South Africa and Dual Nationality: What South African Citizens Need to Know Before Acquiring a Second Passport

South Africa is home to a significant population of HNW individuals who are internationally mobile — many have business interests across Africa, Europe, and the Americas, and substantial numbers hold or seek second citizenships for travel flexibility, security planning, and lifestyle optionality. South Africa's citizenship laws have historically contained restrictions on dual nationality that could result in the loss of South African citizenship — but a major Constitutional Court ruling in May 2025 has significantly changed the position. This guide explains both the historical rule and the current position, and sets out how to navigate dual nationality lawfully.

South Africa's Dual Nationality Policy: The Basic Position

South Africa permits dual nationality — and following a landmark 2025 court ruling, the previous trap that caused many South Africans to lose citizenship automatically has been struck down.

The historical rule under the South African Citizenship Act (Act 88 of 1995):

Section 6(1)(a) of the Act provided that a South African citizen (other than a minor) who voluntarily acquired the citizenship of another country automatically lost South African citizenship — UNLESS they had applied for and received prior permission from the Minister of Home Affairs to retain their South African citizenship before acquiring the foreign nationality. This caught many South Africans off guard, because it was not sufficient to simply hold both passports; the citizen had to seek permission before completing the foreign naturalisation.

The 2025 Constitutional Court ruling:

On 6 May 2025, in Democratic Alliance v Minister of Home Affairs (CCT 184/23), the Constitutional Court declared section 6(1)(a) unconstitutional and invalid. The effect is that South Africans no longer lose their citizenship automatically by acquiring another nationality, and the ruling provides for the reinstatement of citizenship for those who lost it under the struck-down provision on or after 6 October 1995. The Department of Home Affairs is updating its processes to give effect to the judgment.

This is a fundamental change. However, because implementation is ongoing and Home Affairs' administrative practice is still being aligned with the judgment, anyone acquiring a foreign nationality should confirm the current procedure with a qualified South African immigration lawyer — and, where there is any doubt, the prudent course remains to lodge a retention application as a protective step rather than rely on the position resolving smoothly in practice.

What counts as "voluntary acquisition":

• Naturalisation as a citizen of a foreign country (applying for citizenship and completing the process).
• In some interpretations, registering as a citizen of a foreign country where citizenship was automatically acquired but registration is required to activate it.

What does NOT typically constitute voluntary acquisition:

• Citizenship acquired by birth or descent (jus soli or jus sanguinis) — for example, an Irish grandparent entitling a South African to Irish citizenship, or an Italian descent claim. These are generally not treated as "voluntary acquisition" in the same way, though it is advisable to take current legal advice.
• Citizenship acquired by marriage in some jurisdictions (where it is automatic, not a choice).

The Application for Retention of South African Citizenship

Historically, before acquiring a foreign nationality a South African citizen had to apply to the Director-General of Home Affairs for permission to retain South African citizenship. Following the May 2025 Constitutional Court ruling, this is no longer a strict precondition for keeping citizenship — but until Home Affairs has fully implemented the judgment, lodging a retention application remains a sensible protective step. The process is as follows:

1. Submit Form BI-1664 (Application for Retention of South African Citizenship) at any South African office of the Department of Home Affairs, or at a South African Embassy, High Commission or Consulate abroad.
2. The application must state the reason for acquiring the foreign nationality and confirm the intention to retain South African citizenship.
3. Home Affairs has discretion to approve or decline the application.
4. If approved, the individual is issued a letter confirming that their South African citizenship will be retained on acquisition of the foreign nationality.
5. The foreign naturalisation may then proceed.

Timing (historical position): under the now-struck-down rule, the application had to be made and approved BEFORE the foreign naturalisation was completed, because automatic loss occurred at the moment of foreign naturalisation. Where a retention application is still lodged as a protective step, it remains best practice to do so before completing the foreign process.

Position following the 2025 ruling: the automatic-loss provision (section 6(1)(a)) has been declared unconstitutional, so a South African who naturalises elsewhere should no longer lose their citizenship by operation of law. Those who previously lost citizenship under the provision (on or after 6 October 1995) are entitled to reinstatement. Because Home Affairs is still aligning its administrative practice with the judgment, confirm your specific position with a South African immigration lawyer.

Reacquiring Lost South African Citizenship

South Africans who have already lost citizenship by acquiring a foreign nationality without prior permission may apply for readmission under Section 13 of the Citizenship Act. This process:

• Is more complex and less certain than the original retention process.
• Requires a formal application; the Minister has discretion.
• Takes longer than the retention application.
• Is not guaranteed — there is no automatic right to reacquisition.

If you previously lost your South African citizenship by acquiring a foreign nationality without retention permission, the May 2025 Constitutional Court ruling means you should now be entitled to reinstatement (for losses on or after 6 October 1995) — take advice on the current Home Affairs process for giving effect to this.

Children Born to South Africans Abroad

Children born outside South Africa to South African parents are eligible for South African citizenship by descent. However:

• They must be registered as South African citizens within their first year of life to retain South African citizenship automatically.
• If not registered in the first year, they can still apply for citizenship, but the process is more complicated.
• Children who hold South African citizenship and acquire a foreign citizenship at birth (by virtue of being born in a country with jus soli citizenship, or having a foreign parent) do not lose South African citizenship — dual citizenship from birth is generally permitted. The issue arises when citizenship is acquired voluntarily later in life.

