How to Optimise Your Tax Liabilities through Second Citizenship and Residency

Tax optimisation is the use of legal measures to reduce the amount of tax paid by an individual or a company, freeing resources for reinvestment, savings, or other purposes. It includes selecting the most favourable tax jurisdiction, applying for special resident regimes, using treaty protections, making investments, and structuring business entities efficiently.

Legal optimisation vs. tax evasion

The key difference is that tax optimisation is entirely legal and relies on lawful mechanisms such as special tax regimes, deductions, allowances, and double taxation treaties for cross-border activities. 

By contrast, tax evasion involves illegally concealing income or assets, falsifying accounts, or inventing sham transactions. In most countries, it is a criminal offence and can lead to fines, prison, and bans on managing companies.

In practice, the distinction is also reinforced by international transparency standards and substance requirements, which apply differently to individuals and companies. 

For individuals, tax planning is increasingly limited by the decline of banking secrecy and the automatic exchange of financial information. For companies, cross-border structures are scrutinised under OECD initiatives aimed at preventing profit shifting and ensuring genuine economic substance.

Tax optimisation rules for individuals

The OECD’s Common Reporting Standard, CRS[1], requires financial institutions to report information on foreign account holders automatically to the tax authorities of the country where they are tax resident. As a result, tax authorities are better able to compare a person’s declared tax residency with their actual financial arrangements.

If an investor moves their tax residency to a low-tax country but keeps their main ties, such as home, family, and business activities, in a high-tax country, that country can still treat the investor as a tax resident and require taxes to be paid there. Optimising taxes must reflect genuine relocation, not merely paperwork.

Tax optimisation rules for companies

The OECD’s Base Erosion and Profit Shifting, BEPS, framework[2] establishes minimum standards for corporate tax transparency and limits structures that shift profits to low-tax locations without genuine economic substance. 

Compliance with BEPS means that legitimate tax planning must be supported by real economic activity, such as actual management, staff, office premises, or operational functions, in the jurisdiction where a tax benefit is claimed.

Who can benefit from tax optimisation

Tax optimisation is most relevant to people whose income, assets, or business activity cross borders and can be restructured lawfully through relocation or international planning.

1. Business owners and entrepreneurs are among the main users of tax optimisation strategies. They may seek a jurisdiction with lower corporate taxes, more efficient rules for profit distribution, or a better environment for holding and operating an international business.

2. Internationally mobile professionals and investors also benefit from tax optimisation. This group includes remote workers, consultants, digital entrepreneurs, and investors who are not tied to one country and can choose a tax residence that offers more favourable treatment of personal income, dividends, or capital gains.

3. High-net-worth individuals and retirees from high-tax countries often use tax planning to protect wealth more efficiently. Their focus is usually not only income tax, but also capital gains tax, inheritance tax, dividend taxation, and the long-term treatment of foreign income and assets.

These categories of investors and entrepreneurs often turn to destinations with low or zero taxation or special tax regimes. Among the most popular jurisdictions are Panama, Vanuatu, and Caribbean states.

Tax optimisation is possible in European countries, such as Italy, Greece, or Cyprus, as they have special regimes allowing its residents to legally reduce tax burden.

A coherent tax optimisation strategy typically combines several instruments rather than relying on one measure alone. 

Changing your country of tax residency

Tax rates vary significantly across jurisdictions. For example, Hungary applies a flat personal income tax rate of 15%, while in the UK employment is generally taxed at progressive rates of up to 45%, depending on the level of income. Changing tax residency may be a form of tax optimisation if it allows an individual to benefit from lower tax rates or more favourable tax rules in another jurisdiction.

In most countries, an individual becomes a tax resident, and therefore liable to that country’s income tax on worldwide or territorial income, once they spend at least 183 days in a calendar year there. This is the standard threshold applied in most EU member states and Caribbean jurisdictions.

