Cross-border tax terms — S

39 terms beginning with S, each defined at mechanism level.

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These entries describe how a term works rather than what it is worth in a given year. That is deliberate — figures move, and a figure remembered from a definition is the kind that ends up on a return unchecked.

Terminology is where cross-border risk hides. The rate is visible and gets checked; the classification is invisible and does not, which is why the classification is what usually goes wrong. Every entry closes with the filings it touches, because a definition you cannot attach to a form is not yet useful.

The question worth asking is not what a term like this means but whether it applies to you this year. That is a computation on your facts. Every page here carries the name of the person who reviewed it and the date they did.

  • Sojourner rule — A rule that makes a visitor resident for a whole year by reason of days spent in the country, regardless of ties.
  • Substantial presence test — The US day-count test for residence.
  • Split-year treatment — The mechanism by which a year of arrival or departure is divided into resident and non-resident periods for reporting, even though the year itself remains one tax year.
  • Source income — Income treated as arising in a particular country by that country's sourcing rules.
  • Saving clause — A treaty provision preserving a country's right to tax its own citizens and residents as if the treaty did not exist, which is why many articles do less for a US citizen than they appear to.
  • Section 195 TDS — India's obligation on a payer to deduct tax from a sum chargeable in India paid to a non-resident, with the payer liable if the determination is wrong.
  • Specified foreign financial asset — The class of asset reportable on the US FATCA statement: foreign accounts, foreign-issued securities, interests in foreign entities and certain foreign contracts.
  • Specified foreign property — The class of property reportable on Canada's foreign property statement.
  • Surplus accounts — The per-affiliate pools that decide how much of a foreign dividend arrives in Canada untaxed.
  • Subpart F income — Categories of a controlled foreign corporation's income taxed currently to its US shareholders, regardless of distribution.
  • Schedule FA — The foreign asset schedule of the Indian return.
  • Schedule FSI — The Indian schedule reporting foreign-source income and the tax paid on it, country by country, from which the foreign tax credit claim is built.
  • Section 216 — The Canadian elective return that taxes a non-resident's net rental profit at graduated rates instead of gross rent at the flat withholding rate.
  • Section 217 — The Canadian elective return for a non-resident receiving pension and similar periodic amounts, worth making only when the graduated result beats the flat withholding.
  • Section 116 clearance — The certificate the CRA issues on a non-resident's disposition of taxable Canadian property, without which the purchaser holds back part of the price.
  • Section 247 penalty — Canada's transfer-pricing penalty, which contemporaneous documentation is designed to prevent.
  • Secondary adjustment — A follow-on characterisation of the money that never moved after a transfer-pricing adjustment — often a deemed loan or dividend, with interest or withholding.
  • Safe harbour — A prescribed margin or method that a taxpayer may adopt for certainty, generally set above what a study would support.
  • Service PE — A permanent establishment created by furnishing services in a country for a period.
  • Subsidiary — A separate company in the foreign country, which ring-fences liability and creates withholding, transfer pricing and a second set of accounts.
  • Substance-based income exclusion — A carve-out in the global minimum tax rules that removes a return on payroll and tangible assets from the top-up base.
  • Situs — The location of an asset for tax purposes.
  • Section 94 trust — A trust deemed resident in Canada because of a resident contributor or beneficiary, bringing its income into the Canadian base.
  • Streamlined foreign offshore — The US catch-up route for non-willful filers living abroad, requiring back returns, account reports and a signed non-willfulness certification.
  • Streamlined domestic offshore — The US catch-up route for non-willful filers resident in the United States, which carries a penalty computed on the unreported asset values.
  • Statute-barred year — A year the authority may no longer reassess.
  • Simplified registration — A sales-tax registration route for non-resident digital suppliers that is easier to operate and gives no input tax recovery — the wrong trade for a business with local costs.
  • Shadow payroll — A host-country payroll that pays nobody, existing so the host receives the withholding and reporting due on compensation paid elsewhere.
  • Secondment — An arrangement placing an employee with another group entity.
  • Stock option benefit — The employment benefit arising on an option, sourced across the period between grant and vest so two countries can tax slices of one gain.
  • Sourcing by workdays — The apportionment of employment income and equity gains by reference to days worked in each country — reproduced from a travel record, not from memory.
  • Self-custody — Holding crypto without an intermediary, which is treated differently from a custodial holding under several reporting regimes.
  • Staking reward — Consideration received for participating in a network, generally an income event valued at receipt and becoming the cost base for a later disposal.
  • Superficial loss — A denied loss where the same or identical property is reacquired within a defined period around the sale by the taxpayer or an affiliated person.
  • Secure portal — An access-controlled channel for tax documents, used because tax records are the most sensitive papers most people own.
  • Scope boundary — The written line between what we do and what another adviser keeps, agreed at the start so nothing is duplicated or dropped.
  • Second opinion — A review of a filed position, which most often finds an unclaimed credit, a missed information return and an undisclosed treaty position.
  • Streamlined filing — The US catch-up route for non-willful filers, requiring a limited number of back returns and account reports plus a signed certification.
  • Section 116 certificate — The Canadian clearance certificate on a non-resident's disposition of taxable Canadian property.

