Far fewer consider the measures their current country of nationality or residence may deploy to prevent their departure. From formal exit prohibitions to fiscal charges levied upon departure and the revocation of travel documents, states possess a range of tools to restrain the movement of persons and capital. This analysis examines the six principal mechanisms available to governments and identifies the common vulnerability they exploit.
On 1 January 2026, a provision took effect in Germany requiring males aged 17 to 45 to obtain authorisation from a Bundeswehr career centre prior to leaving the country for a period exceeding three months. The requirement was not novel: West Germany had incorporated it into the Military Service Act in 1965, where it remained dormant for decades. The new military service law reactivated it during peacetime, a change that attracted no public debate during its legislative passage, and most of those affected were unaware of its existence. Following its public disclosure in April 2026, the government retreated from enforcement. A general exemption decree issued that same month lifted the requirement across the board, so that as of mid-2026 no application is necessary and no penalty applies. The obligation remains on the statute books, available for reactivation.
Germany, a G7 democracy with one of the world's most powerful passports, is not a state one would typically expect to legislate exit controls of this nature. That it did so, and has since held the provision in reserve, provides a useful starting point for understanding the full arsenal of tools governments may employ.
A state has six principal means of retaining a person, their assets, or both within its territory. It may impose a border prohibition, freeze financial assets, levy a tax on departure, conscript the individual into military service, withhold the requisite administrative documentation, or cancel the travel document itself. Each of these measures attaches to a specific attribute—citizenship, tax residency, or assets located within the jurisdiction—rather than to the individual as a stateless person. The exposure lies in concentration; the defence lies in distributing one's legal and financial affairs across multiple jurisdictions, with the honest caveat that a second passport rarely extinguishes an obligation imposed by the first.
Exit Bans
An exit ban represents the most direct instrument available. The state orders that a named individual may not depart, and typically retains the passport while the matter is resolved. The trigger need not be criminal. Exit bans are deployed in connection with unpaid debts, tax disputes, pending investigations, commercial litigation, and, in some jurisdictions, as leverage against relatives of persons whom the government actually seeks to detain.
China has expanded its use of exit bans over the past decade. The human rights organisation Safeguard Defenders has documented their increasing application against foreign executives embroiled in commercial disputes and against Chinese nationals connected to investigations, sometimes as a means of pressuring family members abroad. Russia restricts exit for citizens with certain outstanding debts, security clearances, or who fall within the scope of mobilisation. Dozens of other states maintain some version of this power in reserve.
The mechanism attaches to the individual's physical presence within the state and their status there as citizen, resident, or party to a dispute. A second passport offers no protection while one is inside the banning state and subject to its order. What it changes is the situation on either side of that prohibition. Exit bans, like conscription and tax exposure, attach to citizenship and presence, not to the passport carried. A person whose life is based elsewhere is far less likely to be inside a high-risk jurisdiction when a ban is imposed and has somewhere to go should it ever be lifted.
Capital Controls
Capital controls limit the quantum of funds that may be transferred out of a country, or freeze them entirely. One's person may be free to depart while one's capital remains trapped. Such measures appear abruptly, typically announced over a weekend when banks are closed, precisely to preclude any window for response.
Cyprus provides the clearest recent example within a wealthy currency union. During the 2013 banking crisis, the country closed its banks, imposed withdrawal and transfer limits that persisted for approximately two years, and converted a portion of uninsured deposits above €100,000 into bank equity—ultimately, close to half of those balances at Bank of Cyprus. Argentina has cycled through currency controls for years, rationing access to dollars; Argentines cannot renounce their nationality, leaving them permanently exposed to whatever currency restrictions and emergency decrees Buenos Aires next imposes. Nigeria and Egypt have both experienced severe foreign currency shortages in recent years, rendering it nearly impossible to move money out through official channels at the official rate. China caps individual foreign exchange purchases at USD 50,000 per person per year—one reason Chinese buyers have routed property payments through workarounds that regulators continue to close.
Controls attach to assets located within the country and to accounts denominated in its currency. Money already held in another jurisdiction, in another currency, and ideally in another geopolitical bloc lies beyond the reach of any single government's controls.
Exit Taxes
An exit tax is a charge triggered by the act of leaving the tax system, rather than by a disposition of property. The government treats the taxpayer's worldwide assets as if they had been sold the day before departure and taxes the resulting paper gain, even though no cash consideration has changed hands. Most countries that impose such a tax tie it to tax residency. Canada, Australia, Norway, Japan, France, and Germany all operate some form of deemed disposal upon cessation of residency.