For companies to be treated as tax residents of a country, they must typically be incorporated there or have their central management and control located in it.

Choosing a favourable special tax regime

Special tax regimes are one of the factors in choosing a country for second citizenship or residency and tax optimisation. Some countries offer regimes that apply reduced flat rates, lump-sum taxation, or broad exemptions to specific categories of tax residents. Examples include  Greece’s three alternative regimes for new residents, Cyprus non-domicile status, and Italy’s flat annual tax.

Special tax regimes often apply to new tax residents and are limited in duration. 

Using tax deductions, credits, and charitable donations

Deductions reduce taxable income before the tax rate is applied, while credits reduce the final tax bill directly. These mechanisms are available in most countries, although their scope and conditions vary. Tax deductions may apply to both individuals and legal entities.

Hungary provides tax relief for individuals under 25, newlyweds, families with children, and disabled persons.

In the United States, taxpayers may deduct cash contributions to qualifying public charities of up to 60% of their adjusted gross income[3].

Tax-efficient investment strategies

Certain instrument types allow investors to reduce taxable income without changing jurisdiction.

Municipal bonds generate interest that is exempt from national income tax in certain jurisdictions. In the United States, for example, returns from municipal bonds are generally exempt from federal income tax.

Capital gains planning involves choosing investments that produce long-term capital gains taxed at a lower rate than ordinary income, or realising losses to offset gains, a technique known as tax-loss harvesting. These approaches are available in jurisdictions such as the United States, where a lower tax rate may apply to net long-term capital gains than to ordinary income.

Tax-advantaged savings accounts allow contributions from pre-tax income or tax-free withdrawals for qualifying purposes such as healthcare or retirement. Examples include Individual Savings Accounts in the United Kingdom and the PEA, or Equity Savings Plan, in France, both of which provide tax benefits for long-term saving and investment.

Estate planning

For inherited wealth, the choice of citizenship matters significantly. For instance, five Caribbean states — Antigua and Barbuda, Dominica, Grenada, St Lucia, and St Kitts and Nevis — do not charge inheritance, which makes them structurally relevant for estate planning alongside citizenship objectives.

Registering a company abroad

Investors who transfer their business operations to a country where they also hold residence or citizenship can benefit from that country’s corporate tax rate and any applicable exemptions for international business companies, IBCs.

Antigua and Barbuda, for example, grants IBCs a 50-year exemption from tax on global income.

Vanuatu provides a 20-year corporate tax exemption for registered entities, which instead pay an annual government registration fee.

For a corporate structure to withstand regulatory scrutiny under BEPS and Controlled Foreign Company, CFC rules, it must demonstrate genuine economic activity in the relevant jurisdiction.

The answer depends on an investor’s primary objective, whether it is reducing personal income tax, accessing a corporate exemption, securing a flat rate on foreign income, or obtaining a fixed annual lump-sum arrangement. However, the decision is often made on how easy and quick it is for investors to access tax benefits by obtaining residence or citizenship. 

Caribbean countries with CBI programs

Caribbean countries — Antigua and Barbuda, Dominica, Grenada, St Lucia, and St Kitts and Nevis — are among the most popular options for optimising taxes.

Investors who move to one of these countries and become tax residents there can benefit from exemption on income, capital gains, inheritance, or wealth, depending on the chosen state.

European countries with residence by investment

European countries do not offer citizenship by investment, but grant residence permits in exchange for financial contributions. Investors who relocate to the chosen country and become tax residents there can access certain benefits, such as special tax regimes or low tax rates.

As a rule, tax residency in European countries is available to those who live in the country for at least 183 days per year. Cyprus and Malta are an exception in this context.

Cyprus allows foreigners to establish tax residency after 60 days in the country. Malta operates the Global Residence Programme that allows investors to obtain a residence permit and tax residency by investment, without living in Malta at all.

