The Losses Die On A Day You Choose

A corporation that has accumulated losses is carrying an asset. It does not appear on the balance sheet at anything like its value, nobody insures it, and it can be destroyed by a share transfer executed for entirely unrelated reasons.

A Note On Currency

Everything here is stated as verified in August 2026 and requires confirmation before reliance.

We have read no statutory provision and no judgment. Section references are as commentary cites them, and our sources include a university tax textbook, a set of lecture notes, law firm and accounting firm publications and a practitioner paper[1][2][3][4][5].

We did read the two worked examples in one source closely enough to check them, and both reconcile exactly; we say so where they appear[6].

Our own arithmetic applies a capital gains inclusion rate that has been subject to recent change and reversal in Canada, and assumed corporate tax rates. Both must be confirmed for the year and province concerned. Our figures show the shape of the exposure, not its exact size.

This is not tax advice. Acquisition of control planning is time-critical, turns on the specific share structure and the specific sequence of steps, and must be done with advisors before the transaction closes.

When This Happens To You

The circumstances, which are broader than the word acquisition suggests. This section is our own analysis.

Owners tend to associate these rules with a sale to a third party buyer. They are triggered by any change in who holds the votes, which includes a number of transactions that feel internal.

A sale of the business, which is the obvious case.

A succession or buyout, where one family member or shareholder acquires the majority from another.

An investment round in which a new investor or group ends up holding a majority of the voting shares.

A reorganisation that moves shares between holding companies or trusts, depending on the structure.

The death of a controlling shareholder and the subsequent devolution of the shares, depending on how they pass.

Commentary notes that the definitional starting point is a change of control to a single person or a group of persons[1], which means the rules can be triggered by several people acting together rather than by one buyer.

We flag that there are statutory exceptions under which control is deemed not to have been acquired in certain related-party situations, that these matter enormously in family and reorganisation contexts, and that we did not research them. Anyone in one of the internal cases above needs advice on that specifically rather than reliance on this article.

What Control Means

The test, as commentary reports it.

One source states that Interpretation Bulletin IT-302R3 defines control of a corporation as ownership of such a number of shares as carries with it the right to a majority of the votes in the election of the board of directors[1].

We did not obtain that bulletin and report the definition as the source gives it.

Three observations, ours.

The test is about votes for directors, not about economic ownership. A person may hold most of the equity value and not control the corporation, and the reverse is equally possible.

That makes the share structure decisive. Corporations with multiple classes, some voting and some not, are common in Canadian private companies precisely because the two can be separated, and it is the voting class that matters here.

And the formulation quoted describes what practitioners call de jure control, being control as a matter of legal entitlement. Commentary elsewhere in our sources refers to de facto control in the context of affiliation rules[5], which indicates that more than one concept of control operates in this area. We did not establish how the two interact here and do not assert it.

The Deemed Year End

The first consequence, from which most of the others follow.

Commentary states that pursuant to subsection 249(4), a corporation's taxation year is treated as having ended immediately before the time that a change in control occurred, and a new taxation year is treated as having commenced at that time[4].

Another puts it as the taxation year being deemed to end immediately before the time control is acquired, with a new taxation year deemed to begin[5].

The purpose is stated by one source: the separate determination of income or loss for the period ending immediately before the acquisition is required in order that the loss carry-over restrictions can be applied to that taxation year[4].

The administrative weight of this is easy to underestimate, and commentary is blunt about it: the deemed year end triggers all the normal administrative requirements of a regular year end. Corporate tax returns must be filed, final tax payments must be submitted, and income tax elections that are due within a specified period of a fiscal year-end must be made[2].

Our own observation is that this is a real and frequently missed obligation.

A corporation that changes hands in the middle of its fiscal year now has two taxation years in that period, two returns, two payment deadlines, and two sets of election deadlines measured from two different year ends.

The vendor's accountant may consider their engagement finished at closing and the purchaser's accountant may not know the stub year exists. That gap is where the filing is missed.

The Seven Day Election

A narrow piece of relief worth knowing about.

Commentary states that where the normal year end occurs within seven days of the change of control, it may be extended by election, thus avoiding a short taxation year[2].

We report that as the source states it and did not verify the mechanics, the deadline, or the form.

Two practical points, ours.

