297 pages. The terms two tax systems use differently, defined once. Each one opens with the part that applies to that situation and nowhere else — a threshold, a treaty article, a filing that one group owes and the group beside it does not — and works one example through in full.
Cross-border tax glossary
The terms two tax systems use differently, defined once.
- 15+Years of the founder's cross-border experience
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297 pages in this section. The terms two tax systems use differently, defined once.
← All cross-border tax answers
Every page in this section is written to the same standard: it opens with the block that exists nowhere else on the site — a threshold, a treaty article, a rule that applies to one group and not the one beside it — and it carries one worked example, worked through in full rather than a set of generalities.
Where a page needs a statutory threshold, a rate or a day-count, that figure is verified against the issuing authority before it ships. Where it cannot be verified for the year in question, the page states the mechanism and quotes no number, because a wrong threshold on a page like this is worse than no page at all. Every statutory page also carries the name of the person who reviewed it and the date they did.
Fees are fixed and agreed in writing before any work begins, and you review the finished work before it is filed. Documents move through a secure portal and you can meet us at any of our offices, so where you are makes no difference to how it works.
Showing all 297 pages.
A 13
- Arbitration clause — meaning in cross-border tax
- Annual information statement — meaning in cross-border tax
- Arm's length principle — meaning in cross-border tax
- Advance pricing arrangement — meaning in cross-border tax
- Adjusted cost base — meaning in cross-border tax
- Apportionment — meaning in cross-border tax
- Alter ego trust — meaning in cross-border tax
- Advance ruling — meaning in cross-border tax
- Angel tax — meaning in cross-border tax
- Advance tax — meaning in cross-border tax
- Airdrop — meaning in cross-border tax
- Authorised representative — meaning in cross-border tax
- Arrival valuation — meaning in cross-border tax
B 10
- Bona fide residence test — meaning in cross-border tax
- Beneficial ownership — meaning in cross-border tax
- Backup withholding — meaning in cross-border tax
- BEAT — meaning in cross-border tax
- Benchmarking study — meaning in cross-border tax
- Branch — meaning in cross-border tax
- Business purpose test — meaning in cross-border tax
- Business visitor — meaning in cross-border tax
- Black Money Act — meaning in cross-border tax
- BEPS — meaning in cross-border tax
C 25
- Closer connection — meaning in cross-border tax
- Change of use — meaning in cross-border tax
- Cessation of residence — meaning in cross-border tax
- Certificate of residency — meaning in cross-border tax
- Carryback and carryforward — meaning in cross-border tax
- Credit method — meaning in cross-border tax
- Competent authority — meaning in cross-border tax
- Chapter 3 withholding — meaning in cross-border tax
- Chapter 4 withholding — meaning in cross-border tax
- Controlled foreign affiliate — meaning in cross-border tax
- CFC — meaning in cross-border tax
- Country-by-country report — meaning in cross-border tax
- Contemporaneous documentation — meaning in cross-border tax
- Comparable uncontrolled price — meaning in cross-border tax
- Cost plus method — meaning in cross-border tax
- Corresponding adjustment — meaning in cross-border tax
- Cost contribution arrangement — meaning in cross-border tax
- Construction PE — meaning in cross-border tax
- Central management and control — meaning in cross-border tax
- Clearance certificate — meaning in cross-border tax
- Customs valuation — meaning in cross-border tax
- Certificate of coverage — meaning in cross-border tax
- Clubbing of income — meaning in cross-border tax
- Compliance calendar — meaning in cross-border tax
- CbCR — meaning in cross-border tax
D 17
- Deemed resident — meaning in cross-border tax
- Dual-status alien — meaning in cross-border tax
- Domicile — meaning in cross-border tax
- Deemed disposition — meaning in cross-border tax
- Departure tax — meaning in cross-border tax
- Double taxation — meaning in cross-border tax
- DTAA — meaning in cross-border tax
- Dual consolidated loss — meaning in cross-border tax
- DEMPE — meaning in cross-border tax
- Dependent agent — meaning in cross-border tax
- Deemed dividend — meaning in cross-border tax
- Deemed disposition on death — meaning in cross-border tax
