myCostBase .

myCostBase is an adjusted cost base (ACB) tracking platform built for Canadian investors with non-registered accounts. It pools identical securities across brokerages, applies Bank of Canada exchange rates to USD transactions, tracks ETF returns of capital and reinvested distributions, identifies potential superficial losses, and reconciles calculated gains with T5008 slips. Users can import supported broker CSV files, review calculations in a transparent Security Ledger, and export accountant-ready capital gains reports.