Seven days is a very short window, so this is only available where the closing happens to fall close to an existing year end.

But that is not entirely a matter of luck. Where a transaction's closing date is genuinely flexible, and the corporation's year end is nearby, moving the closing a few days can eliminate an entire tax filing and the compliance cost that goes with it.

That is the kind of point that has to be raised while the closing date is still being negotiated, which is weeks before anyone usually asks a tax question about the deal.

Control Is Acquired At The Beginning Of The Day

The provision most likely to catch a well-advised transaction, and commentary calls it a trap in terms.

It states that subsection 256(9) provides that, regardless of the time at which control is acquired, control is deemed to have been acquired at the beginning of the day unless the corporation elects that subsection 256(9) will not apply, and adds that this rule can be a significant trap if the acquisition is part of a series of staged steps in an acquisition[2].

Work through what that does, and this is our own analysis.

Transactions are sequenced. A closing agenda will typically have several steps executed in a set order on the closing day, and some of those steps are deliberately placed before the change of control because their tax treatment depends on being there.

The deeming rule collapses that sequence. If control is treated as having been acquired at the start of the day, then everything done on the closing day happens after the acquisition, whatever the agenda says and whatever time the documents were signed.

Three consequences.

A step intended to fall in the pre-acquisition stub year may fall in the post-acquisition year instead.

The election out exists precisely for this, which tells you the default is frequently the wrong answer.

And the decision has to be made by the corporation, which after closing is controlled by the purchaser, so the vendor's interest in the election is a matter for the agreement rather than something they can rely on afterwards.

The Loss Pool Splits In Two

The central structural point, and the reason owners misjudge their exposure. This section is our own analysis.

Business owners speak about their corporation's losses as a single accumulated balance. The Act does not treat them that way, and on an acquisition of control the two halves have completely different fates.

Net capital losses are extinguished. Commentary describes them as expiring, forfeited, unavailable to the acquirer regardless of the exceptions that apply to other losses[1][2][6].

Non-capital losses survive conditionally. Their use is subject to the continuation of the same business, an expectation of profit, and application against similar business income[6].

So the correct mental model is not will my losses survive. It is:

The capital half is gone on closing, unconditionally, and the only thing that can be done about it must be done before.

The non-capital half is gone unless the purchaser runs the business, which makes its survival dependent on the buyer's post-closing conduct rather than on anything the vendor controls.

Those are two different problems requiring two different responses, and conflating them is what leads owners to assume that a friendly purchaser who intends to keep operating means nothing is lost.

Net Capital Losses Are Extinguished

The harder of the two rules, stated by several sources consistently.

Commentary states that pursuant to subsection 111(4), where control of a corporation is acquired, the corporation's net capital losses for taxation years preceding the acquisition of control may not be carried forward to taxation years ending after the acquisition[4].

Another states simply that net capital losses will expire on an acquisition of control pursuant to that subsection[2], and a third that capital losses present at the deemed year end are forfeited[6].

A textbook source puts the point in the form that matters most: net capital losses cannot be used by the acquirer regardless of the exceptions that permit non-capital losses to survive[1].

Two observations, ours.

There is no continuing-business test to satisfy. A purchaser who keeps the business running exactly as before, with the same staff and the same customers, still cannot use them.

Which means the only response is the one-time election described below, and that election must be made in respect of the year ending immediately before the acquisition. After closing there is nothing to be done.

A practitioner paper describes that election as existing to alleviate some of the harshness of that rule[3], which is a fair characterisation of a provision that destroys an asset outright.

Accrued Losses Are Forced Out

A separate rule that operates on the assets rather than the loss pool.

Commentary states that to the extent capital property has declined in value below the original cost, the excess must be deducted from the adjusted cost base of the property, and a capital loss is deemed to be realized, citing paragraphs 111(4)(c) and (d)[2].

The parallel rule for depreciable property is described as subsection 111(5.1) mandating a write-down to fair market value, with the write-down becoming capital cost allowance deducted in the deemed taxation year[6].

Note the word must, and this is our own emphasis.

This is not an election. A corporation holding property that has fallen in value is compelled to write it down at the deemed year end and to recognise the resulting loss in the stub year.

Which produces a specific and unhappy interaction with the rule above.

