
myCostBase
CRA-ready adjusted cost base tracking for Canadian investors.
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Details
Launched
August 4, 2026
Category
SaaS & B2B
Pricing
Freemium
Tags
About myCostBase
myCostBase helps Canadian investors maintain the adjusted cost base records needed for non-registered investment accounts. Instead of relying on a single broker's account-level book value, it pools identical securities across taxable accounts and brokerages for each taxpayer, creating a dated, reviewable ledger of every ACB change.
Users can enter trades manually or import CSV history from supported Canadian brokerages. myCostBase handles purchases and sales, DRIPs, return of capital, reinvested distributions, transfers, stock splits, options, short sales, commissions, and USD transactions. Historical USD amounts are converted with Bank of Canada daily exchange rates, with the rate and calculation trail kept visible.
At tax time, myCostBase compares its calculated proceeds, ACB, and realized gain or loss with broker T5008 figures and explains discrepancies such as return-of-capital adjustments or pooled holdings across institutions. It also provides tax-loss-harvesting views, T3 validation, Schedule 3 summaries, T1135 foreign-property reporting, detailed audit trails, and exports designed for accountant review.
myCostBase complements tax-filing software; it does not file a tax return. A free plan includes unlimited manual entry and up to 100 imported transactions, with paid annual plans for unlimited imports, reconciliation, and advanced reports.
What myCostBase does
myCostBase provides a comprehensive ledger for tracking adjusted cost base (ACB) across Canadian taxable accounts. It allows users to consolidate ACB calculations from multiple brokerages while adhering to documented Canadian tax rules, ensuring accurate reporting for capital gains and losses. This helps investors manage their taxation responsibilities efficiently and correctly.
Users input transaction records, including buys, sells, and adjustments like return of capital and foreign currency exchanges. myCostBase calculates the ACB by pooling identical holdings and applying necessary adjustments. The platform tracks changes over time and generates a reviewable history, making it easier to justify figures during tax reporting.
myCostBase is designed for Canadian investors managing non-registered taxable accounts that involve multiple brokerages. It specifically targets those who hold identical properties across different platforms and require precise ACB calculations, particularly with foreign currency trades and ETF distributions that affect cost bases.
Based on mycostbase.ca, read on Sep 16, 2026.
Key features
- Calculate adjusted cost base
- Pooled across multiple brokerages
- Track foreign currency conversions
- Record ETF distributions
- Generate audit trails for CRA
What people use myCostBase for
- 01Calculate ACB for Canadian investments
- 02Adjust for foreign currency trades
- 03Reconcile T5008 differences
- 04Apply ROC adjustments
- 05Prepare tax documents for accountant
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