The thresholds vary. Japan's regime commences at JPY 100 million in covered assets, sufficient to capture an ordinary equity portfolio. France applies its charge to shareholdings worth €800,000 or more, or representing at least 50% of a company. Germany's Wegzugsteuer targets holders of at least 1% of a corporation. The United States is the outlier that ties the tax to citizenship itself. An American cannot terminate the obligation by moving abroad, as the country taxes its citizens on worldwide income wherever they reside. Only renunciation ends it, and renunciation is precisely what triggers the exit tax. That charge falls on covered expatriates, a status reached by meeting any one of three tests: a net worth of USD 2 million or more, an average annual net income tax liability above USD 211,000 over the prior five years for 2026, or a failure to certify five years of full tax compliance. For 2026, the first USD 910,000 of net unrealised gain is excluded, and gains above that are taxed at capital gains rates.
The exit tax attaches to the tax residency or citizenship being relinquished. When wealth and tax residence are concentrated in a single high-charge jurisdiction, the departure bill lands in full, and a second passport can do little to mitigate it after the fact. The realistic defence lies in timing and structure established before the gains accrue, not in a document acquired on the way out.
Conscription
Conscription, or compulsory military service, is in many states backed by exit controls that prevent service-age males from leaving. Between roughly 60 and 85 countries conscript at least part of their citizenry, and the number is rising. Latvia reinstated conscription in 2024, Croatia is following from 2026, and Germany enacted a new service law in December 2025.
Ukraine presents the hardest current case. Under martial law, males aged 18 to 60 generally may not leave, subject to exemptions, and require a military registration document to cross the border. Since 28 August 2025, males aged 18 to 22 have been permitted to depart freely, but the restriction remains for all older persons. South Korea can call up dual-national men, sometimes catching them on a visit. The singer Yoo Seung-jun, who had publicly promised to serve, took US citizenship in January 2002 before his scheduled enlistment, and Seoul has blocked his return for some 24 years—a ban he is still litigating. Israel, Greece, Turkey, and Russia all assert service obligations on citizens abroad under various conditions.
Germany's new framework reaches beyond the draft itself. Alongside a conscription register, it extended a dormant provision into peacetime, requiring males aged 17 to 45 to seek permission before departing for more than three months. The Defence Ministry exempted everyone from that requirement in April 2026, but it remains on the statute books—a border control a G7 democracy can reactivate at will. This is where a second passport offers least assistance. Conscription attaches to one's first citizenship, and acquiring a new one rarely cancels the service obligation of the old. Renouncing the original citizenship may be the only clean exit, and some states make that difficult or condition it upon completing service first.
Tax Clearance Certificates
A tax clearance certificate operates differently from a charge or a limit. Here, the government requires affirmative sign-off—a document confirming that one's tax affairs are in order—before a person or their money may depart. South Africa operates the clearest active version. Financial emigration through the Reserve Bank was scrapped in March 2021 and folded into a process administered by the South African Revenue Service (SARS). A South African seeking to move money offshore has a discretionary allowance of ZAR 1 million per year, raised to ZAR 2 million in 2026, that requires no clearance. For larger sums, SARS requires that anyone moving up to a further ZAR 10 million per year obtain a Tax Compliance Status confirmation and an Approval for International Transfer. Above that combined ceiling of ZAR 12 million, the transfer requires a manual letter of compliance from SARS and Reserve Bank sign-off on top. Ceasing tax residency can also trigger a capital gains charge on the way out. Moving wealth out of the country, in other words, requires the tax authority's documented blessing.
The United States maintains a dormant version of the same concept on its books. The tax code requires that departing resident and non-resident aliens, with some exceptions, obtain a certificate of compliance from the Internal Revenue Service (IRS), filed on Form 1040-C or Form 2063 and known as a sailing permit, confirming that their US tax liability is settled before they depart. The rule is more than a century old and rarely enforced; most who technically owe it have never heard of it. It has also never been repealed, meaning it sits ready for use should the government decide to activate it. Clearance requirements attach to one's standing as a taxpayer in that jurisdiction. A second residence does not remove the home country's certificate requirement, but it does mean one's financial life is not wholly dependent on a single tax authority agreeing to stamp the form.
Passport Revocation for Unpaid Tax
The final tool is the cancellation of the travel document itself. A passport is state property, and a growing range of debts can result in its loss. The United States ties this directly to tax. A 2015 federal law, the FAST Act, added a provision permitting the IRS to certify a seriously delinquent tax debt to the State Department, which may then deny a passport application, refuse a renewal, or revoke a passport already issued. If one is overseas when this occurs, the Department may limit the passport to a single trip home. For 2026, a seriously delinquent tax debt means more than USD 66,000 in unpaid federal tax, including penalties and interest, with a filed lien or levy behind it; the figure is adjusted for inflation annually from a base of USD 50,000.
