Investor tax records should connect the income you received, the investments you bought or sold and the assets you hold outside Canada. A useful file explains the history behind the numbers, including information that may be missing from a broker’s annual summary.
This guide is for Canadian-resident individuals with investment income, non-registered holdings or foreign assets. It supports a focused review through our Personal Tax & Planning service. Company and trust portfolios, residency changes, private-company shares and active trading require their own assessment.
Organise investor tax records into three connected files
Start with the owner, account type and tax year. Separate personal holdings from company or trust assets, and identify registered accounts before combining any information. Then organise the evidence around three questions.
What income arose?
Income slips, distribution breakdowns, account statements and foreign tax withheld.
What changed?
Purchases, sales, transfers, fees, currencies and the running tax-cost history.
What is held abroad?
Ownership, asset location, cost amounts, year-by-year holdings and reporting history.
Keep original statements alongside your working spreadsheet. Label the source and date of each adjustment so that a later reviewer can follow it without reconstructing the entire portfolio.
| Activity | Evidence to gather | Question to resolve |
|---|---|---|
| Purchases and sales | Trade confirmations, quantities, dates, fees, currencies and the earlier acquisition history. | Can each disposal be linked to supported tax cost and sale proceeds? |
| Fund distributions | T3 or T5 slips, distribution details and reinvestment or return-of-capital records. | Do income reporting and cost adjustments reconcile without duplication? |
| Transfers and reorganisations | Sending and receiving statements, issuer notices and the original cost trail. | Was the history carried forward, and does the event need a separate tax review? |
| Foreign holdings | Asset and ownership details, periodic statements, cost records, income and foreign taxes. | Are the income return and any foreign-property reporting both addressed? |
Reconcile tax cost before reporting capital transactions
First confirm whether a securities transaction belongs on capital account or forms part of a business activity; a tax slip alone does not decide that classification. The ACB discussion below concerns capital-property holdings.
A T5008 is a starting point for the reconciliation
The CRA states that T5008 box 20 may differ from your adjusted cost base (ACB). Check the supporting history instead of assuming the broker’s book value is the final tax cost. Keep the slip, explain differences and retain the calculation used for the return.
For identical capital properties, such as shares of the same class, average-cost rules can matter. Review all relevant holdings belonging to the same taxpayer, including those at different brokers. Do not apply another country’s purchase-lot method without checking Canadian treatment. The CRA’s capital-gains guide explains identical properties and other adjustments.
Track distributions separately from cash received
For Canadian mutual funds, reinvested distributions and returns of capital can affect ACB. A cash total alone does not explain the tax treatment. Reconcile the fund’s breakdown, slips and transaction history, including non-cash amounts. See the CRA’s mutual-fund tax guidance for the distinction between distributions and a later sale of units.
Keep the purchase history around a loss sale
A loss sale can engage the superficial-loss rules when you or an affiliated person acquires, or has a right to acquire, the same or identical property during the period from 30 days before to 30 days after the sale, and still owns it or has a right to acquire it 30 days after the sale. Record the surrounding transactions, including relevant affiliated accounts, and obtain a review before treating the loss as deductible. The CRA’s superficial-loss discussion sets out the conditions and exceptions.
Keep the Canadian-dollar conversion trail
Preserve the original currency amount, conversion date, rate source and Canadian-dollar result. For a capital-property sale, the CRA distinguishes the rates for acquisition cost, sale proceeds and selling expenses. Converting only the final foreign-currency profit at the sale-date rate can miss that history. Review the CRA’s capital-gain calculation guidance.
For foreign interest or dividends, retain gross income and foreign tax withheld separately. The CRA’s foreign investment-income guidance addresses conversion and foreign tax credits. An average exchange rate may be acceptable in certain circumstances; agree the appropriate method rather than applying one rate to every type of transaction.
Foreign assets need a separate T1135 review
For a Canadian-resident individual, the general T1135 trigger is a combined cost amount of more than C$100,000 in specified foreign property at any time in the year, subject to exceptions. It is not a separate threshold for each account. The CRA’s Foreign Income Verification Statement guidance explains the property categories and filing framework.
Build an inventory showing the owner, asset, issuer or institution, country, acquisition history and cost amount through the year. Keep the supporting statements even if a holding was sold before year-end. Check the tax definition of cost amount instead of using the portfolio’s current market value.
Important distinctions in the CRA’s T1135 questions and answers include:
- Direct shares of a non-resident corporation can be specified foreign property even when held through a Canadian broker.
- Investments in Canadian mutual fund trusts and corporations are not themselves specified foreign property merely because the fund holds foreign investments.
- Foreign property held inside an RRSP or TFSA is excluded from T1135 reporting.
- An individual’s first year of Canadian tax residence has a T1135 exception; residency dates and supporting values still need attention.
Income reporting and foreign-property reporting are separate. Foreign income still needs to be considered even when no T1135 is required. A completed information return does not replace the income and capital-transaction calculations.
Foreign companies, trusts, mixed personal and investment use, or a change of residency can require a broader assessment. Identify these facts early so the engagement covers the relevant work.
Prepare investor tax records for your CPA review
- Map ownership and accounts. List the taxpayer, account type, institution and relevant jurisdictions.
- Reconcile the opening position. Bring earlier tax-cost schedules, prior returns and unresolved adjustments.
- Document the year’s changes. Include transfers, gifts, inheritances, issuer actions and any missing records.
- Identify the decision ahead. Explain a proposed sale, loss realisation, portfolio transfer or filing deadline.
The CRA’s record-keeping guidance generally requires six years from the end of the last tax year to which records relate. An old acquisition document may support a much later sale. Keep the cost trail through ownership and the relevant reporting period; confirm retention requirements before destroying older files.
Illustrative engagement approach — not a client case
A resident investor holds funds and direct foreign shares at two brokers, receives reinvested distributions and plans a disposal. Our team would map the holdings, reconcile available income and cost records, review the foreign-asset inventory and identify gaps before agreeing the reporting and advisory work. The result would be a documented work plan, not an assumed deduction, tax saving or filing outcome.
Investor tax records: common questions
Which investor tax records should follow a broker transfer?
Preserve the original acquisition and adjustment history when transferring a holding. Do not assume that a move to another broker resets tax cost. Changes in ownership or account type can have separate consequences, so identify the exact transaction before treating it as a simple administrative transfer.
When should I arrange the review?
Begin before a planned transaction or filing deadline becomes urgent. Share an overview of the accounts and known gaps early, so the agreed work can distinguish annual return preparation from reconstructing earlier records and advice needed before a decision.
What if I cannot find the earlier purchase records?
Identify the gap and the periods involved. Request archived statements, transfer details and issuer records where available. Agree how the missing history will be assessed before filing; a current market value is not a substitute for supported tax cost.
Discuss your investor tax records and planning needs
Our Personal Tax & Planning team can assess the records, filings and decisions involved. For an initial enquiry, outline the tax years, account types, foreign holdings and immediate decision or deadline. Keep statements, tax identifiers and account details out of the web form; document sharing is agreed separately.
For the wider planning context, see our Canadian tax-planning guide. Resident owners of Canadian residential rentals can also use our rental property tax guide.
Prepared October 2026 with reference to CRA guidance available at that time. General information for Canadian-resident individual investors; treatment depends on the tax year, ownership, account type, residency and complete facts. Confirm current forms and obtain advice before filing or acting.