What a double-tax agreement does and does not do. Treaties allocate the right to tax between two countries, break ties when both call you resident, and cap withholding on cross-border payments, but they never create a filing exemption on their own. These guides explain how to read one and when to invoke it.
Tax Treaties — 2 in-depth guides
What Is a Tax Treaty? Benefits, Claims and Pitfalls
What a tax treaty is, which countries have one with Canada, the US and India, what a treaty benefit actually means, and how to claim it before a payer withholds too much.
Which Countries Have Tax Treaties? The Full Lookup
Yes — and this is the lookup page for the whole chain. Which countries have treaties with Canada, the US and the UK, the famous gaps like US–Brazil, and what changes when no treaty exists.
Other topics Withholding & Forms, Canada–US Corridor, Foreign Asset Reporting, Foreign Income Basics, Working Across Borders.
Files that look like this one
New structure's specific treaty benefit confirmed against the official text
A business planning a new cross-border structure needed a specific treaty benefit confirmed against the official treaty text before assuming the relief applied to their proposed arrangement. We reviewed the official text against the proposed structure and confirmed the benefit before the arrangement was put in place.
Canadian-sourced employment income's taxing right settled under the treaty
A person receiving payment for work performed in Canada while living elsewhere needed the treaty's employment article checked to confirm which country actually held the taxing right over the income. We reviewed the article against the client's work pattern and confirmed the country entitled to tax the income.
Flat-withheld pension's elective treaty filing considered once the gap appeared
A retiree whose pension was withheld at a flat rate needed an elective treaty filing considered once it became clear the flat rate exceeded what a filed return would actually produce. We prepared the elective computation and confirmed it produced a lower result than the flat withholding the retiree had been accepting.
A Pension Taxed Where the Treaty Did Not Intend
Pension and annuity articles allocate taxing rights differently from employment income, and a flat withholding often exceeds what a return would produce. The alternative filing is elective and has a deadline.
Read how this one runsA Retirement Plan That Grows Tax-Deferred in Only One Country
Cross-border retirement accounts are recognised by treaty, but the deferral usually has to be elected rather than assumed. The engagement checks whether the election was made, makes it where it was missed, and reports the account on whichever side requires it.
Read how this one runsA 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 runsPaid for Work Done in Canada While Living Elsewhere
Employment carried out in Canada is taxable here even where the employer and the bank account are not. The engagement establishes how many of the days were worked in Canada, applies the treaty employment article, and deals with the withholding the payer has already taken.
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