The forced write-down of non-depreciable capital property creates capital losses in the pre-acquisition year. Those capital losses then fall under subsection 111(4) and are extinguished unless something absorbs them.

So the corporation is required to crystallise a loss and then immediately forfeits it, unless it takes the affirmative step described in the next two sections.

The Worked Figures

A source's own numbers, which we checked and which reconcile exactly.

On the non-depreciable side: land with an adjusted cost base of $293,000 and a fair market value of $215,000 must be written down to fair market value under the rule cited as 111(4)(c), producing an allowable capital loss of $39,000[6].

We verified the arithmetic. The decline is $78,000, and at a one-half inclusion the allowable portion is $39,000, matching the source exactly.

On the depreciable side: assets with a capital cost of $416,000, an undepreciated capital cost balance of $276,000 and a fair market value of $184,000 are written down under 111(5.1), and the write-down of $92,000 becomes capital cost allowance deducted in the deemed taxation year[6].

That also reconciles: $276,000 less $184,000 is $92,000.

We report the check because it is worth knowing which commentary in this area is arithmetically sound, and this example is.

The two figures also illustrate the asymmetry cleanly, which is our own point. The $92,000 depreciable write-down becomes capital cost allowance, which feeds a non-capital loss and may therefore survive under the conditional rule. The $39,000 allowable capital loss feeds the net capital loss pool, which is extinguished with no exception.

The same event produces two losses with entirely different prospects, depending only on which asset generated it.

Losses Out, Gains Only If You Ask

The design feature that determines what a corporation should actually do. This section is our own analysis.

Put the two mechanisms side by side.

Accrued losses on property are realised compulsorily, under the provisions cited as 111(4)(c) and (d) for non-depreciable property and 111(5.1) for depreciable property[2][6].

Accrued gains on property are realised only if the corporation elects, under the provision cited as 111(4)(e)[2].

So the statutory default on an acquisition of control is that a corporation crystallises all of its bad news and none of its good news.

That default is close to the worst available outcome, because the losses it forces out are then extinguished by the very same event.

The asymmetry is deliberate rather than accidental. Compulsory loss realisation prevents a corporation from carrying unrealised losses across a change of ownership; optional gain realisation lets the corporation choose to bring gains forward to absorb losses that would otherwise die.

The practical instruction that follows is simple and time-limited: the election is the only lever, and it can only be pulled before the acquisition. A corporation that does nothing has chosen the default.

The Step-Up Election

The one-time response, and its limits.

Commentary states that under paragraph 111(4)(e), a corporation can elect to have any capital property, including depreciable property, that has appreciated in value deemed to be disposed of for any amount between the adjusted cost base and the fair market value, with the property then deemed to be reacquired at the designated amount[2].

It states the purpose directly: the election was designed to allow a corporation to avoid the expiry of net capital losses on an acquisition of control to the extent of accrued but unrealized capital gains[2].

A practitioner paper describes it as a one-time election to effectively use any otherwise unusable pre-acquisition-of-control capital losses against any accrued but unrealized capital gains on its property, thereby increasing the tax cost of, and reducing the accrued gain on, the gain property[3].

Another describes the result as converting otherwise expiring capital losses into additional tax cost bases for the designated properties[7].

Four features worth drawing out, ours.

The amount designated is anywhere between cost and fair market value, so the election is a dial rather than a switch. A corporation can crystallise exactly enough gain to absorb the losses and no more.

The benefit is a higher tax cost going forward, which is why it is described as converting a dying loss into cost base rather than simply saving tax.

It requires the corporation to have appreciated property. A corporation whose losses exceed its accrued gains cannot rescue the excess.

And it needs valuations, since both the fair market value ceiling and the designated amount depend on them, which takes time nobody has in the last week before a closing.

Every Category Of Property Has Its Own Rule

A point that broadens the exercise well beyond capital assets.

A practitioner paper lists the relevant rules as subsection 111(4) for non-depreciable capital property, subsection 111(5.1) for depreciable capital property, subsection 111(5.2) for cumulative eligible capital, subsection 10(1) for inventory, and subsection 111(5.3) for receivables, adding that a number of other tax attributes are subject to similar rules[3].

Another source notes that prior to 2017, subsection 111(5.2) applied to eligible capital property, and that the eligible capital property category was eliminated by the Federal Budget 2016 and replaced with a new capital cost allowance class, Class 14.1[5].

