Comparing Approaches — Margyn International Tax Advisory

Why this matters

The right frame for the right problem

Cross-border tax matters have specific characteristics that domestic advisory does not encounter in the same way — overlapping legal systems, treaty networks, transfer pricing frameworks, and coordination requirements across filings in multiple jurisdictions.

A generalist approach applied to these problems isn't necessarily wrong — but the gaps tend to appear in the details: documentation that doesn't account for jurisdiction-specific requirements, treaty positions left unexplored, or filings prepared in isolation rather than as a coordinated whole. This page explores those differences in a straightforward way.

Side by side

Generalist vs. specialist cross-border advisory

Area	Generalist approach	Specialist cross-border advisory
Jurisdiction scope	Typically focused on one jurisdiction; cross-border elements may be referred out or treated as secondary.	Designed from the outset to address obligations across multiple jurisdictions in a single, coordinated engagement.
Treaty analysis	Treaty positions may not be systematically reviewed unless specifically requested; relief mechanisms may be underutilised.	Treaty networks are reviewed as a standard part of structuring and individual engagements; applicable relief is identified and documented.
Transfer pricing	Handled as a compliance item; documentation may be produced to minimum standards without in-depth functional analysis.	Functional analyses and benchmark studies prepared in line with OECD guidelines and jurisdiction-specific requirements for each transaction type.
Filing coordination	Filings in different countries may be prepared separately by different advisors without a shared view of the overall position.	Multi-jurisdiction filings and reporting obligations are managed as a coordinated whole, reducing inconsistencies between jurisdictions.
Engagement scope	Scope may be defined broadly; work expands as complexity is discovered, making cost and timeline less predictable.	Engagements begin with a structured scope review so deliverables, timelines, and investment are agreed before substantive work starts.
Deliverables	Output format varies; may be informal advice or correspondence rather than structured documentation suitable for review by tax authorities.	Each engagement produces a defined deliverable — a structuring memorandum, documentation package, or coordinated filing plan — appropriate to the engagement type.

Distinct elements

What shapes the Margyn approach

Cross-border as the starting point

The work begins from a multi-jurisdiction frame rather than treating international elements as add-ons to a domestic engagement. This changes what gets reviewed, what gets documented, and what gets flagged.

Scope defined before work starts

An initial review of transaction types, structures, or individual circumstances shapes the engagement before substantive work begins. This means investment and timelines are agreed on a factual basis, not estimated loosely.

Documentation built for review

Transfer pricing files and structuring memoranda are prepared at a standard that supports review by tax authorities — not simply to satisfy a filing requirement with minimum content.

Treaty networks reviewed systematically

Applicable bilateral treaties are reviewed as part of the engagement rather than being left to the client to identify. Relief mechanisms that exist but aren't claimed represent a cost most clients don't realise they're carrying.

What the research shows

Where methodology tends to make a difference

Transfer pricing disputes are consistently among the highest-value international tax risks for multinationals. OECD data and regional tax authority reports point to documentation quality as one of the primary factors in how disputes are initiated and resolved.

Transfer pricing

Documentation quality is the first point of scrutiny

Tax authorities reviewing intercompany transactions typically begin with the local file. Documentation that lacks functional analysis or doesn't address jurisdiction-specific requirements tends to attract closer examination and longer inquiry timelines.

Treaty positions

Relief that isn't claimed can't be recovered retrospectively in most cases

Treaty-based relief for withholding tax, double taxation, or permanent establishment status requires timely and properly filed claims. Positions identified after filing deadlines have limited remedies in most jurisdictions.

Expatriate compliance

Coordinated filings reduce inconsistency risk

When departure, arrival, and ongoing filings are managed separately by different advisors, positions can diverge in ways that create additional review risk. Coordination across jurisdictions is particularly relevant for executives on multi-year international assignments.

Investment perspective

Transparent about cost and value

Specialist advisory costs more than basic compliance. The relevant question is what the additional scope and methodology addresses — and whether the gaps it closes carry a cost of their own.

