Merge only where two corporations are doing one job
The right number of corporations is the number of distinct jobs your portfolio actually needs, and most groups have drifted away from that number in one direction or the other. Before anyone quotes you a reorganization, put each company through a short test: does it have something the others do not? A corporation earns its keep when at least one of these is true of it.
- Its own lender. A separate mortgage with its own covenants, its own reporting and its own security package is a real reason to stay separate.
- Its own owners. A co-investor, a different split between family members, or shares held by a trust for one branch of the family.
- Its own risk. A development site, a property with environmental history, a building with heavy public traffic, or anything with an active dispute.
- Its own destination. A building meant for a specific child, or one meant to be sold while the rest are held.
- Its own tax character. Commercial space charging HST beside exempt residential rent, or a property held for resale rather than long-term rent.
The companies that fail every line are your merge candidates, and in most groups we look at, two or three of them exist for reasons that expired years ago: the corporation set up for a property you no longer own, the numbered company that holds nothing but a bank account and an intercompany balance, the second entity created because a lender asked for it on a loan that has since been repaid. Each of those still costs a T2 return, financial statements, HST filings, an annual return, a minute book, a bank account and a permanent place in the web of balances described in how intercompany transactions should be recorded in a real estate group. That is the real case for merging: not tax savings, but removing recurring cost and complexity that is buying you nothing.
Amalgamating is cheaper than moving the property
If the goal is to end up with fewer companies holding the same buildings, an amalgamation is almost always the cheaper route, because it does not convey the real estate anywhere. Two or more taxable Canadian corporations file articles of amalgamation under Ontario or federal corporate law and continue as one company; short-form procedures exist where one of them owns all the shares of the other, or where both are wholly owned by the same parent. The merged corporation holds the predecessors' property, owes their debts and keeps their leases and contracts by operation of law, and the Income Tax Act treats a qualifying merger as a tax-deferred event rather than a sale.
That distinction is worth real money in Ontario. Because there is no conveyance from one party to another, the land transfer tax that applies when land changes hands generally does not arise on the merger itself, and neither does the additional municipal land transfer tax on properties inside the City of Toronto. Confirm the registration mechanics with the lawyer doing the filing, but the principle holds: merging companies is not the same transaction as selling a building between them.
The alternative route, moving a property out of one corporation and into another so the empty company can be closed, is a transfer with a transfer's costs. Land transfer tax is calculated on the value of what moves, an HST analysis is needed on the supply of real property, the mortgage has to be repaid, assumed or replaced, title is re-registered, and for income tax it is a disposition at fair market value unless a section 85 election is filed to defer it. Ontario does provide a limited deferral of land transfer tax on certain transfers between affiliated corporations, but it has to be applied for, it carries conditions, and it can unwind if those conditions stop being met. Put simply, if the buildings are staying where they are, merge the companies; if a building genuinely has to move, price the transfer taxes before anything is signed.
| What is at stake | Amalgamation | Moving the property to another company |
|---|---|---|
| Title to the land | Stays where it is; the merged corporation continues the predecessors | Conveyed and re-registered in the new owner's name |
| Ontario land transfer tax | Generally not triggered, because nothing is conveyed | Payable on the value transferred, plus the municipal tax in Toronto, unless a deferral applies |
| HST | Generally no supply arises on the merger itself | A supply of real property, needing an election, a self-assessment or actual tax |
| Income tax | Generally deferred; property carries over at its existing cost amounts | A disposition at fair market value unless a section 85 election is filed |
| Mortgages | Assumed by the merged corporation, with the lender's consent | Repaid, assumed or replaced, usually with fresh underwriting and fees |
| Liabilities and claims | Every predecessor's liabilities become the merged corporation's | Only what the buyer expressly assumes moves with the property |
Source: Ontario — Land Transfer Tax.
Your mortgages set the timeline, not your accountant
In a leveraged property group the lenders decide when and whether this happens, because nearly every commercial mortgage restricts a change in the borrower and an amalgamation is a change in the borrower. Expect to ask each lender for written consent, and expect that request to open the file: consent fees, legal fees, sometimes a fresh appraisal, and a credit review of the merged borrower rather than the small single-property company they originally underwrote. Insured multi-residential financing adds another approval on top. Personal and corporate guarantees are usually re-papered at the same time, against a larger borrower, which is a term worth negotiating rather than signing through.
Sequencing is most of the saving. The cheapest time to merge is when a mortgage is already up for renewal or the lender is already re-underwriting the group, because the consent, the appraisal and the new documents get done once instead of twice. Merging six months before three renewals means paying for the same exercise twice. This is also where the upside sits: one larger borrower with a consolidated cash flow view and a single covenant package often prices better than five small companies with five sets of statements, and it makes the annual reporting your bank asks for genuinely simpler.
Then there is the term most owners do not see coming. Before the merger, each corporation's mortgage is secured by its own building. Afterwards one borrower owns everything, and lenders commonly want security across the whole portfolio, general security agreements and cross-default clauses.
That means a problem at one property can put the others in default, and selling a single building later requires a discharge and often a paydown. Ask, before you sign consents, whether each mortgage will stay tied to its own property or become part of one pooled security package, because that answer changes what your portfolio can do for the next decade.