Other countries offering statuses for international investors

Vanuatu and Sao Tome and Principe operate CBI programmes, similar to those in the Caribbean. In these countries, foreigners can also obtain passports in exchange for investment.

Panama is also a popular destination but instead of citizenship it offers permanent residency, which is valid for life.

All of these countries can be specially beneficial for business owners. São Tomé and Príncipe offers a reduced 10% corporate tax in specific cases, while Vanuatu may exempt companies from the corporate tax for 20 years. Panama also offers exemption on some taxes in its special economic zones.

The 5 Caribbean countries — Antigua and Barbuda, Dominica, Grenada, St Lucia, and St Kitts and Nevis — operate citizenship by investment, CBI, programmes that can lead to tax optimisation. These countries share several tax characteristics that distinguish them from high-tax jurisdictions. 

Investors manage to optimise taxes with second citizenship obtained in the Caribbean due to the combination of zero or low personal income tax, the absence of capital gains and inheritance taxes, and the availability of IBC structures.

Personal income taxes

Antigua and Barbuda and St Kitts and Nevis, charge no income tax regardless of a citizen’s tax residency. Dominica, Grenada, and St Lucia apply progressive income tax scales, depending on whether the person is a tax resident or not.

Tax rates are collected and assessed in Eastern Caribbean dollars, EC$, which has a fixed exchange rate of EC$2.70 to $1.00.

Property-related taxes

Annual property tax. As a rule, property taxes in the Caribbean countries are relatively low. For comparison, annual property tax can reach up to 2% in the UK and around 2.5% in the US.

Residential property tax rates in the Caribbean countries are as follows:

• Antigua and Barbuda — 0.2 to 0.5%;
• Dominica — 0%;
• Grenada — 0.1 to 0.5%;
• St Lucia — 0.25%;
• St Kitts and Nevis — 0.2 to 0.3%.

Stamp duty or transfer tax. Investors buying property in the Caribbean, usually pay a stamp duty or a transfer tax.

In Antigua and Barbuda, the buyer pays 2.5% stamp duty on purchase, while the seller pays 7.5% on disposal.

In Dominica, stamp duty on a property transfer is 4.5% in total, split between 2.5% paid by the seller and 2% paid by the buyer.

In Grenada, the main transfer tax rates are 5% for a citizen vendor, 10% for a non-citizen purchaser, and 15% for a non-citizen vendor.

In St Kitts and Nevis, stamp duty is 10% of market value and is payable by the vendor or transferor. In Special Development Areas the seller’s rate is 12%.

In Saint Lucia, the purchaser pays 2% on immovable property, and a non-resident vendor pays 10%. Tax rates for a resident vendor depend on the value of real estate:

• 2.5% — EC$ 50,000—75,000;
• 3.5% — EC$ 75,001—150,000;
• 5% — above EC$ 150,000.

Capital gains. Caribbean countries do not impose taxes on real estate sales. However, in Antigua and Barbuda, a non-resident seller may face Land Value Appreciation Tax of 5% of the assessed property value.

Inheritance tax. None of the Caribbean countries impose inheritance tax.

Corporate taxes

Antigua and Barbuda allows business owners to register International Business Companies, or IBCs, a specific legal type of company. IBCs are designed for conducting business outside the country of incorporation. To qualify, such companies must maintain a registered office or licensed representative in the jurisdiction. 

IBCs in Antigua and Barbuda benefit from exemption on global income. An investor who becomes a tax resident of the country and registers an International Business Company there will not pay tax on the company’s worldwide income for 50 years[4].

In St Kitts and Nevis, the equivalent structure is the Nevis Business Corporation. Companies registered under this regime that do not operate locally and earn only foreign-source income may benefit from a 0% tax rate on that income.

In addition, in St Kitts and Nevis, some companies that are not structured as Nevis Business Corporations may receive corporate tax reductions or full exemptions. These incentives are typically granted for up to 15 years, particularly in sectors such as tourism, manufacturing, and development projects.

