you have to apply it against your taxable capital gain for that year. If you still have a loss, it becomes part of the computation of your net capital loss for the year.

You can use a net capital loss to reduce your taxable capital gain in any of the 3 previous years or in any future year.

How much you can claim

The amount you claim depends on when you incurred the loss. This is because the inclusion rate used to determine taxable capital gains and allowable capital losses has changed over the years.

Also, the way you apply these losses may differ if you incurred them before May 23, 1985.

Special rules for losses incurred before May 23, 1985

Special rules apply to losses you incurred before May 23, 1985. This also includes losses you incurred after May 22, 1985, on any disposition of capital property made under an agreement of sale you entered into before May 23, 1985. For more information about those special rules, see Special rules for losses incurred before May 23, 1985.

When and how to apply your net capital losses

Applying your net capital losses of other years to 2024

You can use a net capital loss from a previous year to reduce a taxable capital gain in 2024. 

Forms and publications

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2025-09-03