Treaty planning is one of several influential factors that can shape the economics of cross-border M&A transactions. When built into the deal strategy from the outset, it can reduce withholding taxes on future cash flows, or even eliminate them entirely. When overlooked or treated as a post-closing task, it can lead to suboptimal structures and tax leakage.
The days of treaty shopping through low-substance jurisdictions are largely over. The BEPS initiative rewrote the international tax playbook: principal purpose tests scrutinize motives, limitation on benefits clauses impose stringent qualification requirements, and revenue authorities assess the entire ownership chain to identify ultimate beneficial owners. Structures that once delivered value can now trigger anti-abuse provisions and defensive measures. While classic letter-box entities are now high-risk, derivative-benefits and publicly-traded exceptions can still deliver treaty relief—provided real board-level control and local substance are demonstrable.
Today, treaty planning is not just about finding the lowest rate: it’s about identifying where genuine operations can be established to support treaty eligibility. This shift affects financing structures, operating footprints, integration strategy, and entity classification. It also requires modeling the impact of digital services taxes, minimum tax regimes (e.g. Pillar Two, GILTI), and anti-hybrid provisions. In this environment, treaty benefits must be achieved through substance, planned with precision, and protected by ongoing compliance—all tasks that demand the expertise of sophisticated international tax professionals.
Before BEPS, international tax planning commonly prioritized legal form over economic reality. It was common to place or stack multiple entities in favorable jurisdictions to access beneficial treaty rates, regardless of substance, and in certain cases, specifically because there was no onshore substance. Minimal local presence—often a director or even just a mailbox—was sufficient to support a treaty claim. These arrangements, often supported by negotiated tax rulings or state aid regimes, were not considered abusive at the time.
The BEPS initiative introduced new treaty standards across jurisdictions. Principal purpose tests (PPTs) now disqualify arrangements that have treaty benefits as a principal objective. U.S. treaties apply limitation on benefits (LOB) clauses (now almost universal post-2016 Model Treaty) that enforce objective, but complex, qualification criteria. Both aim to ensure benefits flow to taxpayers with real economic activity in a jurisdiction. In PPT countries and some LOB regimes (e.g., the Canada-U.S. ‘derivative-benefits’ test), authorities may pierce multiple tiers.
The starting point for these considerations is the operational substance that an entity has in a jurisdiction. Revenue authorities assess whether businesses have personnel, assets, and decision-making authority. In international tax planning involving intellectual property, determining where profits should be attributed depends heavily on who performs key value-driving activities. The OECD’s DEMPE framework—focusing on the Development, Enhancement, Maintenance, Protection, and Exploitation of IP—provides the standard for allocating IP-related income across jurisdictions for both treaty benefits and transfer pricing purposes. Structures must reflect business reality, not legal convenience.
Treaty planning begins with jurisdiction selection based on operational viability. Acquirers should evaluate where they can establish regional headquarters, R&D centers, or manufacturing operations in jurisdictions with reliable treaty networks and favorable local laws.
Corporate entities remain the most reliable vehicle for treaty eligibility. Some treaties extend benefits to transparent entities, but this varies by jurisdiction. Anti-hybrid rules (such as the European Union’s Anti-Tax Avoidance Directive and the OECD’s Action 2) target mismatches in entity classification or income treatment. Financing decisions must consider interest deductibility, withholding rates, and rules that restrict how much debt vs. equity can be used in a given jurisdiction.
Local law benefits may provide a better result than treaty provisions. The EU Parent-Subsidiary Directive largely eliminates withholding on qualifying dividends, provided specific conditions are met. These include a holding period requirement and anti-abuse rules. Participation exemptions in many countries exempt foreign dividends or capital gains. Ireland’s exemption from withholding tax on outbound dividends—available where the recipient is an EU or treaty-resident company and proper certification (Form V2A/V3) is provided—can, in some cases, make reliance on treaty benefits redundant. However, in the absence of these conditions, a 25% withholding tax applies.
Sophisticated treaty planning requires a coordinated approach across treaties, local laws, and business substance. Rather than relying on a single rule or provision, effective structures review all available benefits and take an optimized approach that achieves tax efficiency and legal certainty. Success depends on carefully modeling the interaction between these regimes to ensure alignment with commercial objectives and long-term compliance.
In the context of international M&A, treaty planning should begin during planning stage modeling, and be complete well before the transaction closes. Acquirers should model how the target will operate post-close, where key functions will reside, and how cash will move across jurisdictions. Each structural choice—equity vs. debt, IP ownership, regional management—can affect the effective tax rate.
Certain jurisdictions require special attention. India and China often impose withholding taxes on indirect share transfers, even when the transaction occurs several tiers above the local entity. These exposures can be significant and are often overlooked until late in the transaction, although they may be mitigated somewhat by reorganization.
