Who files Form T1134 supplement?

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Answer

Filers of the foreign affiliate return with more than one affiliate, and groups where affiliates sit under one another. The obligation is decided by facts rather than by tax owing, which is why a nil position does not remove it.

The rule on who files

Filers of the foreign affiliate return with more than one affiliate, and groups where affiliates sit under one another.

Two of the firm’s advisers at a desk in the Delhi office

The exception

Consolidated group accounts do not satisfy it. Each affiliate is reported on its own, in its own currency, with its own income classification — which is why the work scales with entity count rather than revenue.

Who files Form T1134 supplement?
ItemAmount
Cost of the propertyC$181,000
Value on the departure dayC$365,620
Accrued gain treated as realisedC$184,620
Amount assumed to enter incomeC$92,310
Tax at an assumed 44%C$40,616

C$40,616 becomes payable in a year with no sale and no cash. That is what makes the departure date a planning variable: losses realised before it, an election to defer payment against security, and defensible valuations for anything private all change this number.

An illustration, not a client file. The sums are chosen for legibility and the thresholds are stated for the example alone — nothing reaches a filing until it has been confirmed at source for your own year.

What to do next

The full treatment — who it binds, the deadline, the penalty and the fixed fee — is on T1134 supplement — per affiliate. Ask before the move rather than after it, because most of the useful options expire on the date.

Reviewed for accuracy for the 2025 and 2026 filing seasons by Udit Gupta, Cross-Border Tax Expert, Legal Quotient Consultants. This is general information rather than advice about your file — a short call is the way to get the second.

Where who needs to file FATCA comes into this file

If you came here for who needs to file FATCA, this is where it is dealt with. The subject is Form T1134 supplement, and the page covers who it reaches, what then has to be filed, and what we charge to do the work.

Files that look like this one

Case study 1

One return for the whole structure rebuilt entity by entity

The group had been reporting its foreign operations as a single block, on the basis that the consolidated accounts told the whole story. The schedules are per-affiliate, so the filing was rebuilt from the ground up: an ownership chart first, then an agreed entity list, then a separate set of schedules for each affiliate taken from its own trial balance. The engagement produced a supplement for every affiliate in the group and a reconciliation between the entity figures and the consolidated accounts the directors were used to reading.

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Case study 2

An affiliate held under another affiliate that nobody had reported

The group's reporting followed the companies the Canadian entity owned directly, which left a lower-tier entity out for several periods. Affiliates that sit under one another are reported too, so the first task was an ownership chart drawn from registry documents rather than from the finance team's own list. That exercise turned up one further entity as well. The engagement produced supplements for the previously unreported affiliates, and an ownership chart the group now updates whenever its structure changes.

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Case study 3

Unwinding a consolidation back to entity level accounts

The only reliable numbers the client held were consolidated, with intercompany balances and charges already eliminated. Those eliminations are exactly what the per-affiliate schedules ask about, so the work was reversing them: obtaining local trial balances where they existed, rebuilding them from ledgers where they did not, and proving each entity back to the consolidation. The engagement produced entity-level statements for every affiliate, the supplements built from them, and a reconciliation trail linking the two so the exercise need not start from scratch again.

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Case study 4

Classifying an affiliate's income for Canadian purposes

The client's local accountants had classified the affiliate's income according to the rules where it operates, and that classification had been copied into earlier filings. It does not carry across: the categories in the schedules are Canadian ones, and the same receipts can sit differently here. The work was going through the affiliate's revenue streams and classifying each on Canadian principles, with the reasoning written down. The engagement produced a corrected set of schedules and a classification note that the following year's preparation now starts from.

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Case study 5

Dormant entities that took longer than the trading ones

Several affiliates had been inactive for years and produced no accounts, so nothing prompted anyone to report them. The facts of ownership decide the reporting, not activity, so each still needed its own schedules. Reconstructing years of near-nothing proved slower than reporting the group's trading companies, mainly because the records had to be assembled from registry filings and bank statements. The engagement produced supplements for each dormant affiliate and a minimal annual record-keeping routine so that the reconstruction is not repeated.

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Case study 6

Scoping an affiliate list after a run of acquisitions

Buying foreign businesses had brought in entities the client had never listed, and nobody could say with confidence how many affiliates the group now held. Deciding the reporting required that count first, so the work began with acquisition agreements and local registry records and produced a single affiliate list agreed with the client. Only then were the schedules prepared. The engagement produced an agreed affiliate register, supplements for each entity on it, and a short procedure for adding an entity when the group buys another.

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Case study 7

Canadian Pension Paid Abroad and Taxed at the Flat Rate

Pension and annuity payments to a non-resident carry a flat withholding that often exceeds what a return would produce. The alternative filing is elective, and whether it helps depends on the total income for the year rather than on the payment alone.

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Case study 8

A Country-by-Country Report and Who Files It

The obligation sits with the group and the filing can fall on a surrogate where the parent's jurisdiction does not exchange. Establishing who files where comes before preparing anything.