What the S entries have in common

39 terms begin with S. What the entry under this letter turns on is set out on its own page, together with the returns it reaches and what we charge to handle them. Three to start with: Sojourner rule, Substantial presence test and Split-year treatment.

Nearby letters

R — 16 terms · T — 28 terms. The full A–Z lists all 297 terms in one place.

Back to the full glossary · Cross-border tax answers · Side-by-side comparisons

A named reviewer on every filing

A cross-border question, quoted before we start

One call to the 24-hour helpline is enough to tell you what has to be filed, what it costs, and whether you need us at all.

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  • Offices in India, the USA, Canada and the UAE
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Cross-border tax case studies

Case study 1

Substantial presence test miscounted days corrected before a US filing was finalised

A client believed they had stayed under the substantial presence test's threshold based on a rough personal recollection of their US travel, without a documented day count. We reconstructed the actual days from flight records and confirmed the client had in fact crossed the threshold, changing their filing status for the year and requiring the return to be prepared on the correct residency basis rather than the client's assumption.

Case study 2

Section 116 clearance certificate obtained ahead of a non-resident property closing

A non-resident seller needed a Section 116 clearance certificate before a property sale could close without the buyer being exposed to withholding liability. We prepared the certificate application with the required computation, obtained it ahead of the agreed closing date, and the transaction completed with the buyer's withholding obligation properly discharged.

Case study 3

Streamlined foreign offshore procedure used to correct years of unreported accounts

A client living permanently outside the US had unknowingly failed to file FBARs for several years on accounts held in their country of residence. We assessed their eligibility for the streamlined foreign offshore procedure given their genuinely non-wilful circumstances and foreign residence, prepared the required filings under that procedure, and brought the client's compliance current without the penalty exposure a standard disclosure would have carried.

Case study 4

Secondment structured to manage shadow payroll obligations across two countries

A company seconding an employee to a foreign subsidiary needed the arrangement structured so payroll obligations in both the home and host country were properly addressed, rather than assuming the host payroll alone was sufficient. We reviewed the secondment terms, set up the shadow payroll reporting required in the home country alongside the host country payroll, and confirmed both jurisdictions' obligations were met without duplicated or missed withholding.

Case study 5

A Secondment Whose Paperwork Decided the Tax

Who employs, who directs and who bears the cost are the facts a treaty article turns on, and an assignment letter is where they are recorded. Drafting it with the tax position in view prevents an argument later.

Read how this one runs
Case study 6

A Residency Determination Review After Leaving the Country

Residence is decided on ties, not on a form, and the review asks for evidence of every one of them. The file assembles the ties that were severed and the ones that remained, and answers the questionnaire against the treaty rather than around it.

Read how this one runs
Case study 7

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.

Read how this one runs
Case study 8

A Taxable Presence Created Without an Office

A dependent agent habitually concluding contracts can create a permanent establishment where there is no premises at all. The review tests what the person actually does against what the treaty describes.

Read how this one runs

All case studies — every published engagement in one place.

Core International & Cross-Border Tax Services

International Tax Planning & Advisory

Strategy and compliance for income, assets and families spread across borders.

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.

Industries & Client Types We Serve Worldwide

Global E-commerce & Marketplaces
Technology & SaaS
Professional Services Firms
Cross-Border Real Estate
Importers, Exporters & Manufacturers
Athletes, Artists & Entertainers
Remote Workers & Digital Nomads
Investment Funds & Holding Companies
Global E-commerce & Marketplaces
  • Foreign VAT / GST / sales tax registrations
  • Marketplace withholding reviews
  • Inventory nexus & PE analysis
  • Multi-currency books reconciled
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Technology & SaaS
  • Cross-border revenue sourcing & withholding
  • IP structuring with real substance
  • Equity for cross-border teams
  • U.S. expansion: entity & PE setup
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Professional Services Firms

Firms and partners working across borders meet Regulation 105 withholding, PE risk on long engagements and per-country payroll for travelling staff.

A partnership is taxed in the hands of its partners, so one engagement abroad can reach every partner's personal return. The order matters: the waiver is applied for before the invoice, the presence is tracked before it becomes an establishment, and the payroll is registered before the first day worked in the other country.

  • Reg 105 / 102 waivers
  • Permanent establishment risk
  • Partner mobility planning
  • Cross-border withholding recovery
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Importers, Exporters & Manufacturers
  • Transfer pricing documentation (s.247)
  • Customs value vs transfer price
  • Foreign affiliate reporting (T1134)
  • Country-by-country reporting
Explore Trade & Manufacturing
Athletes, Artists & Entertainers
  • Reg 105 & U.S. CWA agreements
  • Multi-state & country calendars
  • Touring income allocation
  • Royalty & image-rights withholding
Explore Athletes & Entertainers
Remote Workers & Digital Nomads
  • Residency analysis before moving
  • Employer payroll exposure
  • Totalization & social security
  • Foreign tax credits
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Investment Funds & Holding Companies
  • Treaty access & PPT reviews
  • FAPI & surplus computations
  • Withholding-efficient routing
  • Governance & substance
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Our practitioners are alumni of leading accounting and tax institutions

Where our partners studied — CPA Canada (In-Depth Tax Program), AICPA, the Institute of Chartered Accountants of India and the Malaysian Institute of Accountants.

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