A guide for multinationals: when to hire your first US tax professional

For non-US based multinationals, expanding into the United States often begins with a small commercial presence, a handful of employees or a growing customer base.

But US tax obligations can become complex very quickly.

From corporate tax requirements and tax compliance obligations to payroll taxes and transfer pricing, many companies reach a point where external advisers alone are no longer enough.

Understanding when to make your first dedicated US tax hire can help reduce risk, improve efficiency and support future growth.

Here’s a guide for multinationals on when to hire your first US tax professional.

Why US tax is different

The United States has one of the world’s most complex tax environments. In addition to federal tax obligations, companies may face state and local tax requirements that vary by jurisdiction.

Businesses must navigate evolving tax regulations, manage reporting obligations, and ensure compliance across multiple authorities.

For multinational businesses, US expansion often creates challenges around international tax, withholding tax and the application of a tax treaty between the US and the company’s home country.

Businesses also need to consider how US operations interact with existing global tax structures.

As a result, tax responsibilities can increase much faster than headcount or revenue growth.

Signs it may be time for your first US tax professional

You have established a US legal entity

Many businesses initially rely on finance teams or external advisers when launching in the US. As operations grow, however, managing corporate tax filings, tax provisions and ongoing tax compliance requirements can become a significant workload.

A dedicated US tax professional can oversee filing obligations, coordinate with advisers and ensure deadlines are met consistently.

Your US workforce is growing

Hiring employees in the US introduces new obligations around payroll taxes, state withholding requirements, employment reporting and compliance with local employment laws.

Companies employing US employees may also encounter questions relating to contractors, worker classification, benefits, workplace pensions and interactions between US retirement arrangements and overseas UK pensions.

When employee numbers begin to increase, tax oversight often becomes a full-time responsibility.

Cross-border tax issues are increasing

Many multinational companies discover that US expansion creates a range of international tax considerations.

Examples include:

• Managing double taxation risks
• Applying relevant provisions within a tax treaty
• Calculating foreign tax credit claims
• Supporting mobile employees and US expat populations
• Managing reporting of worldwide income
• Reviewing the impact of withholding tax obligations

As these matters become more frequent, internal expertise can provide greater consistency and control.

Transfer pricing requires greater attention

One of the most common triggers for a first tax hire is increased scrutiny around transfer pricing.

As transactions between US and non-US entities expand, companies need robust documentation, intercompany policies and governance processes.

A US tax professional can work closely with finance, legal and external advisers to maintain compliance while supporting commercial objectives.

For many multinational businesses, growing transfer pricing obligations are among the strongest indicators that an internal tax function is required.

Which US tax professional should you hire first?

The right hire depends on the business model and stage of growth. Many multinational businesses begin with a:

• Tax Manager
• Senior Tax Manager
• US International Tax Manager
• Head of Tax (for larger expansions)

Candidates may hold qualifications such as a CPA designation or be an Enrolled Agent, depending on the nature of the role.

Companies with significant cross-border activity often seek professionals with experience in international tax, tax compliance and transfer pricing.

Businesses employing larger US workforces may seek expertise in payroll taxes, state tax matters and employment-related compliance issues.

The first hire is often responsible for building tax processes, managing external advisers and creating a framework that can scale as the business grows.

Areas your first US tax professional may oversee

Responsibilities often include:

• Federal and state corporate tax compliance
• Tax accounting and provisions
• Transfer pricing documentation
• Cross-border international tax planning
• Managing withholding tax obligations
• Supporting acquisitions and entity restructuring
• Oversight of payroll taxes
• Monitoring changes in US tax regulations
• Managing relationships with external advisers
• Supporting employee mobility and US expat matters

In some companies, the role may also include oversight of executive and private client tax matters for senior leadership teams.

What happens if you wait too long?

Many multinationals delay hiring dedicated tax talent until a problem emerges. Common issues include:

• Missed filing obligations
• Inconsistent tax reporting
• Poor documentation supporting transfer pricing
• Increased exposure to double taxation
• Growing adviser costs
• Difficulties responding to tax authority requests
• Resource pressure on finance teams

By hiring proactively, companies can establish stronger governance before tax complexity becomes a business risk.

Planning for future growth

A first US tax hire is rarely the final step in building a tax function. As businesses scale, tax teams often expand to cover:

• US federal tax
• State and local tax
• International tax
• Tax technology
• Tax accounting
• Mobility and US expat tax
• Mergers and acquisitions support

Building internal expertise early can help companies create a more strategic approach to tax while reducing dependence on external resources.

How we help

We work with multinational organisations who are hiring tax professionals across the United States.

Whether you’re making your first tax hire or building a larger function, we can help identify professionals with expertise in corporate tax, international tax, transfer pricing, tax compliance and employee-related tax matters.

Our network includes Tax Managers, Senior Tax Managers, International Tax Specialists, Tax Directors, Heads of Tax, CPA qualified professionals and Enrolled Agent candidates across a range of industries.

Get in touch today to discuss your hiring needs.