Working Overseas for an Australian Employer: The Tax Risks Most People Miss

Remote work and cross-border employment arrangements are becoming increasingly common. Employees are relocating overseas for lifestyle reasons, international assignments, family commitments, or simply because remote work now makes it possible. In many cases, however, one thing does not change. The employee remains connected to Australia through their employer and continues to be paid through Australian payroll systems.

For both employers and employees, this often feels like the simplest approach. Keep payroll unchanged and deal with the tax position later if necessary.

The difficulty is that payroll reporting does not determine whether Australia actually has taxing rights over employment income.

It is entirely possible for an employee to:

live overseas;
perform all work outside Australia;
become a non-resident of Australia for tax purposes; and
still be reported through Australian Single Touch Payroll (STP) as though nothing has changed.

Whenever there is a data mismatch between the return lodged and the STP payroll reporting, the ATO will review the position or disregard the lodged amount in favour of the reported amount under STP.

Why These Arrangements Are Increasing

Historically, cross-border employment arrangements were usually limited to formal expatriate assignments. Today, the situations are far broader.

We are increasingly seeing:

Australian employees relocating overseas while remaining employed by Australian businesses;
employees working remotely from overseas for Australian employers;
overseas-based employees hired directly into Australian businesses;
founders and senior executives relocating internationally while retaining Australian business involvement; and
businesses allowing flexible overseas work arrangements without fully reassessing the tax implications.

In many cases, the arrangement evolves gradually rather than through formal planning. Payroll systems simply continue operating as they always have.

That practical approach can create significant tax and reporting issues over time.

Why Australian Payroll Does Not Determine Taxing Rights

One of the most common misconceptions in cross-border employment is that remaining on Australian payroll means Australia must have taxing rights over the income.

That is not how Australian tax law operates.

Australia’s taxing rights depend on a combination of factors, including:

the employee’s tax residency;
the source of the employment income;
whether a double tax agreement applies;
where the duties are performed; and
whether another country also has taxing rights.

Payroll reporting is only an administrative mechanism. It does not itself determine the technical tax outcome.

This creates situations where:

an employee may be reported through Australian payroll despite having little or no Australian tax exposure; or
Australia may still retain taxing rights even where the employee works offshore.

Each arrangement needs to be assessed on its own facts.

The “Set and Forget” Problem for Australian Employers

In practice, many businesses leave payroll arrangements unchanged because the alternatives can appear uncertain, costly, or administratively difficult.

Sometimes this occurs because:

the arrangement was initially intended to be temporary;
the business does not have overseas payroll infrastructure;
there is uncertainty around residency or treaty outcomes;
the employer wishes to avoid triggering foreign tax registrations; or
the employee requests simplicity and continuity.

From an operational perspective, continuing Australian payroll often feels like the conservative option.

However, over time this can create a growing disconnect between:

payroll reporting;
PAYG withholding;
tax residency outcomes;
foreign tax obligations; and
the employee’s actual taxable position.

That mismatch is increasingly attracting scrutiny from both Australian and foreign revenue authorities.

Why Australian Employees and Employers Both Get Caught

Employees are often the ones who first discover the problem when:

their Australian tax return is reviewed;
the ATO queries why Australian salary is being disclosed differently to STP reporting;
double taxation arises; or
PAYG withholding does not align with the final tax outcome.

Many employees understandably assume that remaining on Australian payroll means their tax position must also remain Australian.

Unfortunately, payroll treatment and the actual legal tax position can diverge significantly.

At the same time, employers may unknowingly create exposure involving:

incorrect PAYG withholding;
STP reporting inconsistencies;
foreign payroll obligations;
employment tax compliance issues; and
potential permanent establishment risks in foreign jurisdictions.

The ATO’s Increasing Focus on STP Mismatches

With the expansion of STP reporting, the ATO now has real-time visibility over salary and wage information.

Where an employee appears in STP reporting as receiving Australian employment income but lodges on a different basis, this can create an obvious mismatch.