- Delinquent FBAR — meaning in cross-border tax
- Distance selling — meaning in cross-border tax
- Day-count record — meaning in cross-border tax
- Departure valuation — meaning in cross-border tax
- Dual citizenship — meaning in cross-border tax
E 19
- Emigrant — meaning in cross-border tax
- Effectively connected income — meaning in cross-border tax
- Economic double taxation — meaning in cross-border tax
- Exemption method — meaning in cross-border tax
- Exchange of information — meaning in cross-border tax
- Exempt surplus — meaning in cross-border tax
- Excess distribution — meaning in cross-border tax
- Exit charge — meaning in cross-border tax
- Earnings stripping — meaning in cross-border tax
- Economic substance — meaning in cross-border tax
- Economic nexus — meaning in cross-border tax
- Effective tax rate — meaning in cross-border tax
- Estate tax treaty relief — meaning in cross-border tax
- Exempt supply — meaning in cross-border tax
- Equalisation levy — meaning in cross-border tax
- Economic employer — meaning in cross-border tax
- Engagement letter — meaning in cross-border tax
- Evidence pack — meaning in cross-border tax
- Expat — meaning in cross-border tax
F 39
- Factual resident — meaning in cross-border tax
- FDAP income — meaning in cross-border tax
- Foreign earned income — meaning in cross-border tax
- Foreign earned income exclusion — meaning in cross-border tax
- Foreign housing exclusion — meaning in cross-border tax
- Foreign tax credit — meaning in cross-border tax
- FTC basket — meaning in cross-border tax
- Functional currency — meaning in cross-border tax
- FBAR — meaning in cross-border tax
- FinCEN 114 — meaning in cross-border tax
- FATCA — meaning in cross-border tax
- Form 8938 threshold — meaning in cross-border tax
- Foreign affiliate — meaning in cross-border tax
- FAPI — meaning in cross-border tax
- FDII — meaning in cross-border tax
- Form 67 — meaning in cross-border tax
- Form 10F — meaning in cross-border tax
- Form 26AS — meaning in cross-border tax
- Form 5471 — meaning in cross-border tax
- Form 5472 — meaning in cross-border tax
- Form 3520 — meaning in cross-border tax
- Form 8865 — meaning in cross-border tax
- Form 8858 — meaning in cross-border tax
- Form 926 — meaning in cross-border tax
- FIRPTA — meaning in cross-border tax
- Fixed place of business — meaning in cross-border tax
- Foreign grantor trust — meaning in cross-border tax
- Forced heirship — meaning in cross-border tax
- First-time penalty abatement — meaning in cross-border tax
- Faceless assessment — meaning in cross-border tax
- FEMA — meaning in cross-border tax
- FCNR account — meaning in cross-border tax
- Form 15CA — meaning in cross-border tax
- Form 15CB — meaning in cross-border tax
- Form 3CEB — meaning in cross-border tax
- FC-GPR — meaning in cross-border tax
- FC-TRS — meaning in cross-border tax
- Fixed fee — meaning in cross-border tax
- Form 1040-NR — meaning in cross-border tax
G 10
- Green card test — meaning in cross-border tax
- Grossing up — meaning in cross-border tax
- GILTI — meaning in cross-border tax
- GloBE rules — meaning in cross-border tax
- GAAR — meaning in cross-border tax
- Graduated rate estate — meaning in cross-border tax
- Gift splitting — meaning in cross-border tax
- Grantor trust — meaning in cross-border tax
- GST/HST — meaning in cross-border tax
- GIFT City — meaning in cross-border tax
H 4
I 4
J 2
L 5
M 7
- MLI — meaning in cross-border tax
- Mutual agreement procedure — meaning in cross-border tax
- Mark-to-market election — meaning in cross-border tax
- Master file — meaning in cross-border tax
- Marital deduction — meaning in cross-border tax
- Marketplace facilitator — meaning in cross-border tax
- MAT — meaning in cross-border tax
N 15
- Non-resident alien — meaning in cross-border tax
- NRI — meaning in cross-border tax
- Newcomer — meaning in cross-border tax
- Non-discrimination article — meaning in cross-border tax
- NR4 — meaning in cross-border tax
- NR6 — meaning in cross-border tax
- NR7-R — meaning in cross-border tax
- Nexus — meaning in cross-border tax
- Non-resident trust — meaning in cross-border tax
- Non-willfulness certification — meaning in cross-border tax
- Notice of objection — meaning in cross-border tax
- Net worth assessment — meaning in cross-border tax
- NRE account — meaning in cross-border tax
- NRO account — meaning in cross-border tax
- Non-resident — meaning in cross-border tax
O 4
P 22
- Part-year resident — meaning in cross-border tax
- Physical presence test — meaning in cross-border tax
- Principal purpose test — meaning in cross-border tax