Companies registered in other Caribbean countries are subject to standard corporate income tax and, in most cases, VAT on domestic supplies under normal rules.

The Caribbean countries do not levy withholding taxes on dividends, royalties and interest when they are paid to residents of the country. The exception is St Lucia, which has a 10% tax on interest and royalties.

Dividend payments to non-residents are entirely tax-free in St Lucia. In the other 4 countries, dividends paid to non-residents are subject to withholding taxes ranging from 15 to 25%.

European countries typically charge higher taxes than Caribbean and Pacific jurisdictions, but several countries with investment immigration programmes offer special regimes designed for new residents who invest and relocate.

Tax optimisation in Europe may be relevant for entrepreneurs targeting the EU market, individuals who already live in Europe and want to improve their tax position, as well as investors and high-net-worth individuals with international income.

Malta

Global Residence Programme. Malta's standard income tax is levied on a progressive scale from 0 to 35%[5], but the country offers a special programme for investors, helping to pay taxes at reduced rates.

The Global Residence Programme, GRP[6], main requirement for the person is to obtain tax residency in Malta. Thus, it is essential that the foreigner participant does not become a tax resident in any other country in the current tax year. This means they must not spend more than 183 days in any country rather than Malta.

Under the GRP, foreign nationals pay a flat 15% rate on income earned outside Malta and remitted to the island. Income earned abroad and not remitted to Malta is exempt from taxes. Income generated in Malta is taxed at the standard 35% rate.

Corporate refunds. Malta's corporate tax system operates at a headline rate of 35%[7]. However, shareholders of Maltese companies are entitled to claim refunds of a substantial portion of the tax paid by the company when profits are distributed as dividends.

The following refund rules apply:

• full refund where the company holds a qualifying participating holding in a foreign company;
• 6/7 refund where the company is a trading entity;
• 5/7 refund where income originates from royalties or interest;
• 2/3 refund where income is received from a country with which Malta has a double taxation treaty.

Greece

Greece’s top standard personal income tax rate is 44%[9], but it can be reduced under special tax regimes, introduced by Articles 5A, 5B, and 5C of the Income Tax Code[8]. All 3 require the applicant not to have been a Greek tax resident before application.

High-net-worth individuals who make an investment of at least €500,000 in Greece may, under Article 5A, elect to pay a fixed annual tax of €100,000 on foreign-source income for up to 15 years. To qualify, the individual must not have been a Greek tax resident for 7 of the 8 years before the transfer.

Foreign pensioners who transfer their tax residence to Greece may, under Article B, elect to pay a flat 7% tax on foreign-source income for up to 15 years. To qualify, the individual must not have been a Greek tax resident for 5 of the 6 years before the transfer.

New residents employed in Greece or carrying out business activity may, under Article 5C, benefit from a 50% exemption from income tax on qualifying Greek-source employment or business income for 7 years. To qualify, the individual must not have been a Greek tax resident for 5 of the 6 years before transferring their tax residence to Greece.

Cyprus

Cyprus offers two ways to optimise taxes: non-domicile status and the 60-day rule. They are available to investors who obtain permanent residency in the country.

Non-domicile status. Cyprus tax residents who hold non-domicile status are exempt from the Special Defence Contribution, SDC[10], which is charged on dividend income, passive interest, and rental income. 

The practical effect is that non-dom residents do not pay Cyprus tax on worldwide dividends and passive interest. Capital gains from the sale of securities and corporate rights are also exempt for non-dom residents.

Non-dom status applies to individuals who have not been domiciled in Cyprus and who have not been tax residents of Cyprus for more than 17 of the last 20 years. The status is confirmed by a non-dom certificate issued by the Cyprus Tax Department.