Two things follow, ours.

The exercise is a whole balance sheet review, not an asset register review. Inventory and receivables have their own write-down rules, which means a corporation with impaired stock or doubtful accounts has exposure in places nobody associates with an acquisition of control.

And the reference to eligible capital property is a reminder that this area has been amended repeatedly. Any commentary predating 2017 describes a category that no longer exists, which is a reason to check the vintage of anything read on this subject, including our own sources.

The phrase a number of other tax attributes are subject to similar rules[3] is doing a lot of work, and we have not enumerated what those are. Anyone facing a real transaction should have the full list run against their own balance sheet.

Non-Capital Losses Survive On Conditions

The conditional half of the pool.

Commentary describes subsection 111(5), together with subsection 251.2(2), as the provision under which previous non-capital losses from the corporation cannot be carried forward once the corporation ownership has been changed, subject to exceptions[1].

The exceptions are described as the business continuing to operate with an intention of making a profit[1], and elsewhere as the continuation of the same business, expectation of profit, and application against similar business income[6].

Another source frames it from the corporation's side: a corporation has the same legal identity before and after a complete change of shareholders and therefore remains the same taxpayer, but its non-capital losses and farm losses attributable to a particular business may lapse when its control changes hands, unless it continues to carry on the particular business[8].

That last formulation identifies why the rule exists at all, and this is our own reading. Because the corporation remains the same taxpayer through a change of ownership, nothing in the ordinary structure of the Act would stop losses moving with it. The restriction is what prevents a corporation with accumulated losses from being bought for the losses alone.

A practitioner paper describes the purpose in those terms: the restrictions exist to prevent arm's length transfers of losses when the original business of the corporation discontinues[5].

Which tells a vendor something useful. The rule is aimed at loss trading. A genuine operating business that continues under new ownership is the case the exceptions were written for.

The Same Or Similar Business Test

The condition that decides the outcome, and the one that depends on the buyer. This section is our own analysis.

Three requirements appear in the commentary: the business is carried on, it is carried on with a reasonable expectation of profit, and the losses are applied against income from that business or a similar business[6][1].

Each does separate work.

The carried on requirement means the business cannot be wound down. A purchaser who buys a company, absorbs its customer list into their own operation and dissolves the acquired activity has ended the business that generated the losses.

The expectation of profit requirement means it cannot be kept alive nominally. A skeleton operation maintained to preserve losses is precisely what the rule targets.

The same or similar income requirement is the streaming rule, and it is the one that surprises people. The losses do not shelter the corporation's income generally. They shelter income from the particular business that produced them, or one similar to it.

Our sources include a scenario framed around a company operating two distinct lines of business, one loss-making and one profitable[6], which is exactly where streaming bites: losses from one line cannot be applied against income from an unrelated line after the acquisition.

The consequence for a vendor is uncomfortable and worth stating plainly. Whether the losses survive is decided by what the purchaser does after closing, over a period of years, and no representation in a purchase agreement can guarantee it.

Business Investment Losses

A specific interaction reported consistently by two sources.

They state that where the taxpayer is a corporation control of which has been acquired at any time during the ten-year carryforward period for non-capital losses, the amount of allowable business investment losses that would otherwise be added to the corporation's balance of net capital losses is deemed to be nil[8][9].

Both add that this appears consistent with subsection 111(5), which effectively prohibits the amount of a corporation's allowable business investment losses added to its balance of non-capital losses from being carried forward after the corporation has undergone an acquisition of control[8][9].

We report this as the sources state it, note that the two sources use near-identical wording and may share an origin, and did not verify the ten-year period independently.

The point for a business owner, which is ours, is that an allowable business investment loss has a limited life during which it sits in the non-capital loss pool before converting to the net capital loss pool. An acquisition of control occurring during that window closes off both routes.

A corporation that has written off an investment in a small business corporation and is contemplating a change of ownership should therefore establish where in that cycle its losses currently sit, because the answer affects what, if anything, survives.

What The Forfeiture Is Worth

The magnitude, computed by us on illustrative assumptions.

Take a corporation with a net capital loss pool of $400,000.

At a one-half inclusion rate, that pool shelters $200,000 of taxable capital gains.

