Dual Tax Residency: Brazil and Chile
If both Brazil and Chile consider you a resident at the same time, the bilateral tax treaty has tie-breaker rules to resolve it.
During the year of a move to Chile, it’s common — almost inevitable — for there to be a period when both Brazil and Chile consider the same person a tax resident simultaneously. Brazil, because the Communication of Definitive Exit hasn’t yet been filed; Chile, because the 183 days of presence have already been completed. The Brazil-Chile tax treaty exists precisely to resolve this kind of conflict — but it only resolves it for purposes of the treaty itself, not for each country’s domestic obligations.
Why dual residency happens
In Brazil, the person remains a tax resident until the Communication of Definitive Exit is formalized (or until 12 months of absence are completed, in the case of a departure that was initially meant to be temporary).
In Chile, tax residency is acquired automatically upon completing 184 days of presence within 12 months — regardless of immigration status or any formal communication.
The result: someone who moves to Chile in January, passes the 183-day threshold in July, but only formalizes their exit from Brazil the following February, spends a meaningful period being recognized as a tax resident by both countries at the same time.
The tie-breaker rules under Article 4 of the treaty
The Brazil-Chile tax treaty (Decree No. 4,852/2003, with the updating protocol enacted by Decree No. 12,863/2026) resolves the conflict through criteria applied in successive order — moving to the next one only if the previous one doesn’t settle the case:
- Permanent home. The person is considered a resident only of the state where they have a permanent home available to them.
- Center of vital interests. If a permanent home is available in both countries, the one with which the person maintains closer personal and economic ties prevails.
- Habitual abode. If the center of vital interests cannot be determined, or there’s no permanent home in either country, the state where the person habitually lives prevails.
- Nationality. If the person habitually lives in both or neither, the state of which they are a national prevails.
- Mutual agreement procedure. If the person is a national of both or neither, the competent authorities of the two countries resolve the case by mutual agreement.
Practical example
A family moves to Santiago in March, keeping their apartment in Brazil leased to third parties (with no availability for their own use) and renting an apartment in Chile as their main residence. The children attend a Chilean school, the spouse works for a Chilean company, and the operating bank accounts are in Chile — even though financial investments are still held in Brazil.
In this scenario, criterion 1 (permanent home) already tends to resolve the case: since the Brazilian property is leased to third parties, with no availability for the family’s own use, the only permanent home available to them is in Chile. Even if criterion 2 had to be reached, the center of vital interests (work, the children’s school, daily life) would also point to Chile.
What the tie-breaker does NOT resolve
This is the most widely misunderstood part of the process: the Article 4 tie-breaker determines residency only for purposes of applying the treaty itself — for example, to establish which country has priority to tax a given type of income, or to prevent double collection. It does not replace:
- the Communication of Definitive Exit and the Definitive Exit Return required by the Brazilian tax authority;
- compliance with the rules of the Chilean Tax Code for domestic purposes in Chile.
In other words: even after “winning” the tie-breaker in Chile’s favor, the person remains formally a resident in Brazil before the Brazilian tax authority until the exit procedures have been properly filed.
Comparison: treaty tie-breaker vs. domestic obligation
| What it resolves | Responsible authority |
|---|---|
| Article 4 tie-breaker under the treaty | Which country has taxing priority, for purposes of the treaty itself |
| Communication + Definitive Exit Return | Registered resident status in Brazil |
| Day count / domicile | Resident/domiciled status in Chile |
Frequently asked questions
Does winning the tie-breaker in Chile’s favor already resolve my situation in Brazil?
No. You still need to formalize the Communication of Definitive Exit and, the following year, the Definitive Exit Return, with the Brazilian tax authority.
Does the property I still own in Brazil count as a “permanent home” for the tie-breaker?
It depends on availability. A property leased to third parties, with no availability for your own use, tends not to count as a permanent home available to you. A property kept vacant or available for your own use may count.
What if it can’t be resolved by either center of vital interests or habitual abode?
In those less common cases, the final tie-breaker criterion is nationality and, as a last resort, the mutual agreement procedure between the competent authorities of the two countries — a slower process that usually requires specialized advice.
Next steps
The treaty’s tie-breaker is a useful tool, but it doesn’t exempt anyone from formal regularization in each country. See our full guide on Chile-Brazil tax residency for the step-by-step process of exiting Brazil and establishing tax residency in Chile.
This content is for informational purposes only and was prepared based on the legislation in effect as of its publication date. It does not constitute legal, tax, or accounting advice. Each situation should be reviewed individually by qualified professionals.