T5008 ACB Reconciliation Calculator
See exactly how a broker’s Box 20 cost differs from your records before you transfer the disposition to Schedule 3.
Capital gain / loss for Schedule 3
$7,625Taxable capital gain / allowable loss
$3,81350% inclusion rate
Adjustment from Box 20
$2,250Actual ACB minus reported Box 20
Box 20 may be blank or may not equal your tax ACB. Confirm transaction records, reinvested distributions, return of capital and fees before filing.
What this estimate includes
Box 21 supplies proceeds. Your verified pooled ACB and selling outlays determine the gain or loss.
Use the investment-slip guide to match consolidated statements and Quebec T5008/RL-18 packages.
Watch the superficial loss rule: a loss is denied as a "superficial loss" if you, or an affiliated person such as your spouse or your own RRSP or TFSA, buy the identical security within 30 days before or after the sale and still hold it 30 days after. The denied loss is generally added to the ACB of the repurchased shares. The tax-loss selling calculator models the 30-day window.
Questions this calculator answers
Is T5008 Box 20 always my ACB?
No. CRA explicitly says Box 20 may or may not reflect adjusted cost base and must be adjusted as needed.
Where does a T5008 transaction go?
Capital-account transactions normally go on Schedule 3. Transactions on income account may instead be business income.
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