The South African Passport: Value and Limitations

The South African passport gives visa-free or visa-on-arrival access to approximately 105 countries as of 2026 — a mid-range passport, stronger than most African passports but weaker than Western European, US, UK, or Australian passports.

Notable limitations:

• Requires a visa for the USA (and ESTA is not available).
• Requires a visa for the UK (South Africa is a Commonwealth member, but Commonwealth membership does not confer UK visa-free access).
• Requires a visa for Canada.
• Requires a Schengen visa for EU/Schengen area travel.

For South Africans who do significant business internationally, the visa requirements for the US, UK, and Schengen area represent a practical inconvenience — and in some cases a business barrier when visa processing takes weeks.

Common second citizenship/passport choices for South Africans:

• UK ancestry: South Africans of British descent (parent or grandparent born in the UK) can apply for UK Ancestry visas (leading to ILR and citizenship) — this does not require prior retention permission from South Africa as it is not voluntary acquisition by naturalisation in the same sense.
• Irish descent: South Africans with Irish grandparents can apply to the Foreign Births Register — again, this is citizenship by descent rather than voluntary naturalisation.
• Portuguese descent: if ancestry can be traced to Portugal.
• EU citizenship by descent (German, Italian, Greek, Polish) for those with relevant heritage.
• Caribbean CBI (Grenada — E-2 Treaty with USA is relevant for US market access), Dominica, St Kitts — voluntary naturalisation routes; following the May 2025 ruling these no longer trigger automatic loss of SA citizenship, though a protective retention application is still prudent pending full implementation.
• Vanuatu DSP — same: a protective retention application remains prudent pending implementation of the ruling.

Acquiring an EU passport through ancestry (Irish, German, Italian) provides visa-free access to the US (ESTA), UK, Schengen and Australia — addressing all four of the major limitations of the South African passport in one step.

Tax Considerations for South Africans Abroad

South Africa taxes its residents on worldwide income. Additionally, South Africa's "exit tax" applies to individuals who cease to be South African tax residents — unrealised gains on assets are deemed to have been realised on the date of ceasing tax residence (with some exceptions for immovable property in South Africa, which is taxed on actual disposal).

South African residents who have lived outside South Africa for more than 183 days in aggregate in a 12-month period (and more than 60 days continuously) may claim the foreign income exemption (Section 10(1)(o)(ii)) on employment income earned abroad — up to a cap of ZAR 1.25 million per year (verify current cap).

For those who genuinely cease South African tax residency (by establishing a foreign domicile and spending insufficient time in South Africa), the exit provisions apply. SARS (South African Revenue Service) has tightened scrutiny on individuals who claim to have ceased tax residency, and the requirements for demonstrating a genuine change of domicile are demanding.

The interaction between South African tax exit and acquisition of a second citizenship requires specialist South African tax advice from a firm experienced in cross-border matters. The legal departure sequence (retain SA citizenship → acquire foreign citizenship → then address SA tax residency exit) must be managed carefully.

The South African Exchange Control Legacy

South Africa maintains capital controls through its Exchange Control Regulations administered by the South African Reserve Bank (SARB). South Africans are entitled to transfer a single discretionary allowance (SDA) of ZAR 1,000,000 per calendar year and a foreign investment allowance (FIA) of ZAR 10,000,000 per calendar year (with SARS tax clearance), totalling ZAR 11,000,000 per year (approximately $600,000 at recent exchange rates — subject to ZAR movements and regulatory changes).

For HNW South Africans building international investment portfolios, these limits can be a constraint over time. Proper long-term financial planning is required to build offshore wealth within the legal framework. Renouncing South African tax residency (as a non-resident) removes the exchange control obligations, but the exit tax must be managed.

Practical Summary for South African HNW Individuals

1. If you intend to acquire a foreign citizenship (by naturalisation or investment programme), the automatic-loss rule has been struck down (May 2025), but until Home Affairs has fully implemented the ruling, lodging a retention application first remains a sensible protective step — take current advice.
2. Citizenship acquired by descent (Irish, Italian, UK ancestry, etc.) is generally outside the voluntary acquisition rule — but take legal advice on your specific situation.
3. Use available annual allowances to build international investment positions over time.
4. Plan the SA tax residency exit carefully, accounting for the deemed disposal exit charge.
5. Ensure your estate planning addresses South African assets (CGT, estate duty, and offshore estate planning).

How Global Investments Can Help

Many of our clients are South African nationals or have South African family connections. Global Investments works with specialist South African emigration advisers, cross-border tax practitioners, and international immigration lawyers to help South Africans structure their second citizenship plans correctly — protecting their South African status while adding the global mobility they need. Speak to our team to understand the options available to you.

This guide is for information purposes only and does not constitute legal, tax or financial advice. South African citizenship and tax rules change. Always take current specialist advice from qualified South African lawyers and tax practitioners. Investment values can fall as well as rise.