At an assumed 26.5 percent corporate rate, its value is roughly $53,000.

That amount is extinguished on closing, with no continuing-business exception available.

We attach the caution firmly: the inclusion rate has been subject to recent change and reversal in Canada and must be confirmed, and the corporate rate varies by province and by the type of income. A different inclusion rate moves this figure substantially.

Two observations, ours.

The amount is invisible in the transaction. It does not appear in the purchase price, it is not a liability, and neither party's closing statement reflects it.

And it is recoverable in advance and not afterwards. To the extent the corporation holds appreciated property, the election converts the dying loss into tax cost. To the extent it does not, the loss is simply gone.

Which makes the value of the pool something to establish months before a closing, not at the year end that follows it.

The Short Year Costs Something Too

A second-order effect that is easy to miss, computed by us.

Commentary notes that an acquisition of control affects the proration of small business deductions and capital cost allowance[7].

On the small business deduction, the mechanism is that the business limit is prorated across the two stub years. Our own figures on an assumed $500,000 limit and a 365-day year:

An acquisition on day 150 gives limits of roughly $205,479 and $294,521. On day 200, roughly $273,973 and $226,027. On day 270, roughly $369,863 and $130,137.

In each case the two add to $500,000, so nothing is lost in aggregate. The cost arises from where the income falls.

If a corporation earns $500,000 of active business income entirely within a 200-day stub, only about $273,973 attracts the small business rate and roughly $226,027 is taxed at the general rate. On assumed rates of 12.2 and 26.5 percent, that is about $32,322 of additional tax relative to a full-year limit.

Our own point is that this is a timing-of-income problem, not a limit problem. A corporation with seasonal or lumpy earnings, or one whose profitable period falls on one side of the closing, bears a real cost from a date chosen for commercial reasons.

Capital Cost Allowance In A Stub Year

The parallel effect on depreciation, computed by us on a class with an $800,000 balance at a 20 percent rate.

A 150-day stub permits roughly $65,753 against $160,000 for a full year. A 200-day stub, roughly $87,671. A 270-day stub, roughly $118,356.

Two observations, ours.

Unlike the loss forfeiture, this is deferral rather than loss. The undepreciated balance carries forward and the deduction is taken in later years, so the cost is the time value rather than the amount.

But it interacts with the point above. Reduced capital cost allowance in a stub year raises taxable income in that year, which can push income above a prorated small business limit that has itself been reduced by the same short period.

The two effects compound in the same direction, and both are driven purely by the calendar position of the closing date.

Other Things The Year End Accelerates

Two further consequences noted by commentary which we report without developing.

One source states that an acquisition of control accelerates capital gains reserves and shareholder loans[7].

We did not research either mechanism and do not explain them. What we would say is that both are common features of Canadian private corporations, and both are described here as being brought forward by the deemed year end.

A corporation that has taken a reserve on a prior sale, or that has a shareholder loan balance outstanding, therefore has exposure beyond the loss rules and should raise both specifically.

Readers of this series will recognise the shareholder loan point as connecting to a much larger issue we have addressed elsewhere, where the consequence of a loan falling into income is measured against the full principal rather than against an interest benefit.

A deemed year end that accelerates the relevant deadline is therefore not a technicality in that context. It is the difference between a repayment made in time and one made too late.

What The Auditor Actually Examines

The enquiry in practice. This section is our own analysis.

Whether a stub-year return was filed at all, and on the correct date, since the deemed year end triggers the full set of ordinary obligations.

The date control was acquired, and whether the beginning-of-day rule was applied or elected out of.

The sequence of closing steps, against the year in which each was reported.

Whether accrued losses were written down as required, across every category of property, not only capital assets.

Any step-up election, its designated amounts and the valuations supporting them.

Post-acquisition use of non-capital losses, tested against whether the business was carried on, with a reasonable expectation of profit, and whether the income sheltered came from that or a similar business.

Streaming across business lines, where the corporation carries on more than one.

The sixth item is where the exposure persists longest. The loss claim is made in years after the acquisition, so a reassessment can arrive well after everyone has stopped thinking about the transaction, and it depends on facts about how the business was actually run.

What Records Survive

The determination of the date and time control was acquired, and any election in respect of the beginning-of-day rule.