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All case studies — every published engagement in one place.

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The move year is its own project: the elections and valuations filed that year decide the next decade of both countries’ returns.

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Default withholding is 25% of gross: elective returns routinely turn over-withheld rent and pensions into refunds.

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Wills drafted for one country routinely misfire in the other — deemed disposition here, estate tax there, credits in between.

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Expansion raises the same four questions every time — entity, PE, repatriation, payroll. We answer them before the tax authorities do.

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The deduction is taken on the sale price, not the gain — which is why an NRI property sale strands cash unless the certificate is applied for before closing.

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Residency is decided on facts, not on a form — and the year you arrive or leave is the one where the largest amounts turn on the smallest details.

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A zero-tax country is only half the answer — the question that decides the bill is whether the country you came from still treats you as resident.

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Holding structures live or die on treaty access, beneficial ownership and substance — the MLI's principal-purpose test now sits over every arrangement.

A holding structure is only as good as its reporting. Foreign affiliates, accrued passive income and distributions each carry their own return, and the penalties on those attach to the form rather than to any tax being owed — so a structure that saves tax can still cost money if the information returns are late.

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Questions that come up on Form T1134 supplement

Do we need a separate T1134 supplement for each foreign company?

Yes. The supplement is per-affiliate: one set of schedules for each foreign entity in the group, not one set covering the group. So a filer of the foreign affiliate return with several affiliates prepares several supplements, each carrying that entity's own figures. This is why the work scales with the number of entities rather than with revenue — a group of small dormant affiliates can take more work than one substantial trading company. It is also why the entity list needs settling at the start. Finding another affiliate late in the process adds a whole schedule set, not a line to an existing one.

Can we use our consolidated accounts to complete Form T1134?

No. Consolidated group accounts do not satisfy the supplement, because the schedules ask about each affiliate separately: its own figures, in its own currency, with its own classification of income. Consolidation removes precisely what the form wants to see, since intercompany balances and charges have been eliminated and the entities merged into one set of numbers. In practice the first task on this kind of engagement is unwinding the consolidation back to entity-level trial balances, or obtaining them from the local bookkeepers. Groups that keep entity accounts as a matter of routine find this reporting considerably cheaper to produce.

Do affiliates held under another affiliate need their own supplement?

Yes. The supplement is required by filers with more than one affiliate and by groups where affiliates sit under one another, so a second or third tier is reported as well as the entities held directly. Tiered structures are where affiliates get missed, because a group's reporting habits tend to follow its direct holdings. The practical safeguard is to work from a full ownership chart rather than from the list of companies the Canadian entity pays or receives money from. An entity can be an affiliate that must be reported without ever having dealt with Canada at all.

Does a dormant foreign affiliate still need its own supplement?

Reporting is decided by the facts of ownership rather than by whether the affiliate did anything, so a quiet year does not remove it and a nil position is still a position that gets reported. Dormant entities are the ones most commonly missed, and the reason is understandable: nobody is preparing accounts for them, so they generate no paperwork to remind anyone they exist. It is usually cheaper to keep a minimal set of records for a dormant affiliate each year than to reconstruct several years of nothing later, which is a surprisingly slow exercise.

What currency do we report a foreign affiliate in?

Each affiliate is reported on its own, in its own currency, with its own classification of income — the schedules are built entity by entity rather than translated into a single group currency. Two consequences follow. The classification of an affiliate's income for these purposes is a Canadian question, so the labels used in the local statutory accounts cannot simply be carried across; the same receipt can sit in a different category here than it does there. And each entity's figures have to reconcile to its own books, which is why entity-level trial balances matter more than the group consolidation.

Why does adding one foreign subsidiary add so much reporting work?

Because the unit of work is the entity, not the group. Every affiliate brings its own set of schedules, its own currency and its own classification of income, so a new entity adds a complete supplement rather than a line on an existing one. Revenue barely affects it: a holding company with a single asset can take as long as a trading company several times its size. Groups that restructure with this in mind — collapsing dormant entities, avoiding tiers that serve no purpose — reduce their annual reporting permanently. The fee for the work is agreed in writing before it starts.

Branch or subsidiary — which should we use to expand?

A branch keeps one taxpayer: results consolidate at home, losses are usable sooner, and the exposure is that the branch is a permanent establishment whose profit the host country taxes, sometimes with a branch tax on repatriation. A subsidiary is a separate taxpayer with limited liability and local rates, at the cost of withholding on dividends home and transfer pricing on everything between them. The deciding facts are usually expected losses, liability and exit plans. See branch against subsidiary.

Which business structure has double taxation?

The corporation — specifically a US C corporation, where profit is taxed to the company and the dividend again to the shareholder. Sole proprietorships, partnerships and LLCs treated as flow-throughs are taxed once, in the owners' hands. Across borders that tidy answer breaks: an entity treated as a flow-through in one country can be opaque in the other, which produces a mismatch neither system planned for. See LLC against corporation for Canadians.

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