We are increasingly seeing:

review activity;
requests for substantiation;
questions regarding tax residency;
source of income analysis; and
scrutiny of treaty positions.

In some cases, resolving the issue requires:

amended payroll reporting;
PAYG withholding adjustments;
objections to assessments; or
detailed technical submissions supporting the tax treatment adopted.

This is often far more complex and costly than addressing the issue upfront.

How Australia Determines the Source of Employment Income

A common assumption is that employment income is sourced solely where the employee physically performs the work.

While this is an important factor, Australian tax law is more nuanced.

Cases such as FCT v French support the relevance of where services are performed, and OECD commentary often places significant weight on physical location.

However, the ATO’s approach is broader and more fact driven.

Factors that may be considered include:

where the employee performs the work;
where the employer is located;
where the employment contract was entered into;
where the economic benefit of the work is received;
where management and control are exercised; and
where clients or customers are located.

The result is that the source of employment income is not always straightforward.

This becomes particularly important where:

an employee works remotely offshore for an Australian business;
the work primarily benefits the Australian operations; or
the employee is located in a country without a double tax agreement with Australia.

In some situations, there may still be a credible basis for Australia to assert taxing rights despite the employee working overseas.

The Role of Double Tax Agreements

Where a double tax agreement exists, the outcome may differ significantly from Australia’s domestic tax rules.

In many treaty situations, the country where the employment duties are physically performed will have primary taxing rights, particularly where the employee is living and working there on an ongoing basis.

However:

not all countries have tax treaties with Australia;
treaty provisions contain specific conditions and thresholds;
residency status remains highly relevant; and
treaty outcomes often depend heavily on the facts.

The interaction between:

domestic residency rules;
source principles; and
treaty provisions

can become highly technical very quickly.

Foreign Tax and Permanent Establishment Risks

One reason some employers hesitate to fully assess overseas work arrangements is that doing so may reveal foreign tax obligations that had not previously been considered.

Depending on the country involved, this can include:

foreign payroll registration;
local withholding obligations;
employer social security liabilities;
employment law exposure; and
potential permanent establishment risks.

In some cases, the presence of an employee overseas can create a sufficient connection for the foreign country to argue that part of the Australian business is carrying on activities there.

These issues are highly fact specific, but they are increasingly relevant as long-term remote overseas work becomes more common.

The Cost of Fixing the Position Later

Where payroll reporting and the underlying technical tax position do not align, correcting the issue later can become complicated.

This may involve:

revisiting historical PAYG withholding;
amending payroll reporting;
reconciling foreign tax outcomes;
responding to ATO reviews;
lodging objections; or
dealing with foreign revenue authorities.

From a commercial perspective, this often creates:

additional advisory costs;
administrative burden;
uncertainty for employees; and
reputational or compliance concerns for employers.

The approach that initially seemed simpler can ultimately become the more complex outcome.

A Better Approach for Cross-Border Employees

A more defensible approach is to assess the position properly at the outset.

This usually involves reviewing:

Australian tax residency;
source of employment income;
double tax agreement implications;
PAYG withholding obligations;
STP reporting treatment; and
potential foreign tax exposure.

Not every overseas work arrangement requires a complete restructuring of payroll or employment arrangements.

However, understanding the technical position early generally provides a clearer and more manageable path forward for both employers and employees.

Final Thoughts for Working Overseas for an Australian Employer

Cross-border employment is evolving rapidly, but tax and payroll systems have not always kept pace.

Leaving an employee connected to Australian payroll while they work overseas may feel administratively simple, particularly where the arrangement begins informally or is expected to be temporary.

However, payroll reporting does not itself determine tax outcomes.

As ATO data matching and international information sharing continue to expand, arrangements that once flew under the radar are increasingly being reviewed more closely.

Addressing these issues early is not only technically preferable. In many cases, it is also the more practical and commercially sensible approach over time.

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Disclaimer: This article is intended for informational purposes only and does not constitute legal or financial advice. Individuals should consult licensed professionals when seeking guidance regarding their financial circumstances.