- Part XIII tax — meaning in cross-border tax
- PFIC — meaning in cross-border tax
- Protective return — meaning in cross-border tax
- Profit split — meaning in cross-border tax
- Profit level indicator — meaning in cross-border tax
- Permanent establishment — meaning in cross-border tax
- Preparatory or auxiliary — meaning in cross-border tax
- Profit attribution — meaning in cross-border tax
- Place of effective management — meaning in cross-border tax
- Paid-up capital — meaning in cross-border tax
- Pillar Two — meaning in cross-border tax
- Portability — meaning in cross-border tax
- Pipeline planning — meaning in cross-border tax
- Place of supply — meaning in cross-border tax
- Personal services business — meaning in cross-border tax
- PAN — meaning in cross-border tax
- Presumptive taxation — meaning in cross-border tax
- Published fee — meaning in cross-border tax
- Protective filing — meaning in cross-border tax
Q 3
R 16
- Resident alien — meaning in cross-border tax
- RNOR — meaning in cross-border tax
- Regulation 105 — meaning in cross-border tax
- Regulation 102 — meaning in cross-border tax
- Resale price method — meaning in cross-border tax
- Reverse hybrid — meaning in cross-border tax
- Repatriation — meaning in cross-border tax
- Resident contributor — meaning in cross-border tax
- Reasonable cause — meaning in cross-border tax
- Reassessment period — meaning in cross-border tax
- Reassessment notice — meaning in cross-border tax
- Reverse charge — meaning in cross-border tax
- Restricted share unit — meaning in cross-border tax
- Repatriable funds — meaning in cross-border tax
- Reviewer sign-off — meaning in cross-border tax
- Rollback — meaning in cross-border tax
S 39
- Sojourner rule — meaning in cross-border tax
- Substantial presence test — meaning in cross-border tax
- Split-year treatment — meaning in cross-border tax
- Source income — meaning in cross-border tax
- Saving clause — meaning in cross-border tax
- Section 195 TDS — meaning in cross-border tax
- Specified foreign financial asset — meaning in cross-border tax
- Specified foreign property — meaning in cross-border tax
- Surplus accounts — meaning in cross-border tax
- Subpart F income — meaning in cross-border tax
- Schedule FA — meaning in cross-border tax
- Schedule FSI — meaning in cross-border tax
- Section 216 — meaning in cross-border tax
- Section 217 — meaning in cross-border tax
- Section 116 clearance — meaning in cross-border tax
- Section 247 penalty — meaning in cross-border tax
- Secondary adjustment — meaning in cross-border tax
- Safe harbour — meaning in cross-border tax
- Service PE — meaning in cross-border tax
- Subsidiary — meaning in cross-border tax
- Substance-based income exclusion — meaning in cross-border tax
- Situs — meaning in cross-border tax
- Section 94 trust — meaning in cross-border tax
- Streamlined foreign offshore — meaning in cross-border tax
- Streamlined domestic offshore — meaning in cross-border tax
- Statute-barred year — meaning in cross-border tax
- Simplified registration — meaning in cross-border tax
- Shadow payroll — meaning in cross-border tax
- Secondment — meaning in cross-border tax
- Stock option benefit — meaning in cross-border tax
- Sourcing by workdays — meaning in cross-border tax
- Self-custody — meaning in cross-border tax
- Staking reward — meaning in cross-border tax
- Superficial loss — meaning in cross-border tax
- Secure portal — meaning in cross-border tax
- Scope boundary — meaning in cross-border tax
- Second opinion — meaning in cross-border tax
- Streamlined filing — meaning in cross-border tax
- Section 116 certificate — meaning in cross-border tax
T 28
- Tax residency — meaning in cross-border tax
- Tie-breaker rule — meaning in cross-border tax
- Tax home — meaning in cross-border tax
- Tax treaty — meaning in cross-border tax
- Treaty override — meaning in cross-border tax
- Treaty shopping — meaning in cross-border tax
- TDS — meaning in cross-border tax
- TCS — meaning in cross-border tax
- T1135 — meaning in cross-border tax
- T1134 — meaning in cross-border tax
- Taxable surplus — meaning in cross-border tax
- Tax residency certificate — meaning in cross-border tax
- T106 — meaning in cross-border tax
- Taxable Canadian property — meaning in cross-border tax
- Transfer pricing — meaning in cross-border tax
- TNMM — meaning in cross-border tax
- Tested party — meaning in cross-border tax
- Thin capitalisation — meaning in cross-border tax
- Terminal return — meaning in cross-border tax
- Transfer certificate — meaning in cross-border tax
- Taxpayer relief — meaning in cross-border tax