One genuinely tidy consequence: balances the merging corporations owe each other simply disappear, since a company cannot owe itself money, and the tax rules are built so that this ordinarily happens without triggering the debt forgiveness rules that a casual write-off would. For a group carrying years of stale due-to and due-from accounts, that alone can be worth the exercise, and it is the clean version of the problem set out in how intercompany loans affect a corporate group.
What you give up: one building's problem becomes every building's problem
The real cost of merging is not on the tax bill; it is that the merged corporation owns all the properties and answers for all the claims. Each separate corporation is a container: an injury claim beyond insurance limits, an environmental order on a contaminated site, a construction lien, a tenant dispute or an employment claim can normally only be collected from the company that owns that building. Amalgamate, and every predecessor's liabilities, including the ones nobody has discovered yet, become obligations of the single company that now holds the whole portfolio. Tax history travels the same way, so a later reassessment of one predecessor is collected from the merged company and, indirectly, from every property in it.
That is why some companies should never be merged, however inconvenient they are. The logic is the same one behind separating property ownership from operating risk, applied inside a portfolio instead of between a business and its building.
Keep a development or construction entity out of a stabilized rental company. Keep anything with environmental exposure, a former gas station, dry cleaner or industrial site, in its own corporation. Keep a property with an active lawsuit, a co-investor or an unusual tenant in the corporation it is already in, and merge around it.
Merging also removes options. A single-property corporation can be sold by selling its shares, which some buyers prefer and which changes the land transfer tax analysis for them; once those shares also carry four other buildings, that route closes and you are back to selling the property itself. Worth being honest about the limit here: corporations that hold property for rent are usually not carrying on an active business for tax purposes, so their shares generally do not qualify for the lifetime capital gains exemption. This is about deal flexibility and buyer preference, not about an exemption you were going to claim.
The last thing you give up is granularity in the estate plan. Separate corporations let different buildings go to different people, on different timelines, with different financing attached. One merged company leaves a single block of shares that everyone has to share, which works when the next generation genuinely intends to run the portfolio together and creates a long argument when it does not.
Anyone weighing a merger while also planning succession should look at what happens to a real estate corporation when a shareholder dies first, because the structure you leave behind is the structure your executor has to work with. Getting those two decisions in the right order is most of what a business estate planning CPA in Ontario does on a property file.
What carries over: cost base, undepreciated capital cost and losses
On a properly executed amalgamation the tax attributes ride through, which is why the merger itself is rarely the expensive part. No property is disposed of at fair market value, so there is no capital gain and no recapture triggered by the merger; each building keeps the adjusted cost base it already had, and the accrued gain stays accrued until an actual sale. Each capital cost allowance class carries its undepreciated capital cost across, and because rental buildings above a modest cost sit in their own separate class per property, those classes travel individually rather than being pooled into one.
There is one real tax gain worth naming, and it is specific to rental portfolios. Capital cost allowance on rental buildings cannot be used to create or increase a rental loss, and that restriction is applied to a taxpayer's rental income as a whole. Five corporations apply the limit five times, so depreciation is stranded in the properties with weak cash flow while the strong ones pay tax.
One corporation applies it once across the portfolio, and the CCA that was unusable becomes available against the group's combined rental income. That single change is often the strongest number in the whole analysis, and it is worth calculating on your actual properties before deciding either way.
Loss carryforwards themselves generally follow the predecessors into the merged corporation, subject to the rules that restrict losses where control of a company has changed. The direction matters: those losses can normally be used going forward, but they generally cannot be carried back against a predecessor's years before the merger. If one of your companies has a loss you were counting on carrying back for a refund, claim it before the amalgamation rather than after.
Two mechanical points decide the date. Each predecessor has a deemed taxation year-end immediately before the amalgamation, so the year of the merger produces extra T2 returns and short taxation years, and CCA is prorated in a short year. HST needs its own attention: the merged corporation's registration, filing frequency and any elections between the former companies have to be set up rather than assumed.
What usually does not change is the rate story, because related real estate corporations are almost always associated already and were sharing one small business limit, and rental income is generally investment income in a corporation unless the business employs more than five full-time people. Merging simplifies the group; it rarely changes the tax rate on the rent.
What changes the answer
Six facts decide whether a merger is worth doing, and which companies belong in it:
- Whether each corporation has its own lender. Separate mortgages with separate security are the strongest reason to leave a company alone, and consents are the largest cost when you do not.
- The risk sitting in each property. Development, environmental history or an active claim keeps a building in its own corporation regardless of the paperwork saved.
- Who is meant to inherit what. If the buildings have different destinations, the separate companies are the plan, not the clutter.
- Whether a property might be sold soon. A pending sale argues for waiting, both for the share-sale option and to avoid re-papering security twice.
- Where the losses and unused CCA are stranded. Pooling rental income can free depreciation and losses that are doing nothing today.
- How much cleanup the books need first. Intercompany balances, missing agreements and unfiled HST have to be resolved before anyone can merge cleanly, and that work usually comes first.
We work through this with property owners across Mississauga and the GTA the same way each time: map what every corporation is actually doing, price the merge against the cost of leaving it alone, call the lenders early, and then run the amalgamation with your lawyer in the right order. It is defined-scope work, quoted in writing before it starts, and the ongoing books and reporting for whatever structure you end up with are part of our real estate investor tax planning work. If you want a read on whether your group has more companies than purposes, start with a free 15-minute discovery call.
