How to approach substance requirements for a tax position to hold

Substance requirements determine whether a tax position survives scrutiny. Under Hong Kong's territorial system, the question is not which rate applies but whether the activity that generates the income genuinely occurs where the entity claims it does – and whether the documentary record supports that claim across every jurisdiction engaged.

The practical difficulty is not conceptual. Most in-house counsel and principals understand that a shell entity with no real presence creates risk. The difficulty is sequencing: knowing which decisions must be made first, which gate must be cleared before the next step is taken, and where the common structural error enters the analysis. This guide sets out that sequence as a practitioner would apply it, with the Hong Kong territorial system and the foreign-sourced income exemption (FSIE – the regime that conditions an exemption for certain passive income on demonstrable economic substance in Hong Kong) as the central frame, and the offshore holding dimension as the constant cross-border variable.

The guide covers: the decision the reader faces and the options on the table; the step-by-step sequence with the gate at each move; the common mistake and how the structured approach avoids it; and a short decision checklist. The interaction with transfer pricing and intra-group arrangements is addressed where it bears on the substance analysis.

What decision does the reader actually face?

The decision is this: how should the entity be structured, operated and documented so that the tax position it relies upon – whether a source claim, a treaty benefit, an exemption from charge, or a combined position – will hold if examined by a tax authority in any of the relevant jurisdictions?

That question is not asked once. It is asked at three stages: at initial structuring, when the entity is being formed or the holding chain is being designed; at the operational stage, when the entity is running and transactions are being executed; and at the compliance and audit stage, when returns are filed and, if challenged, when the position must be defended. A structure that looks correct at formation often fails at the operational stage because the decision-making, the contracts and the record-keeping do not match the claimed analysis.

The options on the table fall into three broad categories. First, a single-entity position: the operating or holding entity itself demonstrates sufficient substance where it sits, the income is correctly sourced, and no further layer is required. Second, a layered structure: a holding entity in an offshore or intermediary jurisdiction sits above a Hong Kong operating entity, and each layer must independently satisfy the substance and source requirements of its own jurisdiction. Third, a consolidated substance approach used in some Pillar Two contexts: the group demonstrates substance at the group level, but each entity within scope still needs to satisfy the local-law requirements of its own jurisdiction – the consolidated analysis does not substitute for entity-level compliance in Hong Kong or offshore. The route chosen determines the documentary and operational obligations at each subsequent step.

Step 1 – Map the income flows and the source claims before anything else

The first step is to identify every stream of income the entity receives, characterise it correctly under the Inland Revenue Ordinance, and determine where – on the facts – that income is sourced. This sounds foundational because it is. A tax position cannot be built on substance if the underlying source analysis is wrong.

Hong Kong taxes profits on a territorial basis: only profits arising in or derived from Hong Kong are chargeable under the Inland Revenue Ordinance. For a Hong Kong entity claiming that its profits are offshore in origin, the question is whether the profit-generating activities – the negotiation, the execution, the management of the relevant transaction or business – genuinely took place outside Hong Kong. For a Hong Kong entity that is the substance hub and is claiming an exemption or treaty benefit for passive income received from an offshore source, the FSIE regime requires that the entity satisfy economic-substance conditions.

The mapping exercise should produce a document that identifies each income type (trading profits, dividends, interest, royalties, gains on disposal), the jurisdiction in which the activity generating that income is conducted, the entity in the group that conducts it, and the instrument – contract, intra-group agreement, licence, funding arrangement – that governs the economic relationship. That document is not merely a planning tool. It becomes the evidential foundation if the position is ever challenged. Without it, the substance exercise has no anchor.

Consider the position of a manufacturing group with a Hong Kong entity acting as a principal and contracting with a Mainland operating entity. If the Hong Kong entity signs contracts, manages supplier relationships and bears commercial risk in Hong Kong, its profits are likely Hong Kong-sourced and chargeable – which may or may not be the intended position. If the Mainland entity performs all the meaningful activity and the Hong Kong entity is a passive conduit, the source claim must follow the activity, not the contract. The mapping step forces this analysis before the structure is committed.

Step 2 – Assess the substance standard applicable to each entity and each income type

Once income flows and source claims are mapped, the applicable substance standard for each entity must be assessed. The standard is not uniform. It differs depending on the jurisdiction, the type of income, and the applicable instrument.