The same lever reaches beyond tax. The State Department moved in 2026 to commence revoking the passports of parents with substantial child-support arrears, beginning with those owing USD 100,000 or more and eventually reaching the programme's USD 2,500 threshold, under a debt-collection programme that has collected hundreds of millions of dollars since 1998. Revocation attaches to the passport, which attaches to citizenship. For someone who holds only a US passport, a revoked document can strand them within the country with little warning. For a dual national, the same event is an inconvenience rather than a grounding. A second travel document keeps one mobile while resolving the debt—exactly why a single passport is a single point of failure.
What They All Have in Common
Reviewing the six mechanisms, the same pattern emerges each time: an exit ban that requires one's physical presence within the country; capital controls that reach assets left behind; an exit tax on the residency being relinquished; conscription tied to birthright citizenship; a clearance certificate dependent on a single tax authority; and a passport that a single government can withdraw. Each bites hardest when citizenship, banking, and assets are concentrated in one place. That concentration is the common variable, and it is the one that can be changed.
None of this implies these tools are commonly deployed. Most individuals will never face an exit ban, a frozen account, or a revoked passport, and most who move abroad will deal with an exit tax at worst. Diversification is not a cheat code. A second passport does little against conscription in one's first country and will not erase a US exit tax. Frozen funds in a state enforcing capital controls remain frozen whatever else one holds. What a second citizenship, a second tax residency, and assets spread across jurisdictions actually provide is the removal of single points of failure: a backup travel document if one passport is withdrawn, an account in another bloc if one banking system freezes, a tax residence that answers to more than one authority, and a landing spot one may enter without anyone's permission.
The investment migration market has long made this case for itself. A second citizenship functions as insurance—a fallback for the day a government decides that one's departure is conditional. Its value rises as governments add more tools for making that determination. Most individuals plan a move around the destination. The more useful exercise is to look back at the country one is leaving, ask what leverage it still holds after departure, and decide how much of that leverage one is willing to concentrate in a single government's hands.
If you're planning to obtain a residence permit, invest in a country's economy, or purchase foreign real estate, we invite you to a consultation with our company. During a personal online meeting, we'll discuss your questions in detail and create a step-by-step action plan for you.
On 1 January 2026, a provision took effect in Germany requiring males aged 17 to 45 to obtain authorisation from a Bundeswehr career centre prior to leaving the country for a period exceeding three months. The requirement was not novel: West Germany had incorporated it into the Military Service Act in 1965, where it remained dormant for decades. The new military service law reactivated it during peacetime, a change that attracted no public debate during its legislative passage, and most of those affected were unaware of its existence. Following its public disclosure in April 2026, the government retreated from enforcement. A general exemption decree issued that same month lifted the requirement across the board, so that as of mid-2026 no application is necessary and no penalty applies. The obligation remains on the statute books, available for reactivation.
Germany, a G7 democracy with one of the world's most powerful passports, is not a state one would typically expect to legislate exit controls of this nature. That it did so, and has since held the provision in reserve, provides a useful starting point for understanding the full arsenal of tools governments may employ.
A state has six principal means of retaining a person, their assets, or both within its territory. It may impose a border prohibition, freeze financial assets, levy a tax on departure, conscript the individual into military service, withhold the requisite administrative documentation, or cancel the travel document itself. Each of these measures attaches to a specific attribute—citizenship, tax residency, or assets located within the jurisdiction—rather than to the individual as a stateless person. The exposure lies in concentration; the defence lies in distributing one's legal and financial affairs across multiple jurisdictions, with the honest caveat that a second passport rarely extinguishes an obligation imposed by the first.
Exit Bans
An exit ban represents the most direct instrument available. The state orders that a named individual may not depart, and typically retains the passport while the matter is resolved. The trigger need not be criminal. Exit bans are deployed in connection with unpaid debts, tax disputes, pending investigations, commercial litigation, and, in some jurisdictions, as leverage against relatives of persons whom the government actually seeks to detain.
China has expanded its use of exit bans over the past decade. The human rights organisation Safeguard Defenders has documented their increasing application against foreign executives embroiled in commercial disputes and against Chinese nationals connected to investigations, sometimes as a means of pressuring family members abroad. Russia restricts exit for citizens with certain outstanding debts, security clearances, or who fall within the scope of mobilisation. Dozens of other states maintain some version of this power in reserve.
