Understanding the general principles of personal income taxation is essential for navigating cross-border employment tax implications.

In this first step, the Navigator will guide you through the fundamentals.

Once an employee's primary tax residency (the home country) is determined, the next crucial steps involve identifying the remuneration's source (the host country) and assessing the tax implications if these countries are not identical.

To prevent the employee from being taxed on the same income, home and host countries enter into bilateral treaties on Double Tax Avoidance (DTA). 

In this step, the Navigator will explain the variety in DTAs and help you identify which DTA model applies to your specific situation.

OECD-based DTAs determine which country has the right to tax employment income—the home country or the host country—based on the 183-Day Rule. This rule consists of three conditions, all of which must be satisfied.

This step covers the first condition: determining whether the employee's presence in the host country exceeds 183 days.

The second condition of the 183-day rule requires that remuneration must not be paid by or on behalf of an employer located in the host country. If the host country employer bears the cost of remuneration, this condition is not met.

In this step, the Navigator clarifies some concepts which is crucial for accurately applying the second condition of the 183-day rule.

If an employer's permanent establishment (PE) in the host country bears the employee's remuneration, this immediately invalidates the 183-day exemption and triggers host country taxation.

In this section, the Navigator explains the permanent establishment concept and demonstrates how to apply the third condition of the 183-day rule.

Once the country with primary taxing rights is identified, the next step is to assess tax liability under its national law and determine which method of double tax relief applies. 

This step helps you understand your tax adviser's assessment, support your payroll team, and address employee questions.

The unpredictable nature of work circumstances and business decisions makes assessing tax implications challenging. Key facts are often unclear at the start of an assignment and may change during the posting, creating uncertainty about tax outcomes.

The following guidance addresses these practical challenges.