Free Adjusted Cost Base Calculator
Estimate a Canadian security's ACB per share and realized gain or loss for a simple CAD transaction history—no account required.
Free calculators and templates for Canadian investors tracking adjusted cost base, T1135 thresholds, USD capital gains, and T5008 reconciliation.
Estimate a Canadian security's ACB per share and realized gain or loss for a simple CAD transaction history—no account required.
Calculate multi-year ETF and REIT Return of Capital (ROC) cost decay, track running ACB, and calculate Section 40(3) deemed capital gains when ACB drops below zero.
Calculate Canadian dollar capital gains on U.S. stock trades using live Bank of Canada exchange rates for exact buy and sell dates.
Estimate the additional Canadian tax attributable to a capital gain from a taxable investment account using your province and other taxable income.
Calculate upward Adjusted Cost Base adjustments from reinvested (phantom) capital gains distributions in Canadian ETFs and prevent double taxation.
Check if your foreign property cost crosses the $100,000 CAD CRA threshold and determine whether you need Simplified or Detailed T1135 reporting.
Compare broker-reported T5008 Box 20 book value against your own ACB records to spot discrepancies, calculate tax impact, and prepare Schedule 3.
Calculate CRA superficial loss denials, 61-day window dates, partial loss formulas, and substituted property ACB additions.
Calculate Canadian tax savings from tax-loss harvesting, offset current gains, and allocate 3-year capital loss carrybacks via CRA Form T1A.
Download the free Excel workbook and follow the input conventions, worked example, and review checklist.
Get the workbook →Choose a tool for the question in front of you: a sale, an ETF distribution, a broker slip, or a year-end review. These calculators are for Canadian investors organizing taxable investment records and checking the assumptions behind an adjusted cost base calculation. Keep your trade confirmations, distribution details, and currency records beside you while you work.
Try the free adjusted cost base calculator to enter buys, sales, DRIPs, and return of capital for one security in Canadian dollars. It works without signup and is intentionally narrower than a saved portfolio ledger.
Choose the T5008 checker when you already have a slip and want to compare its cost figure with your own records. The USD, return-of-capital, and phantom-distribution calculators help isolate adjustments that are easy to miss in a broader ledger.
The planning tools cover separate questions, including replacement purchases around a loss sale and possible capital-loss carrybacks. The T1135 checker helps organize a threshold review; it cannot decide every foreign-property classification or replace the form instructions.
You can open the standalone calculators, enter a scenario, and review the result without creating an account. The spreadsheet download is also available directly. An estimate is only as complete as the dates, amounts, ownership details, and adjustments you provide. Check each tool’s scope before using its output in your records.
The myCostBase ACB calculator and tracker is the account-based application for ongoing calculations and saved history. Calculator scenarios do not automatically transfer into a new account.
If you keep returning to the same security, hold it at several brokerages, or need years of adjustments, maintain one chronological record. A spreadsheet can work with careful controls; a saved ledger reduces repeated entry and keeps the calculation history together. Compare the Free, Standard, and Premium plans or read the ACB calculation methodology before choosing a workflow.
Get started free with unlimited manual transactions, plus 100 imported transactions for up to 2 taxpayers. Upgrade to Standard at $49 CAD/year for unlimited broker CSV imports, interactive T5008 reconciliation, and support for up to 5 taxpayers.
All prices in Canadian dollars.