Cross-border tax terms — I

4 terms beginning with I, each defined at mechanism level.

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Each entry answers two questions — what the term picks out, and what changes once it applies. Neither answer needs a number, and a number in a definition tends to outlive its accuracy.

Cross-border vocabulary is mostly a record of disagreement. Two countries look at one arrangement and classify it differently, and the gap between the classifications is where the double tax, or the unintended relief, actually lives. Every entry closes with the filings it touches, because a definition you cannot attach to a form is not yet useful.

Recognising a term like this in your own paperwork is the useful skill. Working out which side of it you fall on is a short call. Every page here carries the name of the person who reviewed it and the date they did.

  • Interquartile range — The middle half of a set of comparable results, commonly used as the acceptable range in a transfer-pricing analysis.
  • Implicit support — The benefit a group member gets from mere association with the group.
  • Input tax credit — Recovery of tax paid on business inputs.
  • Importer of record — The party legally responsible for an import, and therefore the party that can recover the import tax.

What the I entries have in common

4 terms begin with I. The term below is defined in full on its own page, alongside the filings it governs and the fee for dealing with them. Three to start with: Interquartile range, Implicit support and Input tax credit.

Nearby letters

H — 4 terms · J — 2 terms. The full A–Z lists all 297 terms in one place.

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Files that look like this one

Case study 1

An Adjustment in One Country and No Relief in the Other

A pricing adjustment taxes the same profit twice unless the other country makes a corresponding one. The mutual agreement route is what produces that relief, and it is opened on a timetable set by the treaty rather than by either revenue authority.

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Case study 2

US Estate Tax on Assets a Canadian Did Not Know Were Exposed

US shares and US real estate sit inside the US estate tax net regardless of where the owner lives. The treaty provides relief that is proportionate rather than automatic, and the calculation depends on the worldwide estate.

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Case study 3

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 4

Social Security Contributions Owed in Two Countries at Once

A totalization agreement assigns contributions to one system and exempts the other, but only against a certificate obtained in advance. Without it both sets come out of the same salary and neither is straightforward to recover.

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Case study 5

One Salary, Two Countries Claiming It

A US citizen resident in Canada, taxed in full on both sides because each return was prepared without the other in view. Deciding which country has the first right to the income, then claiming relief on the second return in the right order, is what stops the same dollar being taxed twice.

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Case study 6

A Relief That Turned on Days Nobody Had Recorded

Treaty exemption, residence and social security are each decided by a count that has to be evidenced rather than recalled. The engagement builds the record from tickets, rosters and payroll before applying any article.

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Case study 7

Trips That Added Up to a Filing Obligation

Short visits are tracked against a treaty threshold that is measured over a moving window rather than a calendar year. Where the threshold is passed, the obligation reaches back over the whole period.

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Case study 8

A Foreign Subsidiary That Nobody Had Been Reporting

Owning a company abroad triggers an information return separate from the corporate return, with its own penalty. The work is the surplus and income computations behind it, which also determine how a future dividend is taxed on the way home.

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One coordinating team: filings on every side of the border are sequenced so treaty relief and foreign tax credits are claimed once — and in the right country.

U.S. & Cross-Border Tax Returns

Dual filers: U.S. citizens in Canada and Canadians with U.S. income run two parallel systems — we prepare both, in the right order, every year.

Expat & Emigration Tax

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

Non-Resident Canadian Tax

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

Transfer Pricing & BEPS

Documentation prepared with the return is the cheapest insurance in international tax; reconstructing it during an audit is the most expensive.

Cross-Border Estates & Trusts

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

Cross-Border Corporate Tax

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

India Tax for NRIs & Returning Residents

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.

Canadian Tax with a Foreign Element

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.

UAE Tax for Expats & Their Home Country

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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Global E-commerce & Marketplaces

Cross-border tax for sellers shipping worldwide: marketplace withholding, foreign registrations and inventory nexus handled before they become audits.

Marketplaces withhold, remit and report in their own right, so the tax position of a single sale is decided by where the stock sat, where the buyer was and which platform collected — not by where the company is registered. We reconcile the platform's own filings against the returns before either is submitted.

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Importers, Exporters & Manufacturers

  • Transfer pricing documentation (s.247)
  • Customs value vs transfer price
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  • Country-by-country reporting
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Athletes, Artists & Entertainers

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Remote Workers & Digital Nomads

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Investment Funds & Holding Companies

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