60-day rule. It allows foreigners to establish tax residency in Cyprus after spending 60+ days per year in the country. To be eligible, they must[11]:

• spend at least 60 days in Cyprus during the tax year;
• do not spend more than 183 days in any single other country;
• maintain a permanent home, owned or rented, in Cyprus;
• be employed in, a director of, or operating a business registered in Cyprus.

Italy

Italy offers a special tax regime for new tax residents aimed at wealthy individuals who relocate to the country. Under this regime, eligible taxpayers can pay a fixed annual substitute tax on foreign-source income instead of ordinary Italian income tax on that income, while Italian-source income remains taxable under the standard rules at the rate of up to 43%.

Starting January 1st, 2026, the annual substitute tax is €300,000, and the regime can be used for up to 15 years. It may also be extended to qualifying family members for an additional €50,000 per person per year. 

To qualify, the individual must transfer tax residence to Italy and must not have been an Italian tax resident for at least 9 of the previous 10 tax years. 

The regime is particularly attractive for people with substantial foreign income, as it offers predictability and can simplify tax planning after relocation.

Hungary

Hungary levies a flat personal income tax of 15% on worldwide income for all residents, which makes it one of the lowest flat income tax rates in the European Union. Non-residents are taxed at the same 15% rate on Hungarian-source income.

Several targeted exemptions reduce or eliminate the tax liability for specific groups[12]:

1. Mothers raising 4 or more children may claim a personal income tax allowance on eligible income included in the consolidated tax base, such as employment income. 
2. Individuals under 25 may claim a tax allowance up to a monthly cap linked to the national average gross salary.
3. Newlyweds are eligible for a monthly tax base allowance for a period of up to 24 months from the month following the marriage.

Hungary’s corporate income tax rate of 9% is the lowest in the European Union. This rate applies to all resident companies on worldwide profits and to non-resident companies on Hungarian-source profits.

Portugal

On January 1st, 2024, Portugal introduced the IFICI regime, Incentivo Fiscal à Investigação Científica e Inovação. It replaced the Non-Habitual Resident regime, which had been widely used by Golden Visa investors.

Importantly, the new IFICI regime is no longer aimed at investors. It is designed for individuals engaged in eligible scientific, research, innovation, startup, or other highly qualified professional activities.

An investor may qualify only if they also personally perform an eligible role that falls within one of the statutory categories. For example, an investor may qualify if they actively serve as a startup founder, board member, university professor, scientific researcher, or highly qualified executive or specialist in an eligible Portuguese company, rather than acting only as a passive investor.

IFICI applies a flat 20% tax rate on Portuguese-source income from qualifying activities, for a period of 10 consecutive non-renewable years. Eligible applicants must not have been tax residents of Portugal in the preceding 5 years. 

Unlike the original NHR, IFICI does not grant a flat-rate exemption for foreign pension income; pensions from abroad are taxed at standard progressive Portuguese rates under the new regime.

Vanuatu, São Tomé and Príncipe, and Panama offer different approaches to tax optimisation, from zero-tax regimes to targeted incentives and territorial taxation. The benefits depend on the type of income, business activity, and whether the investor becomes a tax resident.

Vanuatu

Vanuatu’s tax system is among the most permissive available to citizenship by investment applicants. The country's revenue base rests principally on indirect taxes rather than income taxes, which benefits both resident individuals and companies.

Taxes for individuals. The categories of income that is not subject to tax in Vanuatu include the following:

• personal income — employment, self-employment, or investment income;
• real estate ownership;
• wealth and net worth;
• inheritance and gifts;
• capital gains;
• capital exports.

Residents and non-residents are treated equally in this respect: Vanuatu citizens who spend the majority of the year outside the country retain the same tax treatment.

Taxes for legal entities. Companies registered in Vanuatu are exempt from corporate income tax for 20 years following their registration date. 

During the exemption period, companies pay an annual government registration fee instead of corporate tax. As of 2026, the fee is $300. However, it might be revised by the authorities so investors should confirm the sum at the time of the company’s incorporation. To qualify for the corporate tax exemption, companies must demonstrate genuine economic connection to Vanuatu.