The mechanism attaches to the individual's physical presence within the state and their status there as citizen, resident, or party to a dispute. A second passport offers no protection while one is inside the banning state and subject to its order. What it changes is the situation on either side of that prohibition. Exit bans, like conscription and tax exposure, attach to citizenship and presence, not to the passport carried. A person whose life is based elsewhere is far less likely to be inside a high-risk jurisdiction when a ban is imposed and has somewhere to go should it ever be lifted.
Capital Controls
Capital controls limit the quantum of funds that may be transferred out of a country, or freeze them entirely. One's person may be free to depart while one's capital remains trapped. Such measures appear abruptly, typically announced over a weekend when banks are closed, precisely to preclude any window for response.
Cyprus provides the clearest recent example within a wealthy currency union. During the 2013 banking crisis, the country closed its banks, imposed withdrawal and transfer limits that persisted for approximately two years, and converted a portion of uninsured deposits above €100,000 into bank equity—ultimately, close to half of those balances at Bank of Cyprus. Argentina has cycled through currency controls for years, rationing access to dollars; Argentines cannot renounce their nationality, leaving them permanently exposed to whatever currency restrictions and emergency decrees Buenos Aires next imposes. Nigeria and Egypt have both experienced severe foreign currency shortages in recent years, rendering it nearly impossible to move money out through official channels at the official rate. China caps individual foreign exchange purchases at USD 50,000 per person per year—one reason Chinese buyers have routed property payments through workarounds that regulators continue to close.
Controls attach to assets located within the country and to accounts denominated in its currency. Money already held in another jurisdiction, in another currency, and ideally in another geopolitical bloc lies beyond the reach of any single government's controls.
Exit Taxes
An exit tax is a charge triggered by the act of leaving the tax system, rather than by a disposition of property. The government treats the taxpayer's worldwide assets as if they had been sold the day before departure and taxes the resulting paper gain, even though no cash consideration has changed hands. Most countries that impose such a tax tie it to tax residency. Canada, Australia, Norway, Japan, France, and Germany all operate some form of deemed disposal upon cessation of residency.
The thresholds vary. Japan's regime commences at JPY 100 million in covered assets, sufficient to capture an ordinary equity portfolio. France applies its charge to shareholdings worth €800,000 or more, or representing at least 50% of a company. Germany's Wegzugsteuer targets holders of at least 1% of a corporation. The United States is the outlier that ties the tax to citizenship itself. An American cannot terminate the obligation by moving abroad, as the country taxes its citizens on worldwide income wherever they reside. Only renunciation ends it, and renunciation is precisely what triggers the exit tax. That charge falls on covered expatriates, a status reached by meeting any one of three tests: a net worth of USD 2 million or more, an average annual net income tax liability above USD 211,000 over the prior five years for 2026, or a failure to certify five years of full tax compliance. For 2026, the first USD 910,000 of net unrealised gain is excluded, and gains above that are taxed at capital gains rates.
The exit tax attaches to the tax residency or citizenship being relinquished. When wealth and tax residence are concentrated in a single high-charge jurisdiction, the departure bill lands in full, and a second passport can do little to mitigate it after the fact. The realistic defence lies in timing and structure established before the gains accrue, not in a document acquired on the way out.
Conscription
Conscription, or compulsory military service, is in many states backed by exit controls that prevent service-age males from leaving. Between roughly 60 and 85 countries conscript at least part of their citizenry, and the number is rising. Latvia reinstated conscription in 2024, Croatia is following from 2026, and Germany enacted a new service law in December 2025.
Ukraine presents the hardest current case. Under martial law, males aged 18 to 60 generally may not leave, subject to exemptions, and require a military registration document to cross the border. Since 28 August 2025, males aged 18 to 22 have been permitted to depart freely, but the restriction remains for all older persons. South Korea can call up dual-national men, sometimes catching them on a visit. The singer Yoo Seung-jun, who had publicly promised to serve, took US citizenship in January 2002 before his scheduled enlistment, and Seoul has blocked his return for some 24 years—a ban he is still litigating. Israel, Greece, Turkey, and Russia all assert service obligations on citizens abroad under various conditions.
Germany's new framework reaches beyond the draft itself. Alongside a conscription register, it extended a dormant provision into peacetime, requiring males aged 17 to 45 to seek permission before departing for more than three months. The Defence Ministry exempted everyone from that requirement in April 2026, but it remains on the statute books—a border control a G7 democracy can reactivate at will. This is where a second passport offers least assistance. Conscription attaches to one's first citizenship, and acquiring a new one rarely cancels the service obligation of the old. Renouncing the original citizenship may be the only clean exit, and some states make that difficult or condition it upon completing service first.
