ACB and capital gains calculator

Enter the buys, sells, return of capital and splits for one security. The calculator shows the running adjusted cost base (average cost) and realized gains by year. Rows stay in this browser and are not saved to an account.

Row 1
Date
Type
Shares
Price per share ($)
Commission ($)

Fill in every field on each row to calculate (date, shares and price for buys and sells, an amount, or a ratio).

Notes

Average-cost method (CRA). Identical securities across all your accounts are pooled, but registered accounts (TFSA/RRSP/FHSA) are excluded entirely.

Educational estimate, not tax advice. Check against your T5008/T3 slips and CRA guide T4037. This tool is in beta.

Educational information, not investment or tax advice.