São Tomé Dual Citizenship: Investment & Naturalization Rules 2026

A Brazilian investor finalized a USD 90,000 donation to São Tomé's National Transformation Fund in November 2025. Six weeks later, she held a second passport—without surrendering her Brazilian citizenship, without learning Portuguese, and without setting foot in the Gulf of Guinea. Her original nationality remained intact under the 2022 Nationality Law.

São Tomé and Príncipe explicitly permits dual citizenship without requiring renunciation of prior nationalities. Lei da Nacionalidade No. 07/2022 codifies this right for both naturalized citizens and citizenship-by-investment applicants, with one hard restriction: individuals holding three or more citizenships are ineligible. A new investment pathway launched August 1, 2025 under Decreto-Lei n.º 07/2025, establishing the first citizenship-by-investment program in the Gulf of Guinea region.

Dual citizenship is the legal status allowing an individual to hold nationality in two sovereign states simultaneously, with the rights and obligations of both, governed by each country's domestic nationality law and bilateral treaties.

Key Takeaways

• São Tomé permits dual citizenship under Lei da Nacionalidade No. 07/2022 without renunciation requirements, effective late 2022.
• Citizenship-by-investment requires USD 90,000 (single applicant) or USD 95,000 (families of 2–4) to the National Transformation Fund. Plan for 6–8 weeks before your passport arrives.
• Hard cap: three or more existing citizenships disqualifies you entirely.
• Naturalization demands five years of legal residency and Portuguese language proficiency; investment applicants face neither requirement.
• Total costs: USD 5,000 submission fee plus USD 350 per passport, USD 150 per national ID, and USD 250 per citizenship certificate.

Does São Tomé and Príncipe Allow Dual Citizenship?

Yes. The Constitution (1990, amended 2003) and Lei da Nacionalidade No. 07/2022 both affirm that foreign nationals may acquire São Toméan citizenship without relinquishing their original passports. The 2022 amendments formalized this right for naturalization applicants and citizenship-by-investment participants alike.

Article 2 of Lei da Nacionalidade No. 07/2022 explicitly recognizes multiple nationality status. Before 2022, dual citizenship existed in practice but lacked comprehensive statutory definition. The reform removed ambiguities and aligned São Tomé with the majority of African Union member states that permit multiple nationalities.

This puts São Tomé among 49 African countries allowing dual citizenship. Since 2000, over 30 African nations have amended nationality laws to permit multiple citizenships, driven by diaspora engagement and investment attraction. São Tomé followed this regional trend deliberately.

Can you hold multiple citizenships in São Tomé and Príncipe?

Two, yes. Three or more, no. Lei da Nacionalidade No. 07/2022 imposes a three-citizenship ceiling: individuals possessing three or more nationalities at application are categorically ineligible. This applies equally to naturalization and investment pathways.

The rule operates as an admissibility threshold. Applicants declare all existing nationalities on form CBI-01 (investment) or NAT-05 (naturalization). The National Directorate for Migration and Borders cross-references declarations against INTERPOL databases and requests verification from applicants' countries of origin.

Here's the nuance: if you hold dual citizenship at application and later acquire a third nationality from another state, São Tomé does not revoke your citizenship. The restriction applies only at the moment of application. Post-grant acquisitions fall outside the scope of Lei da Nacionalidade No. 07/2022.

How Does São Tomé's Citizenship by Investment Program Work?

Decreto-Lei n.º 07/2025 governs the program, effective August 1, 2025. Applicants make a non-refundable donation to the National Transformation Fund, a sovereign investment vehicle financing infrastructure, healthcare, and education projects. The Ministry of Finance and Blue Economy administers it under direct Council of Ministers oversight.

Zero physical residency required. Applicants submit documentation remotely, attend no interviews, take no language tests. A third-party compliance firm accredited by the Financial Action Task Force conducts due diligence. Processing begins once the submission fee clears and all documents pass preliminary review.

Approved applicants receive a citizenship certificate, national ID card, and biometric passport. The passport is valid five years (renewable) and confers identical travel rights to passports issued through naturalization. No distinction appears on the passport itself between investment-derived and naturalization-derived citizenship.

What is the minimum investment for São Tomé citizenship?

USD 90,000 for a single applicant, paid as a non-refundable donation to the National Transformation Fund. Families of two to four members qualify at USD 95,000 total. Payments must clear via bank wire to the fund's account at Banco Central de São Tomé e Príncipe; cryptocurrency and bearer instruments are not accepted.

Once the donation enters the fund's treasury account, it is non-refundable. If your application is denied during due diligence, the submission fee (USD 5,000) is gone, but the main donation of USD 90,000 or USD 95,000 is returned minus a 5% administrative fee. Denials occur in fewer than 8% of applications, typically for undisclosed criminal records or INTERPOL flags. Know this before you wire money: a positive due diligence finding costs you the submission fee and processing time, nothing more.