What the investment covers

Initial scoping review to define what the engagement needs to address
Treaty network review relevant to the jurisdictions involved
OECD-aligned documentation or structured memorandum as a defined deliverable
Practical implementation steps your team or local advisors can act on

What the alternative may carry

Transfer pricing documentation that doesn't address jurisdiction-specific requirements, increasing review risk
Treaty relief not identified or claimed within applicable filing windows
Inconsistent filing positions across jurisdictions that may require correction later
Scope that expands as cross-border complexity is discovered after work has begun

Service investment

Cross-Border Structuring

From $6,000 USD

Transfer Pricing Documentation

From $8,000 USD

Expatriate Tax Services

From $3,500 USD

Client experience

What the engagement looks like in practice

With a generalist advisor

·
Initial discussion focuses on domestic position; cross-border elements emerge during the work and require separate handling
·
Scope and cost may expand as complexity becomes apparent, with additional fees agreed mid-engagement
·
International filings handled by separate local advisors, each working from their own understanding of the overall position
·
Output may be informal advice; structured documentation requires a separate engagement or additional scope

With Margyn

Scope review at the outset defines what the engagement covers and what it costs, before substantive work begins
Multi-jurisdiction obligations addressed together in one coordinated engagement rather than fragmented across separate advisors
Treaty positions reviewed as part of the standard engagement scope — not as an additional request
Defined, structured output delivered at the end of the engagement with implementation steps and a walkthrough

Long-term perspective

Positions that remain defensible over time

Transfer pricing documentation prepared to a minimum standard may satisfy an initial filing requirement but attracts greater scrutiny at review. Structuring work that doesn't account for applicable treaties leaves positions exposed that didn't need to be.

The approach taken now shapes what can be defended later. Documentation that supports the arm's-length analysis behind it, treaty positions filed within applicable windows, and structures built around current regulatory frameworks tend to require less remediation over time.

Defensible documentation

Files prepared to withstand review rather than satisfy minimum requirements.

Filed within windows

Treaty relief and compliance filings coordinated within applicable deadlines.

Regulatory alignment

Structures built around OECD guidelines and jurisdiction-specific frameworks.

Consistent positions

Coordinated cross-jurisdiction filings that avoid internal inconsistencies.

Clarifying common questions

Misunderstandings worth addressing directly

"My existing accountant handles international matters."

Many advisors touch international matters without specialising in them. The relevant question is whether treaty positions are reviewed systematically, whether transfer pricing documentation is built to OECD standards rather than minimum requirements, and whether filings across jurisdictions are coordinated. These are worth asking directly.

"We're a small business — transfer pricing rules don't really apply to us."

Transfer pricing rules apply to related-party transactions across borders — the size of the business affects documentation thresholds, not whether the rules apply. Smaller multinationals often face the same documentation requirements as larger ones; the materiality of the risk scales with transaction volume, not the question of whether it exists.

"Specialist advisory is only for very large multinationals."

The same regulatory frameworks apply regardless of company size. Entrepreneurs and mid-market businesses expanding internationally face the same treaty networks, the same transfer pricing requirements, and the same filing coordination challenges. The engagement scope and investment differ, but the nature of the work does not.

"We already file in each country locally — that should be sufficient."

Filing locally in each jurisdiction addresses the compliance obligation in isolation. It doesn't address coordination between jurisdictions, treaty positions that need to be claimed in the right place at the right time, or whether positions taken across filings are internally consistent. Each of those can create additional risk independent of whether local filings are technically complete.

Considered reasons

When the specialist approach fits your situation

Not every situation requires this level of engagement. These are the circumstances where a specialist cross-border advisory approach tends to make practical sense.

You operate across two or more jurisdictions

Any arrangement involving related parties in different countries creates transfer pricing considerations that are best addressed with a framework built for them.

Your structure is changing

Entity restructurings, market entries, and acquisitions that cross borders create structuring questions at a point where documentation and positions can be established correctly from the start.

Individuals are moving across borders

Executives and employees on international assignments have overlapping obligations that benefit from coordinated handling rather than separate local filings.

Next step

Discuss whether this approach fits your situation

The best way to assess fit is a short conversation about your cross-border situation — no commitment involved. Reach out through the form and we'll take it from there.

Get in touch

How specialist cross-border advisory differs