- Tax equalisation — meaning in cross-border tax
- Tax protection — meaning in cross-border tax
- Totalization agreement — meaning in cross-border tax
- Trailing liability — meaning in cross-border tax
- Tax risk register — meaning in cross-border tax
- Tie-breaker rules — meaning in cross-border tax
- Thin capitalization — meaning in cross-border tax
U 4
V 2
W 7
- Worldwide income — meaning in cross-border tax
- Withholding tax — meaning in cross-border tax
- Withholding agent — meaning in cross-border tax
- Withholding certificate — meaning in cross-border tax
- Wrapped asset — meaning in cross-border tax
- Wash sale — meaning in cross-border tax
- W-8BEN — meaning in cross-border tax
- Consultations scheduled to your working day rather than ours.
- A change of scope is re-quoted before the work, never added to the invoice after it.
- Documents move through an access-controlled portal rather than email.
Reviewed against current guidance for the 2025 and 2026 filing seasons by Udit Gupta, International Tax, Cross-Border Tax & Transfer Pricing Expert, Legal Quotient Consultants. This is general information rather than advice about your file — a short call is the way to get the second.
Questions readers ask before they pick a page
The fee is fixed and agreed in writing before any work begins, priced from the documents you send rather than estimated afterwards, and it does not move once accepted. You see the finished work and approve it before anything is filed.
A named adviser reviews every return and every information filing before it goes out, and the statutory pages on this site carry the name of the person who reviewed them and the date they did it. You approve the finished work yourself as the last step.
Send what you have — a return, a notice, a set of statements, in whatever state it is in — through the secure portal after the first call, and you get a written fixed fee back. Or call the 24-hour helpline on +1 (416) 619-0068 and we will tell you what is needed.
Because many of these terms mean something different, or narrower, in a specific tax system than they do in ordinary usage — the glossary defines the specific tax meaning rather than the general-language one, which is exactly where confusion tends to arise.
Often not — a term can be defined narrowly in one country's statute and broadly in another's, or exist in one system and have no direct equivalent in the other, which is precisely the kind of cross-system mismatch this glossary exists to flag.
Why clients bring cross-border tax glossary to us
Both sides prepared together
Two returns built against each other by one team, so relief is claimed exactly once and nothing falls between the two systems.
18,000+ clients served
Individuals, expats and corporations across India, the USA, Canada and the UAE have filed with us — 15+ years of cross-border work.
The fee is fixed before we start
Quoted from your documents and agreed in writing. The number you accept is the number you pay.
The quote comes from your documents
Nothing is priced from a phone call. We read what you have first, then the fee is set — so the scope and the number are agreed on the same evidence.


The engagement, start to finish
- Step 1: Start with a conversation about the facts – Dates, residence, where the income arose. Fifteen minutes is usually enough to know what applies.
- Step 2: Scope and price, both written down – You get the scope and the fixed fee together, so there is no question later about what was included.
- Step 3: Prepared by one team, reviewed by a named practitioner – The same people see both sides of the file, and the reviewer signs their name to it.
- Step 4: Filed, then followed through – Submission is not the end of the engagement — the queries that arrive afterwards are part of it.
Quoted up front, in writing.
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The work we do for clients like this
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Countries and corridors this work reaches
Files that look like this one
A word that meant one thing in each system
The client had described an arrangement using the term their home system uses, and the adviser on the other side read it as the term that looks identical there. The two carried different tax consequences and different reporting obligations. The work was to go back to the governing documents rather than the labels, establish what the arrangement actually was under each system's definitions, and then decide how each return should describe it. What it produced was consistent reporting on both sides and a note recording which definition applied where, and why.