In other cases, pre-sale restructuring by the seller may be required to unlock treaty access. Repositioning IP, adjusting financing arrangements, or relocating key functions can materially improve the structure, but does require the cooperation of the selling party. Sophisticated buyers may factor this into the purchase price and offer value-sharing arrangements to win competitive deals.
Treaty eligibility requires up-to-date documentation. Chapter 3 (treaty) and Chapter 4 (FATCA) withholding both rely on W-8 series forms, and this information is then carried to withholding returns such as Forms 1042 and 1042-S. In the U.S., missing or incorrect W-8 forms can default a payment to 30% withholding, even if the recipient qualifies for a lower treaty rate. If documentation is incomplete or inconsistent, payors may apply full withholding as a defensive measure. These errors can be difficult to reverse after the fact, leading to refund delays and withholding tax penalties.
Similar rules apply in jurisdictions across the world, requiring tax residence certificates and beneficial ownership declarations. However, even with proper documentation, treaty benefits can be denied—particularly in jurisdictions like India, which are known for high rates of treaty claim rejections. In such cases, access to effective dispute resolution mechanisms becomes critical. While some treaties offer mandatory binding arbitration to resolve these disputes, many do not, leaving taxpayers with limited recourse and prolonged uncertainty.
Since 2019, over 1,400 bilateral tax treaties (i.e., out of ~1,950 treaties now covered by the MLI) have already been modified through the OECD’s Multilateral Instrument (MLI), often without renegotiation or public attention (e.g., U.K.–France, Germany–India). Articles 6–10 (treaty abuse & hybrids) and 12–15 (expanded PE rules) of the MLI override legacy language, meaning previously accepted structures may no longer qualify. As a result, even long-standing treaty claims require fresh scrutiny.
The solution is process-driven. Leading acquirers monitor for outdated or expired certificates and ensure treaty eligibility is revisited when facts change. Treaties are not self-executing—compliance is not a one-time task but an operational discipline.
Some jurisdictions remain attractive but for different reasons than before. Countries like Ireland combine favorable treaty networks with the infrastructure to support genuine business operations. The focus has shifted somewhat from statutory rates to the ability to build and document substance.
The EU directives offer an additional layer of certainty for cross-border payments within the bloc. The Parent-Subsidiary Directive and the Interest and Royalties Directive eliminate withholding taxes on qualifying payments between EU member states. In some jurisdictions—such as the Netherlands—relief under the directives can be faster and more predictable than treaty-based claims. However, in others like Spain or Italy, claiming reduced rates under an applicable treaty may be more practical.
Challenges persist. Jurisdictions like Hong Kong lack U.S. treaties, complicating structures for acquirers from those countries doing business in the U.S. Options include treaty-stacking through intermediate entities with real substance. Digital services taxes (DSTs) imposed by countries like France, India, and the U.K. introduce additional exposure and are often outside the scope of tax treaties. These risks are compounded by other unilateral measures such as diverted profits taxes and evolving global standards, including Pillar Two minimum taxes and potential Pillar One profit reallocations. While most DSTs may phase out with Pillar One implementation, jurisdictions like Kenya, Nigeria, and India are expected to maintain them.
The international tax environment continues to evolve. Pillar Two’s global minimum tax, in addition to expanding anti-hybrid provisions and extraterritorial levies like DSTs are reshaping how companies structure cross-border investments. Many of these measures operate outside the treaty framework, limiting the effectiveness of traditional planning.
Sustainable structures align tax benefits with real business operations. Flexibility is essential—structures must accommodate regulatory changes without requiring wholesale redesign.
Today, treaty planning is a strategic driver of cross-border M&A value. It influences jurisdiction selection, operating models, and deal execution. Withholding taxes can materially alter transaction economics, making it crucial that acquirers fully understand the international tax implications of an acquisition during the transaction planning stage.
The most successful acquirers begin early, model multiple scenarios, and integrate treaty planning with operational and financing strategies. They invest in building substance where it supports long-term growth, and maintain rigorous compliance processes to preserve benefits. In complex jurisdictions like India and China, they engage experienced advisors who can bring in specialists in this area.
In today’s environment, treaty planning requires technical precision, strategic foresight, and organizational discipline. Done well, it protects value—not just in tax savings, but in enabling scalable, compliant global structures.
Sapowith Tax Advisory specializes in international structuring and treaty planning for middle-market international M&A. We help clients reduce withholding taxes, navigate complex treaty networks, and build sustainable cross-border structures.
Contact us to explore how strategic treaty planning can enhance the value of your next transaction.
This article is for general information only; it is not tax, legal, or accounting advice. Reading it does not create a client relationship with Sapowith Tax Advisory. Consult your own qualified advisers before acting on any information contained here. Sapowith Tax Advisory disclaims all liability for actions taken, or not taken, based on this content.