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Capital gains and losses

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A capital gain arises when property is disposed of for more than it cost. Only a portion of the gain is included in income — the inclusion rate — which is why capital gains are taxed more favourably than interest or employment income. The mechanics that generate enquiries are the adjusted cost base, which taxpayers rarely track and slips do not report; the restriction that capital losses can only offset capital gains; and the principal residence exemption, which requires reporting even when the gain is entirely exempt. This tutorial covers dispositions, how a gain is arrived at, losses, the exemptions, and the deemed dispositions that arise without a sale.

How to work through this tutorial

This follows a capital transaction from disposition to reporting: 1. Establish that there was a disposition, including ones without a sale. 2. Establish that the property is capital property rather than inventory. 3. Determine the gain — proceeds, adjusted cost base, and outlays. 4. Apply the inclusion rate to arrive at the taxable capital gain. 5. Handle losses, which are restricted in ways gains are not. 6. Apply the exemptions — principal residence, and the lifetime exemption. 7. Handle deemed dispositions: death, emigration, change in use. 8. Report it, including when the gain is fully exempt. 9. Check your work against the common errors. 10. Verify every specific against CRA's published guidance before relying on it. This tutorial states no inclusion rate and no exemption amounts — both are set in legislation and have changed.

Dispositions and capital property

A disposition is not only a sale. It includes a gift, a transfer, an exchange, the redemption of a security, the destruction or loss of property, and several deemed dispositions covered below. A taxpayer who gave shares to a family member has disposed of them and may have a gain, which is regularly a surprise. The property must be **capital property** — held to produce income or for use, rather than as inventory bought to be resold. Where property is bought with the intention of reselling at a profit, the gain may be business income rather than a capital gain, and fully taxable rather than partly. That characterisation is decided on the facts: the intention at acquisition, the frequency of similar transactions, the period of ownership, the nature of the property and the taxpayer's other activities. Someone who buys and flips property repeatedly is not making capital gains, whatever they call them. This matters more than the label suggests, because the inclusion rate applies only to capital gains. Business income is included in full. Where a taxpayer's characterisation is genuinely in doubt, that is a question to route rather than settle on a call. It is also a common audit area.

Determining the gain

A capital gain is the proceeds of disposition, less the adjusted cost base, less the outlays and expenses of disposing. **Proceeds** are generally what was received. Where property is gifted or transferred to a non-arm's-length person for less than fair market value, proceeds are deemed to be fair market value — so a gift can produce a taxable gain with no cash to pay the tax. **Adjusted cost base** is what the property cost, adjusted over time. This is the figure taxpayers do not have. Slips do not supply it: a securities transaction slip reports proceeds but generally not ACB, so a taxpayer who relies on slips alone will report a gain equal to the entire proceeds. That is one of the most common errors in this topic and it substantially overstates the gain. ACB adjustments include commissions on purchase, reinvested distributions from a fund (which increase ACB and are routinely missed), and returns of capital (which reduce it). Where identical properties are acquired at different times, the ACB is averaged across the whole holding rather than tracked lot by lot. **Outlays and expenses** of disposing — commissions, legal fees — reduce the gain. Only a portion of the resulting gain, the inclusion rate, is included in income as a taxable capital gain. This tutorial does not state the rate: it is set in legislation and has been changed, so take it for the year in question.

Capital losses

A capital loss arises where the adjusted cost base and outlays exceed the proceeds. Losses are treated less generously than gains, and the asymmetry matters. **An allowable capital loss can only be applied against taxable capital gains** — not against employment income, business income or anything else. A taxpayer with a large stock loss and no gains cannot use it to reduce their salary tax, which is a frequent and disappointing conversation. Unused net capital losses may be carried back a defined number of years and forward indefinitely, applied against taxable capital gains of those years. So the loss is not wasted, merely deferred until there is a gain to offset. The **superficial loss** rule denies a loss where the taxpayer, or an affiliated person, acquires the same or identical property within a defined window around the disposition and still holds it at the end of that window. It exists to stop a taxpayer selling to crystallise a loss and immediately repurchasing. The denied loss is added to the ACB of the repurchased property rather than lost outright. The affiliated-person aspect catches people: a sale by one spouse and a purchase by the other, or a repurchase inside an RRSP, can trigger it. In the registered plan case the loss can be denied permanently. On death, net capital losses may be applied more broadly than during life. Confirm the rules before advising on a final return.