The closing agenda, showing the sequence of steps and when each was executed.

The stub-year return and its supporting computations, including the loss balances as at the deemed year end.

Valuations supporting every write-down and every designated amount, prepared at the time.

The step-up election as filed, with the property-by-property designations.

A schedule of loss balances by business line, since streaming requires losses to be traced to the business that produced them.

Evidence that the business continued after closing, being the operating records that demonstrate it was carried on with an expectation of profit.

What To Do

Value the loss pool before you negotiate. It is an asset that does not appear in the purchase price and, in the case of net capital losses, is destroyed by the closing itself.

Separate the two halves. Net capital losses are extinguished with no exception; non-capital losses survive only on conditions. They need different responses.

Assess the step-up election early. It requires appreciated property and supporting valuations, and it is the only lever available for capital losses.

Run every category of property, not just capital assets. Commentary lists separate rules for depreciable property, inventory and receivables, and notes other attributes are treated similarly.

Deal with the beginning-of-day rule explicitly. Commentary calls it a significant trap in staged acquisitions, and the election out exists because the default is often wrong.

Look at the closing date as a tax variable. Where a normal year end falls within seven days, commentary describes an election that avoids a short year entirely.

Model the stub-year cost. On our figures a mid-year closing can add roughly $32,000 of tax through small business deduction proration alone where income is concentrated on one side.

Diarise the stub-year filing. It is the obligation most likely to fall between the vendor's accountant and the purchaser's.

Trace losses to business lines now. Streaming requires it, and reconstructing it years later against a reassessment is far harder.

Get advice on whether an acquisition of control has occurred at all. There are statutory exceptions in related-party situations which we have not researched and which matter most in exactly the family and reorganisation cases that feel internal.

The Limits Of This Analysis

Several caveats matter. This is not tax advice; acquisition of control planning is time-critical, turns on the specific share structure and sequence of steps, and must be done with advisors before closing. Everything is stated as verified in August 2026 and requires confirmation. We have read no statutory provision and no judgment, and every section reference is as commentary cites it. We did not obtain Interpretation Bulletin IT-302R3 and report its definition of control as a source gives it. We did not research the statutory exceptions under which control is deemed not to have been acquired, which are central in family, related-party and reorganisation contexts, and this article should not be relied on in those situations. We did not establish how de jure and de facto control interact in this area. We did not verify the seven-day election mechanics, the ten-year carryforward period referred to in the business investment loss discussion, or the mechanisms by which capital gains reserves and shareholder loans are said to be accelerated. Two of our sources use near-identical wording on business investment losses and may share a common origin. Our sources include a university textbook, lecture notes and firm publications of varying vintage, and one source notes that a category referred to in older commentary was eliminated in 2016, so age is a live concern throughout this area. We checked and confirmed the two worked examples reproduced from one source. All other arithmetic is our own, applies an assumed one-half capital gains inclusion rate that has been subject to recent change and reversal in Canada, assumed corporate rates of 12.2 and 26.5 percent, an assumed $500,000 business limit and a hypothetical asset base, and is illustrative only. The loss-pool split framing, the compulsory-loss against elective-gain asymmetry, the streaming analysis and the audit examination structure are our own. This article does not address partnerships, trusts, non-residents, amalgamations and windups, foreign affiliates, or the general anti-avoidance rule.

Related Reading

Corporate Tax The Whole Loan, Not The Interest A balance whose repayment deadline runs from a year end that an acquisition of control can move. Corporate Tax The Twenty-One Year Rule Another deadline that arrives on a fixed date and destroys value if nothing is done before it. Corporate Tax Partner Time Has No Cost Where a valuation performed at a year end decides how much income is reported.

Frequently Asked Questions

Do our losses survive if the buyer keeps running the business?

Partly. Non-capital losses can survive where the business is carried on with a reasonable expectation of profit and the losses are applied against income from that or a similar business. Net capital losses are extinguished regardless, with no continuing-business exception, which is the distinction most owners miss.

Is there anything we can do about the capital losses?

Only before closing, and only if the corporation holds appreciated property. Commentary describes a one-time election under paragraph 111(4)(e) allowing appreciated capital property to be deemed disposed of at any amount between cost and fair market value, converting losses that would otherwise expire into additional tax cost base.

