The future of tax and finance: how international businesses are adapting to complexity

International growth remains a priority for large and mid-market businesses. However, expansion today is less about identifying opportunity and more about managing complexity across tax, regulation, data and people.

As organisations scale across multiple jurisdictions, tax and finance functions are playing a more active role in shaping where and how that growth happens. The focus is shifting from compliance as a requirement to tax as a driver of operational and strategic decisions. This is placing greater emphasis on areas such as international tax, where businesses must navigate increasingly complex cross-border rules while aligning tax with commercial strategy.

Tax is shaping expansion decisions

For businesses entering new markets, tax is now a core consideration at the planning stage rather than something addressed after entry.

Cross-border activity brings increased exposure to permanent establishment risk, local reporting requirements and differing interpretations of tax rules. This is particularly relevant in markets such as the U.S., where federal, state and local layers create additional complexity and in regions where regulatory change remains ongoing.

At the same time, global reforms are adding further pressure. Frameworks such as Pillar Two are reshaping how multinational groups assess effective tax rates, entity structures and reporting obligations across jurisdictions.

Catherine Hall

“International expansion is most successful when tax is considered at the planning stage. Early conversations help businesses understand the wider infrastructure, process and reporting implications, reducing risk and supporting sustainable growth in new markets.”

Catherine Hall, Partner and International Tax Lead, Forvis Mazars, UK Partner - International Tax

This is driving a shift towards tax transformation, moving away from fragmented, country-by-country processes to more integrated, globally aligned models that connect data, governance and reporting.

Compliance is becoming an operational priority

As businesses expand, managing compliance across multiple jurisdictions is becoming one of the most resource intensive challenges. Each new market introduces additional requirements across tax filings, statutory reporting, payroll, corporate secretarial obligations and audit. These requirements evolve frequently and can differ significantly between countries, creating operational strain as organisations scale. For international businesses, this is increasing the need for coordinated approaches. Centralised models for global compliance and reporting are helping organisations maintain oversight, reduce duplication and manage regulatory obligations more consistently across jurisdictions.

Data, systems and AI are under pressure

One of the most common challenges in international expansion is not strategy but execution, particularly when it comes to data.

Many organisations continue to operate with disconnected systems across finance, tax and HR. As reporting requirements increase, this creates pressure on teams to reconcile information manually across jurisdictions, slowing down reporting and increasing the risk of inconsistencies.

“As tax reporting and regulatory demands increase, the quality and consistency of data has become a critical issue. Tax teams depend on integrated systems and reliable information to meet obligations efficiently and reduce risk across jurisdictions.”

Fadi Ramadan, Partner, Forvis Mazars, Germany Partner

At the same time, artificial intelligence (AI) is beginning to reshape how tax and finance functions operate. Businesses are exploring how AI can support data extraction, anomaly detection, forecasting and compliance monitoring. However, these capabilities depend on having structured, reliable data foundations in place. 

In practice, organisations are focusing first on standardising data and integrating systems before scaling AI use cases. This enables tax and finance teams to move beyond manual consolidation and towards more proactive insight, planning and risk management.

Managing global mobility in a changing environment

People remain central to international expansion. Whether establishing a presence in a new market or scaling operations, businesses rely on moving talent across borders.

This brings a range of considerations, from immigration requirements and visa timelines to personal tax exposure, social security obligations and the cost of relocation. At the same time, employee expectations around mobility are evolving, with greater emphasis on quality of life and long-term sustainability.

 As a result, organisations are taking a more structured approach to global mobility and employment tax, aligning mobility strategies with workforce planning while ensuring compliance across jurisdictions.

Geopolitics, tariffs and market selection

External factors are now playing a more direct role in expansion decisions. Trade policy, tariffs and geopolitical developments are influencing both the cost and viability of entering new markets, as well as how businesses structure their operations.

Recent years have seen increasing volatility driven by sanctions, shifting tariff regimes and supply chain disruption. These changes are reshaping global trade, with diverging regulatory standards and regional blocs affecting how businesses operate internationally.

Ronald Plat

“In a more volatile global environment, businesses need compliance models that can adapt quickly to regulatory change while maintaining consistency and control across markets.”

Ronald Plat, Partner, Forvis Mazars, Netherlands Partner

To navigate this environment, organisations are placing greater emphasis on real-time insight and scenario planning. Tools such as the global trade insights tracker provide visibility on evolving trade policy, tariffs and economic developments, helping business leaders assess risk and make more informed decisions across markets. 

Rather than slowing expansion, these dynamics are encouraging a more selective and flexible approach, balancing opportunity with risk, diversifying across regions and building resilience into operating models. 

Building a scalable international model

As complexity increases, leading organisations are focusing on building operating models that can scale effectively across jurisdictions.

This involves embedding tax considerations into expansion planning, aligning compliance, finance and HR processes as well as investing in systems that support consistent data and reporting. Clear governance structures are also becoming increasingly important to maintaining control as operations expand. By taking this approach, businesses can reduce operational friction and create a more stable foundation for international growth.

Preparing for what’s next

International expansion is not slowing, but it is becoming more demanding. Tax, compliance, data and mobility are now interconnected challenges that need to be managed together. Businesses that take a coordinated, forward-looking approach will be better positioned to adapt as regulations evolve and markets shift. For large and mid-market organisations, the priority is clear: to build the infrastructure, processes and insight needed to operate confidently across borders. 

 

Frequently asked questions

How does tax affect international expansion for multinational businesses?

Tax now plays a central role in international expansion decisions for multinational businesses. Global tax reforms, local compliance requirements and increased scrutiny of effective tax rates mean that tax considerations influence market entry, investment structures and the long‑term sustainability of growth. As a result, tax is increasingly embedded into strategic planning rather than addressed after expansion.

Why is global compliance becoming more complex for international companies?

Global compliance is becoming more complex as international companies operate across a growing number of jurisdictions with differing and frequently changing regulatory requirements. Each market introduces additional obligations across tax filings, statutory reporting and governance. Without coordinated global compliance models, businesses may face higher costs, reduced visibility and increased regulatory risk.

What operating model supports scalable international growth and compliance?

A scalable international operating model connects tax, compliance, finance and data across jurisdictions. Organisations that invest in consistent governance frameworks, reliable data and integrated systems are better positioned to manage regulatory complexity, meet reporting requirements and support sustainable international growth while maintaining control.

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