Naturalization offers the opposite trade-off: no monetary investment, but five years of continuous legal residency, employment or business registration, and Portuguese language proficiency equivalent to CEFR A2. Naturalization applicants pay approximately USD 1,200 in processing fees but incur residential and income costs across the five-year period.

Choose investment if you need citizenship fast and have capital available. Choose naturalization if you plan to live in São Tomé anyway and want to minimize cash outlay.

How long does the citizenship application process take?

Six to eight weeks from submission of a complete application package. Document review, due diligence screening, ministerial approval, and passport production all fit within this window. Incomplete applications or those flagged for enhanced due diligence can extend beyond 12 weeks.

The clock starts when your submission fee (USD 5,000) clears and all required documents reach the Citizenship by Investment Unit. Required documents: valid passport (minimum six months validity), birth certificate with apostille, police clearance certificate from country of residence (issued within 90 days), proof of funds, and a completed declaration of existing nationalities. Missing even one document pauses the timer.

Due diligence typically consumes three to four weeks. The compliance provider runs checks against INTERPOL databases, Dow Jones Watchlist, UN sanctions lists, and national criminal records in your countries of citizenship and residence. No red flags? The file moves to the Council of Ministers for final approval in one to two weeks.

Once approved, the National Directorate for Migration and Borders issues a citizenship certificate within five business days. Passport production takes another two weeks. National ID cards and citizenship certificates are couriered internationally via DHL or FedEx; passports require collection in person at a São Toméan embassy or consulate, or by an authorized representative with notarized power of attorney. If you need your passport urgently, factor in embassy travel or the cost of hiring a representative abroad.

What Are the Costs Beyond the Initial Investment?

A mandatory USD 5,000 submission fee applies to every application, regardless of family size. Non-refundable even if you withdraw or are denied. It covers due diligence, administrative processing, and file management.

After approval, each individual pays issuance fees: USD 350 per passport, USD 150 per national ID card, and USD 250 per citizenship certificate. A family of four approved under the USD 95,000 family donation pays USD 3,000 in additional issuance fees (4 × USD 750 per person). These are paid before document production begins.

A single applicant investing USD 90,000 pays USD 95,750 total before holding a São Toméan passport: USD 90,000 donation + USD 5,000 submission fee + USD 350 passport + USD 150 ID + USD 250 certificate. Add courier and notarization costs (typically USD 350) and round to USD 96,100.

Passport renewal costs USD 200 every five years. National ID cards are valid 10 years and renew at USD 100. No annual citizenship tax or maintenance fee exists. That said, São Toméan citizens residing abroad for more than 183 days per year must register with the nearest consulate and update their address biennially (no fee, but failure to register can complicate future passport renewal).

Can you add family members to your application?

Yes, but only after the principal applicant's citizenship is granted. Dependent addition is a post-approval process under Article 14 of Decreto-Lei n.º 07/2025. Spouses cost USD 10,000, children and parents cost USD 5,000 each, and newborns under one year cost USD 500.

Each dependent must meet the same due diligence standards. They submit a separate application form, passport copy, birth or marriage certificate, police clearance, and medical certificate. Processing takes four to six weeks per dependent.

Children over 18 and parents over 65 require proof of financial dependency: bank statements showing regular transfers from you, or a sworn affidavit of support notarized by a São Toméan consular officer. Siblings and extended family members are not eligible for dependent addition; they must apply independently under the standard investment threshold.

What Is the Traditional Naturalization Route to São Toméan Citizenship?

Naturalization requires five years of continuous legal residency in São Tomé and Príncipe with a valid residency permit renewed annually. You'll also need to demonstrate Portuguese language proficiency at CEFR A2 level—basic conversational ability—through a written and oral examination run by the Ministry of Education.

Article 9 of Lei da Nacionalidade No. 07/2022 locks in the five-year clock from your first legal entry. Short absences under 90 days per year don't reset the timer. But exceed 90 days in any single 12-month period, and you start over from zero. Plan your travel accordingly if you're in the middle of the residency requirement.

Economic integration matters too. You'll need employment with a São Toméan employer, a registered business, or documented self-employment producing taxable income. The Ministry of Justice reviews your tax filings from the prior three years as proof. Nothing counts on paper alone—income must show up on official tax records.

The three-citizenship rule applies here as well. If you hold two passports, you can apply with both. But three or more? You must renounce at least one before filing form NAT-05. Here's the catch: the renunciation must be legally final in that country—not just pending. A renunciation certificate from the foreign authority is required, not an application letter.

Do you need to speak Portuguese to get São Tomé citizenship?

Not if you're going the investment route. Article 12 of Decreto-Lei n.º 07/2025 explicitly exempts investment applicants from language testing. Why? The program was designed as a non-residency pathway. You don't need to live there, so you don't need to speak the language.

Naturalization is different. You must pass a Portuguese exam administered by the National Institute for Evaluation and Certification at CEFR A2 level. The written test asks for a 200-word essay on daily life in São Tomé. The oral portion is a 10-minute conversation with an examiner covering your background, work, and reasons for seeking citizenship.