This combination, zero personal income tax and a 20-year corporate exemption, makes Vanuatu particularly attractive for entrepreneurs registering new operational businesses or holding structures.

São Tomé and Príncipe

São Tomé and Príncipe offers incentives for business investors. Approved projects of at least €50,000 that create new activities may qualify for a reduced 10% corporate income tax rate instead of the standard 25%.

The regime may also include deductions from taxable income and tax due, accelerated depreciation, tax credits, and customs-duty exemptions or reductions for approved imported goods. 

Panama

Panama’s main tax advantage is its territorial system. Only Panama-sourced income is taxed there, while foreign-source income remains outside the Panamanian tax net for both tax residents and non-residents.

For investors, this can be especially attractive because foreign dividends, capital gains, interest, rental income, and pensions are generally not taxed in Panama, even if they become tax residents.

Special economic zones. Panama gives tax breaks in special economic zones. For instance, in the Colón Free Zone, eligible businesses may pay no corporate income tax on qualifying activities. They may also receive relief from property tax and transfer tax, pay no complementary tax on dividends, and use a reduced annual Operation Notice Tax of 0.5% instead of 2%.

In Panama Pacifico, eligible companies may receive corporate income tax relief or pay a reduced 5% rate. Other benefits may include relief on dividends, no withholding tax on royalties, commissions, and technical services, reduced licence fees, and relief from real estate tax and transfer tax on certain land and improvements until December 2029.

Property tax relief. Some newly built properties may qualify for an exemption from annual immovable property tax on the value of the improvements. In other words, the exemption applies to the building, not the land. Depending on the value of the improvements, the exemption may last for 20, 10, or 5 years.

Owner-occupied homes that qualify as the owner’s main residence may be exempt from immovable property tax if their cadastral value does not exceed $120,000 and the owner files the required request.

A double taxation treaty, DTT, is a bilateral agreement between two countries that determines which country has the right to tax specific categories of income, and to which extent. DTTs prevent an investor from paying full tax on the same income in both the country where it is earned and the country where they are tax resident.

Suppose a tax resident of one country earns income abroad. In this case, the source country may tax that income because it arises there, while the country of residence may also tax it under its worldwide income rules. Without a DTT, the same income may be taxed twice.

With a DTT in force, the investor usually pays tax first in the country where the income arises and then receives relief in the country of residence for the tax already paid abroad, often through a tax credit. If the domestic tax rate is higher, the investor pays only the difference. If it is the same or lower, no additional tax is due.

Double tax treaties of countries offering citizenship or residency by investment

Out of all countries with investment immigration programs, European states have the most extensive networks of double taxation treaties. They all have agreements with other EU countries and the UK. All but Hungary has signed the treaties with the US.

EU countries with residency by investment programmes have the following number of double taxation treaties:

• Malta — about 81[13];
• Greece — 58 [14];
• Italy — about 100 [15];
• Portugal — 79 [16];
• Hungary — about 80 [17];
• Cyprus — about 70 [18].

Panama has 17 double taxation treaties signed, 

The Caribbean states have much smaller double taxation treaty networks than the EU countries. Among them, St Kitts and Nevis has the broadest network, which is also the only one that includes a treaty with the US[19]. Antigua and Barbuda, Grenada, and St Kitts and Nevis have treaties with the UK.

São Tomé and Príncipe has only one treaty in force with Portugal, while Vanuatu has no double taxation treaties in force at all.

What happens when no DTT exists

If one’s country of source and the country of tax residence are different, and no double taxation treaty exists, both countries may apply their domestic tax rules to the same income. This can result in the same person or company being taxed twice, especially where one country taxes income by source and the other by residence.

