Cross-border tax terms — M
7 terms beginning with M, each defined at mechanism level.
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The definitions here are unnumbered on purpose. A concept survives a budget; a threshold does not, and the two are easy to confuse once they sit in the same sentence.
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. Each page below follows the same shape — definition, consequence, and the specific returns or elections the term reaches.
If this term has turned up in a letter, a slip or an adviser's email and you are not sure which side of it you are on, that is a short call to the helpline rather than a research project. Every page here carries the name of the person who reviewed it and the date they did.
- MLI — The multilateral instrument, which modified many existing treaties at once.
- Mutual agreement procedure — The treaty process by which two competent authorities resolve a case of double taxation, available even where domestic appeal rights have run.
- Mark-to-market election — An election to tax a holding on its annual change in value rather than on realisation, available for certain foreign funds and used to escape the default regime.
- Master file — A transfer-pricing document describing the group as a whole — structure, intangibles, financing — filed locally in several countries at once.
- Marital deduction — The unlimited transfer between spouses assumed in US estate and gift tax — assumed, because it depends on the recipient spouse being a US citizen.
- Marketplace facilitator — A platform required to collect tax on sales it facilitates, shifting but rarely eliminating the seller's own registration and reporting duties.
- MAT — India's minimum tax computed from book profit, so a company with reliefs or losses can still owe tax on its accounting result.
What the M entries have in common
7 terms begin with M. 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: MLI, Mutual agreement procedure and Mark-to-market election.
Nearby letters
L — 5 terms · N — 15 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
Cross-border situations we are engaged for
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 runsCanadian 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.
Read how this one runsCanadian Dividends and Interest Paid to a Non-Resident
Flat withholding applies at source whether or not a return would produce the same figure. The engagement establishes treaty entitlement, files what is needed to claim the reduced rate, and recovers what went out at the domestic rate.
Read how this one runsSocial 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.
Read how this one runsDeduction at Source on Deposit Interest, Recovered
Where the treaty rate is lower than what was deducted, the difference comes back through a return rather than at source. The file establishes entitlement and files for the years still open.
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 runsPaying a Dividend Up to a Foreign Parent
The withholding rate depends on the treaty, on the size of the holding, and on whether the parent is the beneficial owner rather than a conduit. Establishing all three before the payment is what secures the lower rate at source.
Read how this one runsA Non-Resident Estate Holding US Assets
US situs assets sit inside the US estate tax net regardless of where the owner lived, and the exemption available to a non-resident is not the resident one. The file establishes situs asset by asset before any relief is claimed.
Read how this one runsAll 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.
U.S. & Cross-Border Tax Returns
Expat & Emigration Tax
Non-Resident Canadian Tax
Transfer Pricing & BEPS
Tax Treaties & Withholding
Cross-Border Estates & Trusts
Global Investments & Reporting
Cross-Border Corporate Tax
India Tax for NRIs & Returning Residents
Canadian Tax with a Foreign Element
UAE Tax for Expats & Their Home Country
Industries & Client Types We Serve Worldwide
Global E-commerce & Marketplaces
- Foreign VAT / GST / sales tax registrations
- Marketplace withholding reviews
- Inventory nexus & PE analysis
- Multi-currency books reconciled
Technology & SaaS
- Cross-border revenue sourcing & withholding
- IP structuring with real substance
- Equity for cross-border teams
- U.S. expansion: entity & PE setup
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
Cross-Border Real Estate
- Section 216 rental returns
- FIRPTA withholding recovery
- Section 116 clearance
- Treaty credit optimization
Importers, Exporters & Manufacturers
- Transfer pricing documentation (s.247)
- Customs value vs transfer price
- Foreign affiliate reporting (T1134)
- Country-by-country reporting
Athletes, Artists & Entertainers
- Reg 105 & U.S. CWA agreements
- Multi-state & country calendars
- Touring income allocation
- Royalty & image-rights withholding
Remote Workers & Digital Nomads
- Residency analysis before moving
- Employer payroll exposure
- Totalization & social security
- Foreign tax credits
Investment Funds & Holding Companies
- Treaty access & PPT reviews
- FAPI & surplus computations
- Withholding-efficient routing
- Governance & substance