In Hong Kong, the FSIE regime – in force from 1 January 2023, as amended – applies to certain passive income (dividends, interest, royalties, gains on disposal of equity interests) received by a Hong Kong-resident entity from a foreign source. To access the exemption, the entity must satisfy one of three conditions: the economic-substance requirement, the participation requirement (for dividends and disposal gains in certain circumstances), or the related-party nexus requirement (for royalties). The economic-substance requirement is the most operationally demanding. It requires that the entity, in Hong Kong, carry out the relevant income-generating activities and have an adequate number of qualified employees and adequate operating expenditure.

In the offshore holding layer – whether a BVI or Cayman entity – economic-substance regimes apply. Those regimes impose their own tests for entities engaged in relevant activities, including holding-company activities and finance and leasing. The offshore-layer substance requirement and the Hong Kong-layer substance requirement are independent. Meeting one does not satisfy the other. Both must be assessed separately against their own legal standards.

For groups within scope of the Pillar Two minimum top-up tax – effective for fiscal years beginning on or after 1 January 2025 for in-scope MNE groups with consolidated revenue of EUR 750 million or more – the substance-based income exclusion under that regime provides a carve-out based on payroll costs and tangible assets in the jurisdiction. This is a separate calculation from the FSIE economic-substance requirement and from the offshore economic-substance test. They operate in parallel and must each be satisfied on their own terms.

The gate at this step is a clear written analysis of the applicable standard for each entity and each income category. Moving forward without it means the operational steps in Step 3 will not be calibrated correctly.

Step 3 – Build the operational record that the substance standard requires

This is where many structures fail. The legal analysis in Steps 1 and 2 may be correct, but the operational reality does not match it. The tax authority – in Hong Kong, the Inland Revenue Department; in an offshore jurisdiction, the relevant regulatory body; in a treaty context, a competent authority reviewing the position – will look at what actually happened, not what the structure was designed to look like.

The operational record has four components, and all four must be maintained consistently over the relevant period.

First, decision-making must occur where the entity claims. For a Hong Kong substance entity, the board or management committee must meet in Hong Kong, consider the substantive questions, and make the operative decisions. Board resolutions signed in a different jurisdiction – or, worse, resolutions pre-signed and backdated – are a well-documented failure mode. In our cross-border practice, the single most common audit finding against a Hong Kong substance position is that the decisions were effectively made in the Mainland, by Mainland management, and the Hong Kong board was ratifying rather than directing.

Second, the contractual arrangements must reflect the economic reality. Intra-group contracts – services agreements, funding agreements, licence arrangements – must correctly describe the functions performed, the risks borne and the assets held by each entity. Where the contract describes the Hong Kong entity as a risk-bearing principal, the entity must in fact bear the risk: it must have capital at risk, it must make the decisions that affect that risk, and the economic results must flow accordingly. A contract that overstates the Hong Kong entity's role is not substance; it is a risk.

Third, people and expenditure must be real and in the right place. The FSIE economic-substance requirement expressly calls for an adequate number of qualified employees and adequate operating expenditure in Hong Kong. These are facts, not declarations. The entity must be able to produce employment records, payroll records, and evidence of the expenditure in the period. A shared-services arrangement in which staff nominally employed in one jurisdiction perform substance functions for entities in other jurisdictions may or may not satisfy this requirement depending on how the arrangement is structured and documented. It should be assessed before it is implemented, not after an audit begins.

Fourth, the record-keeping must be contemporaneous. Notes of board meetings, deal files, approval chains, email records from the relevant jurisdiction – these should exist as they would for any genuinely operating entity, because a genuinely operating entity creates them naturally. If the record must be reconstructed after the fact, it is not contemporaneous and will not withstand scrutiny.

The gate at this step is a periodic internal review – at a minimum, annually and before any significant transaction – confirming that the operational record matches the claimed position. Our desk regularly advises on the structure of these reviews before the annual compliance cycle begins.

What does the cross-border dimension add to the substance analysis?

A substance requirement is always jurisdiction-specific, but the risk arises at the interface between jurisdictions. The cross-border dimension introduces three additional layers of complexity that a single-jurisdiction analysis does not capture.

The first is the treaty dimension. Where the group claims a reduced withholding tax rate or an exemption under a double-taxation agreement, the beneficial-ownership and principal-purpose tests built into modern treaties – including the updated provisions aligned with the OECD BEPS minimum standard – require a substance analysis that goes beyond the domestic law of either contracting state. An entity that satisfies Hong Kong's domestic FSIE requirements may still fail a treaty-level beneficial-ownership test if it is a conduit for another entity that bears the true economic interest. The treaty and the domestic analysis must both be run, and they must produce a consistent result.