Why does the timing of the closing matter so much?

Because it creates a deemed year end. That means an extra return, prorated small business deduction and capital cost allowance, and elections due from a year end nobody planned. On our figures, income concentrated in a 200-day stub can attract roughly $32,000 of extra tax from proration alone.

We are closing in the afternoon, after a pre-closing reorganisation. Is that fine?

Check it carefully. Commentary states that subsection 256(9) deems control acquired at the beginning of the day unless the corporation elects otherwise, and calls this a significant trap where the acquisition involves staged steps. Steps intended to fall before the acquisition may be treated as falling after it.

Does this apply to a transfer within the family?

It may, and this is the question to take to an advisor rather than to this article. There are statutory exceptions under which control is deemed not to have been acquired in certain related-party situations, and we did not research them. Do not assume an internal transfer is outside these rules, and do not assume it is inside them either.

Which assets are affected by the forced write-downs?

More than most people expect. A practitioner paper lists separate rules for non-depreciable capital property, depreciable property, inventory and receivables, and notes that a number of other tax attributes are subject to similar rules. It is a whole balance sheet exercise rather than a fixed asset one.

References

1. Kwantlen Polytechnic University. Intermediate Canadian Tax: What Tax Issues Accompany the Acquisition of Control of a Corporation?, on acquisition of control being the change of control to a single person or a group of individuals; on Interpretation Bulletin IT-302R3 defining control of a corporation as ownership of such a number of shares as carries with it the right to a majority of the votes in the election of the board of directors; on section 249(4) deeming the taxation year end to be immediately prior to the acquisition of control, so that a return must be filed at that deemed year end; on sections 111(5)(a) and 251.2(2) meaning previous non-capital losses cannot be carried forward once ownership has changed, subject to exceptions including the business continuing to operate with an intention of making a profit; and on section 111(4)(a) and (b) meaning net capital losses cannot be used by the acquirer regardless of those exceptions. Note: an open educational tax textbook; we did not obtain the interpretation bulletin it cites. kpu.pressbooks.pub
2. University of British Columbia course materials, Chapter Fifteen Lecture Notes, on a deemed year end occurring on an acquisition of control under section 249(4), triggering all the normal administrative requirements of a regular year end including corporate tax returns, final tax payments and elections due within a specified period of a fiscal year end; on the year end being extendable by election where the normal year end occurs within seven days of the change of control, thus avoiding a short taxation year; on subsection 256(9) deeming control to have been acquired at the beginning of the day regardless of the time at which it was acquired, unless the corporation elects that the subsection will not apply, and on this being a significant trap where the acquisition is part of a series of staged steps; on net capital losses expiring on an acquisition of control pursuant to section 111(4); on capital property that has declined below its adjusted cost base having the excess deducted from the adjusted cost base with a capital loss deemed realised under sections 111(4)(c) and (d); and on section 111(4)(e) allowing a corporation to elect to have appreciated capital property, including depreciable property, deemed disposed of for any amount between adjusted cost base and fair market value and reacquired at that amount, the election having been designed to allow a corporation to avoid the expiry of net capital losses to the extent of accrued but unrealised capital gains. Note: teaching materials rather than practitioner guidance; undated in the copy we accessed. thor.ca
3. Suarez, S. Tax Planning With Losses in Canada, on subsection 249(4) governing the deemed year end; on the relevant write-down rules including subsection 111(4) for non-depreciable capital property, subsection 111(5.1) for depreciable capital property, subsection 111(5.2) for cumulative eligible capital, subsection 10(1) for inventory and subsection 111(5.3) for receivables, with a number of other tax attributes subject to similar rules; and on a one-time election available to alleviate some of the harshness of subsection 111(4), effectively using otherwise unusable pre-acquisition-of-control capital losses against accrued but unrealised capital gains on the corporation's property, thereby increasing the tax cost of and reducing the accrued gain on the gain property. Note: a practitioner paper; we accessed it as a PDF hosted by a third party and did not establish its publication date. businesstaxcanada.com