Relief may still be available under domestic law. Some countries allow a foreign tax credit or an exemption even without a treaty, but this depends entirely on local rules. In practice, the taxpayer may need to prove tax residence and show that tax has already been paid abroad. Without a treaty, there are also fewer tools to resolve disputes over where income should be taxed.

For investors, the practical point is simple: if no DTT exists, cross-border income may face a higher risk of double taxation, and tax planning becomes more dependent on the domestic rules of each country than on treaty protection.

The United States is one of the few countries that taxes its citizens on worldwide income regardless of where they live. As a result, acquiring second citizenship does not by itself reduce a US citizen’s US tax obligations.

US citizenship-based taxation and the FEIE

A US citizen living abroad who earns foreign income may qualify for the Foreign Earned Income Exclusion, FEIE[20]. For the 2025 tax year, the FEIE allows individuals to exclude up to $130,000 of foreign earned income from US federal income tax.

To qualify, an individual must have a tax home in a foreign country and meet either the bona fide residence test, an uninterrupted period of residency abroad covering a full tax year, or the physical presence test, requiring at least 330 full days in foreign countries during any 12 consecutive months.

The FEIE applies only to earned income — wages and self-employment income. It does not apply to passive income such as dividends, interest, or capital gains.

If a person qualifies for the FEIE, they must still file a tax return in the US.

FATCA reporting obligations for US dual nationals

The Foreign Account Tax Compliance Act, FATCA, requires foreign financial institutions to report accounts held by US citizens and residents to the IRS, or face withholding on certain US-source payments[21]. 

For individual US taxpayers, FATCA imposes a separate obligation: Form 8938 must be filed when the aggregate value of foreign financial assets exceeds specified thresholds, starting at $50,000 for single filers living in the United States. Failure to file carries substantial penalties.

US citizens must also separately file a Foreign Bank Account Report if the aggregate value of foreign financial accounts exceeds $10,000 at any point during the calendar year[22]. These reporting obligations continue regardless of where a US citizen lives or what additional citizenship they hold.

Renouncing US citizenship: exit tax and implications

Some US citizens with high global incomes choose to renounce their citizenship in order to permanently eliminate US tax obligations. Renouncing US citizenship is a formal legal process, which takes place in front of a US consular or diplomatic officer and must then be approved by the Department of State.

Some individuals are classified as ‘covered expatriates’ if their income or net worth exceeds thresholds set by the IRS. In such cases, an exit tax may apply[23]. Under this rule, all assets are treated as if they were sold at market value on the day before citizenship is renounced. Any gains above the exemption threshold are then taxed in the individual’s final US tax return.

Investors should confirm the current year’s covered expatriate income threshold directly with the IRS at the time of planning, as this figure is adjusted annually.

Second citizenship is a practical prerequisite for renunciation, as renouncing US citizenship without another nationality would leave an individual stateless. Caribbean countries or Vanuatu are among the fastest routes to an alternative citizenship before a planned renunciation.

Using residence or citizenship by investment for tax planning is lawful, but it requires more than obtaining a formal status. Investors should assess both tax and compliance risks, as well as the practical risks linked to the investment programme itself. 

Some risks arise from international reporting rules and tax residency tests, while others relate to programme changes, property due diligence, costs, and renewal conditions.

Tax and compliance risks

CRS reporting and financial transparency. Second passport or residence permit does not in itself protect an investor from tax reporting obligations. Under the Common Reporting Standard, financial institutions in more than 100 jurisdictions report account balances, income, and gains to the relevant tax authorities each year[24].

Holding second passport from a Caribbean or Pacific country does not conceal financial accounts from an investor’s original tax jurisdiction. If an investor remains a tax resident of their home country, CRS will result in their offshore accounts being reported to their home tax authority.

BEPS and economic substance. Corporate structures face similar scrutiny as individuals. Under the OECD BEPS framework[2], tax advantages are more difficult to defend when a company is registered in a low-tax jurisdiction but managed from another country. In practice, investors need real economic substance in the chosen jurisdiction.