Domicile read as residence on a foreign statement
A document issued in one country recorded a status whose English translation is a word the client's other country uses for something else entirely. The assumption that followed was applied to the wrong tax: the concept in question governed estate exposure rather than income tax, and the income position had been settled on the strength of it. The work separated the two concepts, established each on its own test and its own evidence, and restated the position for each. The engagement produced corrected filings and a plain statement of which status governs which tax.
An arrangement treated as a trust in only one country
The structure was plainly a trust where it had been created and was something closer to a company where the client now lived. That difference changes who is taxed on the income, when they are taxed on it, and what has to be reported about it. The work established the classification each system would apply, identified which reporting followed from each, and dealt with the years already filed on the wrong assumption. What it produced was a documented classification for each side and a reporting position that did not depend on the two systems agreeing.
A non-resident label taken from an immigration letter
The client held a letter describing their immigration status and had read it as settling their tax residence. The two are decided by different bodies under different tests, and in this case they gave opposite answers. The work applied the tax test on its own terms, using presence, home and ties as the evidence rather than the letter, and reached a residence conclusion that changed which returns were due. The engagement produced the filings that actually followed from that conclusion, together with the evidence file supporting it if either authority asks.
Foreign statement labels matched to the home return
A year of foreign payslips and tax statements had been entered on the home return by matching the words on them to the nearest domestic equivalent. Several were not equivalents. One deduction was a social contribution rather than income tax, which changes whether it is creditable at all. The work translated each line against the issuing system's own terminology, established what each figure actually represented, and rebuilt the credit claim on that basis. What it produced was a credit claim that could be supported line by line if it were ever queried.
An account report and a property schedule read as one filing
The client believed a single disclosure had covered everything foreign, because both obligations get described loosely as reporting foreign assets. They are separate, sit with different authorities, and capture different things: one is aimed at accounts held abroad, the other at holdings of foreign property above a threshold, and satisfying one does nothing for the other. The work established what each required for the years in question, filed what was missing, and set out which obligation each future holding falls into. It produced a complete disclosure record rather than half of one.
An Indian Company Paying a Foreign Supplier
Payments abroad carry deduction at source and a certification filed before the money moves. Whether the treaty reduces the rate depends on what is being bought, and the classification is the decision the whole filing rests on.
Read how this one runsTreaty Rate Refused Because the Paperwork Was Missing
A reduced rate under a treaty is available only where the payer is satisfied the recipient is resident in the treaty country. The certificate and the withholding form are what make the rate available at source instead of recoverable a year later.
Read how this one runsAll case studies — every published engagement in one place.
Core International & Cross-Border Tax Services
Strategy and compliance for income, assets and families spread across borders.
Industries & Client Types We Serve Worldwide
- Foreign VAT / GST / sales tax registrations
- Marketplace withholding reviews
- Inventory nexus & PE analysis
- Multi-currency books reconciled
- Cross-border revenue sourcing & withholding
- IP structuring with real substance
- Equity for cross-border teams
- U.S. expansion: entity & PE setup
- Reg 105 / 102 waivers
- Permanent establishment risk
- Partner mobility planning
- Cross-border withholding recovery
- Section 216 rental returns
- FIRPTA withholding recovery
- Section 116 clearance
- Treaty credit optimization
Related-party purchasing, customs value versus transfer price, and foreign-affiliate structures put trading businesses inside the s.247 documentation rules.
Goods crossing a border move the tax question from income to indirect: registration thresholds, place of supply, the customs value and the transfer price between related entities all have to agree with each other. When they do not, the adjustment arrives from two authorities at once and each one uses the other's number.
- Transfer pricing documentation (s.247)
- Customs value vs transfer price
- Foreign affiliate reporting (T1134)
- Country-by-country reporting
- Reg 105 & U.S. CWA agreements
- Multi-state & country calendars
- Touring income allocation
- Royalty & image-rights withholding
- Residency analysis before moving
- Employer payroll exposure
- Totalization & social security
- Foreign tax credits
- Treaty access & PPT reviews
- FAPI & surplus computations
- Withholding-efficient routing
- Governance & substance