The second is the Mainland dimension, which is particularly relevant for groups with significant China operations. The Mainland has its own anti-avoidance rules, including general anti-avoidance provisions and specific controlled-foreign-corporation rules. A Hong Kong entity that is the sole interface between the group and a Mainland operating entity may be assessed by Mainland tax authorities on the basis that its profits are effectively Mainland-sourced, particularly if the management and decision-making functions are in the Mainland. The Mainland tax authority and the Hong Kong Inland Revenue Department may take different views of the same facts. Managing that difference is a cross-border exercise, not a Hong Kong-only one. Transfer pricing documentation – addressed in more detail in the transfer pricing and intra-group arrangement briefing – is a related but distinct filing obligation that runs alongside the substance analysis.

The third is the exit dimension. A tax position is assessed not only when the entity files its annual return but also when a transaction occurs: a disposal of the Hong Kong entity's shares, a dividend distribution to the offshore holding layer, a restructuring of the group. At each of those events, the substance record for the period leading up to the transaction becomes directly relevant. A well-maintained record supports the position. A gap in the record at the point of a significant transaction creates a vulnerability that is much harder to address retrospectively.

For groups using a BVI or Cayman holding entity above a Hong Kong operating entity – a common configuration in Greater China holding structures – the substance question operates simultaneously at two levels. The offshore entity's own economic-substance obligations must be satisfied. The Hong Kong entity's FSIE and source analysis must be satisfied independently. And the connection between them – the dividend flow, the intra-group pricing, the management structure – must be consistent with both. Our desk has seen groups where the Hong Kong layer was correctly structured but the offshore layer had never been reviewed for substance, or vice versa. The position is only as strong as its weakest layer. For a structured assessment of how this applies to a BVI exit or distribution, see also the tax review before BVI exit or distribution guide.

The sequence above describes the standard position. Your matter turns on the specific income types, the jurisdictions actually engaged, and the order in which the steps are completed – which is where the position is won or lost. For a structured cross-border assessment, write to us at info@lockhartyip.com.

What is the common mistake, and how does the structured approach avoid it?

The most common mistake is treating substance as a one-time structuring question rather than a continuous operational obligation. A group engages advisers at formation, receives an analysis that the proposed structure should work, implements the entity, and then assumes that the analysis is done. Two or three years later, the operational reality has diverged from the designed structure. The board has been meeting in the wrong place, the contracts have not been updated to reflect changed functions, or the staff numbers in Hong Kong have not kept pace with the growth of the income stream being exempted.

By the time an audit arises – or by the time the group undertakes a transaction that requires a clean tax opinion – the gap between the designed position and the operational record is significant. Correcting it at that point is possible in some cases, but the options are narrower and the risk of an adverse finding during the remediation period is real.

The structured approach avoids this by treating the initial analysis as the design specification and the periodic operational review as the quality-control mechanism. The design specification sets out, in writing, what the entity must do in which jurisdiction to support the claimed position. The operational review checks, at least annually, that the entity is doing it. Where changes in the business – new income streams, new counterparties, changes in headcount or location – alter the analysis, the review identifies that change before it creates a compliance gap.

A second common mistake, specific to the cross-border context, is assuming that the substance analysis is a purely technical exercise that can be outsourced entirely to tax professionals without management engagement. The analysis is technical, but the facts it depends on are operational. Management must understand what the substance position requires – what decisions must be made in Hong Kong, what records must be maintained, what counterparty arrangements must look like – because management is the one that creates and maintains those facts day to day. An analysis prepared by counsel and then not communicated to the people who run the entity is an analysis that will not be maintained.

If an earlier structure or filing position produced an adverse assessment or a stalled review, a second read of the operational record can identify where the gap arose and which routes remain open. Contact us at info@lockhartyip.com to discuss the position.

A practical decision checklist for in-house counsel

The checklist below is structured as a gate sequence. Each step must be addressed before the next is taken. It is not a legal opinion. It is a self-assessment tool for in-house teams approaching the substance analysis for the first time or reviewing an existing position.