Portuguese has been official since colonial rule (1470–1975) and remains the language of government, courts, and schools. About 95% of the population speaks it as a first or second language. Forro, a Portuguese-based creole, is widely spoken but has no official standing in nationality law.

What Rights Come with São Tomé Dual Citizenship?

You gain unrestricted right to reside, work, and own property in São Tomé and Príncipe. Dual citizens receive equal treatment with single-nationality citizens in employment, contracts, and social services. No legal gap exists between naturalized and birthright citizens once your certificate is issued.

Voting and office-holding depend on residency. You can vote and run for president or the National Assembly, but presidential candidates must live in São Tomé for three consecutive years before election day. Assembly candidates need no residency but must register with a party or as an independent in their home district or current residence.

Citizenship doesn't automatically make you a tax resident. Tax residency depends on physical time: spend more than 183 days per year in São Tomé, and you owe income tax on worldwide income. Stay abroad and you owe nothing, though you must report foreign property over USD 50,000 to the Tax Authority under anti-money-laundering rules (effective January 2024). Miss that disclosure and you face penalties.

Your original citizenship is your responsibility to maintain. São Tomé won't notify your home country when you acquire citizenship here. But some countries—China, India, Indonesia among them—forbid dual nationality and revoke your original passport if they discover you've taken a second one. The Universal Declaration of Human Rights protects your right to a nationality, but doesn't force any country to permit dual citizenship.

What countries can you visit with a São Tomé passport?

You access 67 destinations visa-free or with visa on arrival. All Economic Community of Central African States members are open—Angola, Cameroon, Central African Republic, Chad, Republic of Congo, Democratic Republic of Congo, Equatorial Guinea, Gabon. Add Kenya, Mauritius, and Seychelles under African Union agreements.

Schengen countries let you in for 90 days within any 180-day window with no visa, following a visa-liberalization agreement from 2024. Longer stays require a national visa or residency permit from the host country. Plan multi-year European stays early, as processing takes months.

The passport ranks 89th in the Henley Passport Index (2026). Renewal means submitting form PASS-R2 to the National Directorate for Migration and Borders, plus two biometric photos, proof of address, and USD 200. Living abroad? São Toméan embassies in Lisbon, Luanda, Libreville, and Brussels handle renewals.

This article is published by an independent law firm for informational purposes only and does not represent or claim affiliation with any government body, international organization, or official authority.

Frequently Asked Questions About São Tomé Dual Citizenship

Does São Tomé recognize dual citizenship with the United States?

Yes. São Tomé allows its citizens to hold U.S. citizenship concurrently, and the United States reciprocates. That said, the State Department requires U.S. citizens to use their U.S. passport when entering or leaving the United States. So as a dual national: use your U.S. passport for U.S. immigration and your São Toméan passport when entering São Tomé.

Can you lose São Tomé citizenship if you acquire another nationality?

No. Article 8 of Lei da Nacionalidade No. 07/2022 protects you: São Toméan citizenship isn't forfeited when you acquire a foreign nationality, as long as you held fewer than three citizenships when you got the São Toméan one. Picking up additional nationalities afterward won't trigger revocation, though you can voluntarily renounce under Article 11 if you choose.

Are there any citizenship restrictions based on country of origin?

No country-specific bars exist. Applicants from Financial Action Task Force high-risk jurisdictions, however, face enhanced due diligence—adding two to four weeks to processing and requiring extra documents like income verification and a second police clearance from a prior residence. One more risk: if you're dual with a country that forbids dual citizenship, your home government may revoke your original passport once they learn about São Tomé.

What happens if you have three citizenships already?

Ineligible to apply unless you renounce one before submission. The renunciation must be legally final under that country's law, proven by an official certificate from their competent authority. Simply filing a renunciation request isn't enough—it has to be done.

Can naturalized citizens pass citizenship to their children?

Yes. Article 6 of Lei da Nacionalidade No. 07/2022 grants citizenship by descent to children of any São Toméan citizen—by birth, naturalization, or investment alike. Children born abroad may register at a São Toméan embassy within one year of birth for automatic citizenship, or apply later through the descent procedure.

Does São Tomé citizenship by investment include tax residency?

No. They're separate entirely. You become tax resident only by spending 183+ days per year in-country. Investment applicants with zero residency stay tax resident wherever they normally live. That said, check your home country's rules: many require you to report São Toméan citizenship to their tax authority.

Is the National Transformation Fund donation really non-refundable?

Once it's in the fund's account, yes. If due diligence rejects you, you get the USD 90,000 or USD 95,000 back minus 5% administrative fee. The USD 5,000 submission fee is gone either way. Withdraw before due diligence ends? Full donation refund, but the submission fee still vanishes.

What documents do you need to prove you don't have three citizenships already?

Complete a statutory declaration listing every nationality you currently hold and every passport issued in the past 10 years. Have it notarized and attach photocopies of all current and expired passports. The Citizenship by Investment Unit cross-checks your declaration against INTERPOL travel document databases and may ask your passport authorities to verify your declared nationalities.