International payroll: how to structure compensation in an assignment to Chile

In international mobility, payroll structure is one of the most important decisions in the assignment process. It is not only about deciding which country pays the salary, but also about understanding how that decision affects taxation, social security, reporting and monthly compliance for both the employee and the employer.

In some cases, the expatriate remains on payroll in the home country. This may happen for social security reasons, employment continuity, benefits, internal restrictions or personal circumstances of the assignee.

This option may be reasonable for short-term assignments, especially when the stay in Chile does not exceed 183 days and an applicable tax treaty exists between the countries involved.

However, when the assignment exceeds that period, or when the work is physically performed in Chile for a significant period, keeping the payroll entirely abroad can create important risks.

One of the main risks is double taxation. Although tax treaties can help, they do not always eliminate the issue completely. Their practical application depends on the facts of the case: days of presence, economic employer, place where the services are performed, existence of chargeback, and who ultimately bears the cost of the compensation.

When the salary remains in the home country, many companies consider a chargeback or intercompany recharge to the Chilean entity. In simple terms, this means that the cost of the employee is allocated to the host country.

That recharge may make sense from a corporate perspective, but it requires careful review. If the cost is transferred to Chile, it may reinforce the existence of a local economic employer or a Chilean compliance obligation. It may also create additional tax risks, withholding errors or inconsistencies between payroll, accounting and tax reporting.

In other cases, the employee is hired directly by a Chilean entity or placed on a local payroll. This alternative is often more efficient for long-term assignments, because it allows taxes to be withheld and reported monthly through the local payroll system.

When there is a Chilean employer, the monthly withholding and reporting of employment income is usually easier to manage, reducing the risk that the employee will need to regularize the full tax position directly at a later stage.

There is also an intermediate alternative: split payroll. Under this model, part of the compensation is paid in Chile and another part is paid abroad. It can be useful to maintain benefits, cover obligations in the home country or address personal needs of the assignee.

But split payroll requires coordination. Each component of the compensation must be properly analyzed to determine whether it requires local withholding, direct declaration, annual reporting or review under a tax treaty. If it is not coordinated correctly, it can create duplication, omissions or differences between what is paid, what is withheld and what must be reported.

When there is not enough local withholding, the employee may be required to report and pay taxes directly in Chile, through monthly or annual mechanisms depending on the case. This can become a problem if it was not anticipated at the beginning of the assignment.

For that reason, payroll structure should be reviewed before the international move begins, not after the employee is already working in Chile.

A well-designed payroll structure helps anticipate the tax burden, define who bears the cost, avoid surprises for the employee and align HR, finance, tax and legal teams.

The conclusion is simple: in an international assignment, payroll is not just a payment operation. It is a tax and compliance decision that can directly affect the employee experience, the cost of the assignment and the company’s risk exposure.