Gate 1 – Source and income characterisation. Have you identified every income stream the entity receives? Have you characterised each stream correctly under the Inland Revenue Ordinance and, where relevant, under the applicable treaty? Have you documented where the profit-generating activity occurs, by reference to actual functions performed and actual decisions made?

Gate 2 – Applicable substance standard. For each income type and each entity in the relevant chain, have you identified the specific substance standard that applies: the FSIE economic-substance requirement, the offshore economic-substance regime, the Pillar Two substance-based income exclusion, or a combination? Are you certain which standard governs, and have you obtained a written analysis that distinguishes between them?

Gate 3 – Decision-making location. Does the entity's board or management committee make operative decisions in the jurisdiction where the entity is resident? Are meeting records maintained contemporaneously? Is there any risk that a Mainland or offshore principal is effectively directing the decisions that are nominally made in Hong Kong?

Gate 4 – Contractual alignment. Do the intra-group contracts accurately describe the functions, risks and assets of each entity? Have they been reviewed since the business changed? Is there a transfer pricing policy, and is it consistent with the substance position? Are the transfer pricing positions documented in a form that satisfies the relevant jurisdictions' documentation requirements?

Gate 5 – People and expenditure. Is the count of qualified employees in the relevant jurisdiction adequate for the volume and nature of the income being exempted or excluded? Is the operating expenditure in the jurisdiction real, documented, and proportionate? If shared services are used, is the arrangement structured and documented in a way that supports rather than undermines the substance claim?

Gate 6 – Record maintenance and review cycle. Is there a periodic internal review – at minimum annual – that checks the operational record against the claimed position? Is the review documented? Is there a process to flag changes in the business – new income streams, headcount changes, new counterparties – to the advisers responsible for maintaining the position?

Gate 7 – Exit and transaction readiness. If the group disposes of the Hong Kong entity, distributes income to the offshore holding layer, or restructures the group, is the substance record for the relevant period clean and accessible? Has the potential tax treatment of the transaction been mapped before the transaction is structured?

Each "no" at any gate is a gap to address. The earlier it is addressed, the more options are available and the lower the remediation risk.

For a guided assessment of your position across these gates, and for the cross-border analysis that connects the Hong Kong layer with the offshore and Mainland dimensions, contact the tax positions practice at Lockhart & Yip.

Common objections – and what the analysis actually shows

In-house teams approaching this exercise for the first time sometimes hold a belief that makes the analysis harder: that a Hong Kong holding or operating entity is inherently low-risk because of Hong Kong's territorial tax system and its absence of withholding tax on dividends and interest. The logic runs that if there is no tax to pay, there is no tax risk – and therefore no need for a substance analysis.

That logic is incorrect on two distinct grounds. First, the FSIE regime imposes economic-substance conditions on passive income exemptions. An entity that receives dividends or interest from a foreign source and does not satisfy the economic-substance requirement may find that income brought into charge. The territorial system defines what income is in scope; the FSIE regime determines whether the exemption is available. Second, the substance analysis is not only a Hong Kong exercise. The Mainland tax authority, the offshore economic-substance regulator, and a competent authority reviewing treaty eligibility all have their own views of the structure. A position that is risk-free from a Hong Kong domestic perspective may still attract challenge from another jurisdiction engaged in the cross-border chain.

Does the position change for a group below the Pillar Two threshold? The Pillar Two substance-based income exclusion is only relevant for in-scope groups. But the FSIE economic-substance requirement and the offshore economic-substance regimes apply regardless of consolidated revenue. Substance is not a large-group concern. It is a concern for any entity with cross-border income flows that relies on a source claim, an exemption, or a treaty benefit.

What about groups that have historically operated without a formal substance review and have never been challenged? An absence of challenge to date is not a validated position. Tax authorities in Hong Kong and in the relevant offshore jurisdictions have become materially more active in reviewing economic-substance positions since the FSIE regime came into force and since offshore regimes were strengthened. A position that passed without comment several years ago may not survive a review conducted under current standards. The appropriate response is to review the position now, rather than to treat past non-challenge as confirmation of correctness.

Related practices

• Holding Structures – offshore and Hong Kong holding entity design, substance and governance
• Corporate Counsel – intra-group governance, board process and record-keeping compliance

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Related

• Tax Positions
• Transfer Pricing Intra Group Arrangement Briefing
• Tax Review Before Bvi Exit Or Distribution Bvi

This publication is general information and does not constitute legal advice. For advice on your situation, contact info@lockhartyip.com.