Tax Clearance Certificates
A tax clearance certificate operates differently from a charge or a limit. Here, the government requires affirmative sign-off—a document confirming that one's tax affairs are in order—before a person or their money may depart. South Africa operates the clearest active version. Financial emigration through the Reserve Bank was scrapped in March 2021 and folded into a process administered by the South African Revenue Service (SARS). A South African seeking to move money offshore has a discretionary allowance of ZAR 1 million per year, raised to ZAR 2 million in 2026, that requires no clearance. For larger sums, SARS requires that anyone moving up to a further ZAR 10 million per year obtain a Tax Compliance Status confirmation and an Approval for International Transfer. Above that combined ceiling of ZAR 12 million, the transfer requires a manual letter of compliance from SARS and Reserve Bank sign-off on top. Ceasing tax residency can also trigger a capital gains charge on the way out. Moving wealth out of the country, in other words, requires the tax authority's documented blessing.
The United States maintains a dormant version of the same concept on its books. The tax code requires that departing resident and non-resident aliens, with some exceptions, obtain a certificate of compliance from the Internal Revenue Service (IRS), filed on Form 1040-C or Form 2063 and known as a sailing permit, confirming that their US tax liability is settled before they depart. The rule is more than a century old and rarely enforced; most who technically owe it have never heard of it. It has also never been repealed, meaning it sits ready for use should the government decide to activate it. Clearance requirements attach to one's standing as a taxpayer in that jurisdiction. A second residence does not remove the home country's certificate requirement, but it does mean one's financial life is not wholly dependent on a single tax authority agreeing to stamp the form.
Passport Revocation for Unpaid Tax
The final tool is the cancellation of the travel document itself. A passport is state property, and a growing range of debts can result in its loss. The United States ties this directly to tax. A 2015 federal law, the FAST Act, added a provision permitting the IRS to certify a seriously delinquent tax debt to the State Department, which may then deny a passport application, refuse a renewal, or revoke a passport already issued. If one is overseas when this occurs, the Department may limit the passport to a single trip home. For 2026, a seriously delinquent tax debt means more than USD 66,000 in unpaid federal tax, including penalties and interest, with a filed lien or levy behind it; the figure is adjusted for inflation annually from a base of USD 50,000.
The same lever reaches beyond tax. The State Department moved in 2026 to commence revoking the passports of parents with substantial child-support arrears, beginning with those owing USD 100,000 or more and eventually reaching the programme's USD 2,500 threshold, under a debt-collection programme that has collected hundreds of millions of dollars since 1998. Revocation attaches to the passport, which attaches to citizenship. For someone who holds only a US passport, a revoked document can strand them within the country with little warning. For a dual national, the same event is an inconvenience rather than a grounding. A second travel document keeps one mobile while resolving the debt—exactly why a single passport is a single point of failure.
What They All Have in Common
Reviewing the six mechanisms, the same pattern emerges each time: an exit ban that requires one's physical presence within the country; capital controls that reach assets left behind; an exit tax on the residency being relinquished; conscription tied to birthright citizenship; a clearance certificate dependent on a single tax authority; and a passport that a single government can withdraw. Each bites hardest when citizenship, banking, and assets are concentrated in one place. That concentration is the common variable, and it is the one that can be changed.
None of this implies these tools are commonly deployed. Most individuals will never face an exit ban, a frozen account, or a revoked passport, and most who move abroad will deal with an exit tax at worst. Diversification is not a cheat code. A second passport does little against conscription in one's first country and will not erase a US exit tax. Frozen funds in a state enforcing capital controls remain frozen whatever else one holds. What a second citizenship, a second tax residency, and assets spread across jurisdictions actually provide is the removal of single points of failure: a backup travel document if one passport is withdrawn, an account in another bloc if one banking system freezes, a tax residence that answers to more than one authority, and a landing spot one may enter without anyone's permission.
The investment migration market has long made this case for itself. A second citizenship functions as insurance—a fallback for the day a government decides that one's departure is conditional. Its value rises as governments add more tools for making that determination. Most individuals plan a move around the destination. The more useful exercise is to look back at the country one is leaving, ask what leverage it still holds after departure, and decide how much of that leverage one is willing to concentrate in a single government's hands.
If you're planning to obtain a residence permit, invest in a country's economy, or purchase foreign real estate, we invite you to a consultation with our company. During a personal online meeting, we'll discuss your questions in detail and create a step-by-step action plan for you.