EU blacklist exposure. Investors using cross-border structures should monitor the EU list of non-cooperative tax jurisdictions[25], as inclusion on that list may lead to additional scrutiny and restrictions in transactions involving EU taxpayers.

Source-of-funds scrutiny. Source-of-funds checks can be demanding, especially where wealth comes from business sales, inheritances, inter-company transfers, or several jurisdictions. Weak or incomplete documentation may lead to additional compliance questions, delaying an application process.

Banking and KYC scrutiny. Banks may apply enhanced Due Diligence, particularly where an investor appears to hold residence mainly on paper rather than through genuine relocation. This can lead to additional document requests, delays, or account-opening difficulties.

Paper relocation. Tax benefits usually require a genuine relocation, including physical presence, real personal and economic ties in the new country, and, where necessary, an end to tax residency in the previous one. A paper relocation may be challenged if the investor continues to live or manage their affairs mainly elsewhere.

Residence permits vs. tax residency. Investors should remember that residence rights and tax residency are not the same. Holding a residence permit does not automatically make a person a tax resident, nor does it by itself end tax obligations in the previous country. Tax residency alone also does not automatically make a person eligible for citizenship.

Programme and investment risks

Programme changes and threshold increases. Residence and citizenship by investment programmes can change quickly. For example, Spain closed its Golden Visa programme in 2025. Investment thresholds, qualifying assets, and procedural rules may all be revised, sometimes with little notice, so investors should confirm current conditions at the time of application.

Risk of refusal. Approval is not guaranteed, even if all formal requirements are met. Applications may be rejected due to issues with the source of funds, incomplete documentation, or concerns about the applicant’s background. Conducting preliminary Due Diligence before applying can help identify potential risks and reduce the likelihood of refusal.

Hidden costs beyond the minimum. Investors should also account for the fact that the real cost usually exceeds the headline minimum, since taxes, legal fees, government charges, translation costs, and family-related application expenses may significantly increase the overall budget.

Loss of residence status. Long-term planning matters as well. Many residence by investment programmes require the investment to be maintained in order to renew the permit. Selling the asset too early may lead to a loss of status. 

In most cases, any future path to citizenship depends on separate residence and physical presence requirements that the investment alone does not satisfy.

Obtaining residency or citizenship by investment for tax purposes involves legal, financial, and compliance risks, so specialist support is important. 

Immigrant Invest assists investors throughout the process. We begin with preliminary Due Diligence before documents are prepared or funds are committed. This early screening helps identify risks such as sanctions exposure, PEP status, criminal records, court cases, and adverse media before major costs arise. This contributes to the 99% approval rate.

Our company also has an in-house legal and AML compliance team, holds the government licences required to represent clients, and provides itemised cost calculations covering all major fees and related expenses. For fund and deposit options, payments are made directly to licensed funds or government accounts rather than through the agent.

Immigrant Invest has been working in investment migration since 2006, operates in 11 countries, employs more than 70 certified experts, and has delivered over 10,000 passports and residence permits.

1. Tax optimisation is the lawful reduction of tax burden through available rules, reliefs, and structures. It may include changing tax residency, using special tax regimes, registering a company in a more favourable jurisdiction, or relying on treaty protection.
2. To use second citizenship or residency for tax planning, investors must become tax residents of the new country and establish genuine ties to it. A passport or permit alone is not enough.
3. Some countries, such as Greece or Italy, offer special tax regimes for new residents that reduce the effective tax burden. 
4. Some investors use a foreign company as part of their tax strategy. This can be effective only where the company has real economic substance, such as management, staff, or business activity in the country.
5. Tax optimisation can also support pension planning, capital gains planning, and estate planning. This is one reason some investors consider jurisdictions with no inheritance or capital gains tax.
6. For US citizens, second citizenship does not end US tax on worldwide income. The FEIE may reduce tax on earned income, but reporting duties still continue.