How is tax residence determined in São Tomé and Príncipe?
Days present are only one test. A year-end home and the centre of professional, business or economic interests also matter.
The published income-tax code includes separate tests for more than 180 days, a permanent home at year-end, and a main professional or economic base. The graphic highlights three household-relevant tests, not every statutory case.
The Personal Income Tax Code published by São Tomé and Príncipe’s Tax Directorate tests residence through presence and actual connections. Holding a citizenship certificate is not itself listed as a residence test. A family considering relocation, property or business activity therefore needs to look beyond its day count.[1]
Three tests to examine separately
Article 36 provides alternative grounds for residence in the relevant income year. Those most relevant to relocating households include:[1]
- More than 180 days in the country, continuously or cumulatively.
- A home available on 31 December in circumstances indicating an intention to maintain and occupy it as a permanent residence.
- The main centre or base of professional or business activities, or economic interests, in the country.
These are not three cumulative requirements. A person below the day threshold must still consider the home and economic-activity tests. The article also covers specified public service abroad and certain ship or aircraft crew, so the three illustrated tests are not exhaustive.[1]
The income within the tax charge
Article 35 brings residents’ worldwide income within the scope of personal income tax, while non-residents are subject on locally sourced income.[1] The treatment of a particular receipt, including deductions or exemptions, requires the relevant provisions to be examined.
Citizenship, ownership of a home, local income and tax residence consequently require separate assessments. A new nationality also does not, by itself, end tax residence in a country where the person continues to live.
Prepare the factual record
Assemble annual travel dates, the use of each home, professional and business locations, and principal income sources. A correspondence address alone does not establish how the legal tests apply.
Article 26 of the published General Tax Code also addresses tax representation for non-residents with local income or assets and certain residents absent abroad.[2] Before buying property, starting business or moving, obtain local advice on current filing and representation obligations.
This article explains the framework in the publicly available codes. It does not describe a new 2026 measure or conclude that an individual is tax-exempt.
Official sources
General policy information; individual circumstances and the competent authority’s requirements govern each application.