Exemptions

**The principal residence exemption** can eliminate the gain on a home that qualified as the taxpayer's principal residence throughout the period of ownership. Only one property per family unit may be designated for a given year. The critical practical point: **the disposition must be reported even where the gain is fully exempt.** Reporting is required to make the designation, and failing to report can result in a penalty and, in principle, a denied or reduced exemption. Taxpayers routinely believe that a fully exempt sale need not appear on the return at all, and that belief is now costly. Where a property was not a principal residence for the whole period — a rental period, a second property, land beyond what is reasonable for residential use — the exemption is partial and the calculation is proportionate. **The lifetime capital gains exemption** applies to gains on qualified small business corporation shares and on qualified farm or fishing property. It is a lifetime cumulative amount, it is indexed, and it has been changed. This tutorial states no figure. Qualification is technical — the tests look at the assets of the corporation over defined periods — and a taxpayer asserting entitlement should be routed rather than taken at their word. Both exemptions require the underlying transaction to be reported.

Deemed dispositions

Some dispositions happen without anything being sold. **On death**, an individual is generally deemed to have disposed of their capital property at fair market value immediately before death, so accrued gains are realised on the final return. A rollover at cost is available for property passing to a spouse or common-law partner or a qualifying spousal trust, which defers the gain until that person disposes of it or dies. **On emigration**, ceasing Canadian residency triggers a deemed disposition of certain property at fair market value — often called departure tax. Some property is excluded, and security may be posted to defer the payment. The residency topic in Foundations covers when residency ends. **On a change in use**, converting a property from personal use to income-producing or the reverse is a deemed disposition at fair market value. Converting a home to a rental is the common case, and elections exist that can defer the consequence — but they must be made, and a taxpayer who did not know about them at the time has usually lost the opportunity. **On a gift or a non-arm's-length transfer** below fair market value, proceeds are deemed to be fair market value. What these share is that tax arises without cash arriving to pay it. That is worth flagging to any taxpayer contemplating one of them.

Common errors

Reporting proceeds from a securities slip as the gain. The slip generally does not report adjusted cost base, and the taxpayer must supply it. Overlooking reinvested distributions, which increase ACB, and returns of capital, which reduce it. Tracking identical properties lot by lot instead of averaging the ACB across the holding. Treating a gift or a below-value family transfer as producing no gain. Proceeds are deemed to be fair market value. Assuming a fully exempt principal residence sale need not be reported. Reporting is required to make the designation and there is a penalty for failing to report. Designating more than one property per family unit for the same year. Applying a capital loss against employment or business income. It can only offset taxable capital gains. Overlooking the superficial loss rule, including where the repurchase was by a spouse or inside a registered plan — where the loss can be denied permanently. Assuming the inclusion rate is stable. It is set in legislation and has changed; take it for the year in question. Accepting a taxpayer's assertion that a gain qualifies for the lifetime exemption. The tests are technical. Treating repeated buying and reselling as producing capital gains. That may be business income, fully included. Overlooking the deemed disposition on a change in use, and the elections that could have deferred it.

What to verify this tutorial against

This was drafted without a source document and deliberately states no inclusion rate and no exemption amounts. Take both from legislation for the relevant year — the inclusion rate in particular has been the subject of change and is exactly the figure a confident wrong answer would damage. CRA's capital gains guide is the primary reference. It covers dispositions, adjusted cost base, the inclusion rate, losses, the superficial loss rule and the exemptions. CRA's guidance on the principal residence exemption sets out the designation, the reporting requirement, the penalty for failing to report, and the partial-exemption calculation. CRA's guidance on the lifetime capital gains exemption sets out the qualification tests for small business corporation shares and farm or fishing property, and the current cumulative amount. CRA's guidance for emigrants covers the deemed disposition on ceasing residency, the excluded property, and the security arrangements. CRA's guidance on a deceased person's return covers the deemed disposition at death and the spousal rollover. The Income Tax Act sets the inclusion rate, the loss carryover periods and the superficial loss window.

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