4. Alpert Law Firm. Share Purchase Transactions, Part 1, on subsection 249(4) treating a corporation's taxation year as having ended immediately before the time a change in control occurred, with a new taxation year treated as having commenced at that time; on that section requiring a separate determination of the income or loss of the corporation for the period ending immediately before the acquisition of control so that the loss carry-over restrictions can be applied to that taxation year; and on subsection 111(4) meaning that where control of a corporation is acquired, net capital losses for taxation years preceding the acquisition may not be carried forward to taxation years ending after the acquisition. Note: a law firm newsletter; publication date not established. alpertlawfirm.ca
5. Legacy Tax + Trust Lawyers. Acquisitions of Control and Effective Use of Corporate Losses, on restrictions on loss utilisation arising when control is acquired, to prevent arm's length transfers of losses when the original business of the corporation discontinues, an acquisition of control being a loss restriction event; on subsection 249(4) deeming the taxation year to end immediately before control is acquired with a new taxation year deemed to begin; on the designation in paragraph 111(4)(e) being able to include depreciable capital property; on the loss-streaming rules in subsection 111(5); on subsection 111(5.2) having applied to eligible capital property prior to 2017, that category having been eliminated by Federal Budget 2016 and replaced with Class 14.1; and on section 251.1 setting out how persons are affiliated, with affiliation for corporations determined by among other things de facto rather than de jure control. Note: a law firm paper dated around 2019; the pre-2017 category it describes no longer exists. legacylawyers.com
6. FutureCPA. Unveiling Tax Implications in Corporate Control Acquisition, on capital losses present at the deemed year end being forfeited while the utilisation of non-capital losses is subject to the continuation of the same business, expectation of profit, and application against similar business income; on a company owning land with an adjusted cost base of $293,000 and a fair market value of $215,000 being required by the rule cited as ITA 111(4)(c) to write it down to fair market value, resulting in an allowable capital loss of $39,000; on depreciable assets with a capital cost of $416,000, an undepreciated capital cost balance of $276,000 and a fair market value of $184,000 being written down under ITA 111(5.1), with the write-down of $92,000 becoming capital cost allowance deducted in the deemed taxation year; and on a scenario involving a company carrying on two distinct lines of business, one loss-making and one profitable. Note: a tax education website; we independently checked both worked examples and both reconcile exactly. futurecpa.ca
7. Shajani CPA. (2024, July). Mastering Acquisition of Control: Essential Tax Strategies for Family-Owned Enterprises, on the deemed taxation year end creating a short taxation year necessitating additional filings and immediate tax payments; on subsections 111(4) and 111(5) governing the triggering and utilisation of accrued losses and preventing loss selling; on acquisition of control affecting the proration of small business deductions and capital cost allowance and accelerating capital gains reserves and shareholder loans; and on the elective strategy converting otherwise expiring capital losses into additional tax cost bases for the designated properties. Note: an accounting firm publication which is partly promotional in character; we report its factual statements and did not research the reserve and shareholder loan acceleration it refers to. shajani.ca
8. MK & Associates. Section 111 Carryover of Losses, on a corporation having the same legal identity before and after a complete change of shareholders and therefore remaining the same taxpayer, but its non-capital losses and farm losses attributable to a particular business potentially lapsing when control changes hands unless it continues to carry on the particular business; and on a special rule under which, where control of a corporation has been acquired at any time during the ten-year carryforward period for non-capital losses, allowable business investment losses that would otherwise be added to the corporation's balance of net capital losses are deemed to be nil, which the source describes as consistent with subsection 111(5) prohibiting allowable business investment losses added to the non-capital loss balance from being carried forward after an acquisition of control. Note: an accounting firm commentary page; its wording closely matches reference 9 and the two may share a common origin. taxvancouver.com
9. MK Tax Accounting. Section 111 Carryover of Losses, cited for the same statements regarding allowable business investment losses following an acquisition of control during the ten-year carryforward period, and the consistency of that treatment with subsection 111(5). Note: wording closely matches reference 8; we treat the two as a single source for reliability purposes and did not verify the ten-year period independently. mktaxaccounting.com

This article is provided for general informational purposes and is not tax advice. No statutory provision or judgment was read; all section references are as commentary cites them. The statutory exceptions under which control is deemed not to have been acquired were not researched and this article should not be relied on for family or related-party transfers. All arithmetic other than the two verified worked examples is the authors' own, applies an assumed capital gains inclusion rate that must be confirmed for the year concerned, and is illustrative only.