There is a particular silence that descends on a man when his accountant slides a number across the table. Not the number he expected. Not the income tax, the property tax, the sales tax, the school tax, the slow bleed he had made his peace with years ago. A different number. The price of the exit.
This week the entire internet watched a man feel it in real time. A well known professor in Quebec posted that he had just found out what it would cost him to leave, and that he was, in his own words, sitting in his study utterly numb. Within a day the post had been seen millions of times. The replies split into two camps: those who called it theft, and those who smirked that he had merely discovered that deferred taxes come due. Both camps missed the more interesting truth.
What he ran into is not a fee. It is not a fine for disloyalty, however much it feels like one. It is a deemed disposition: a legal fiction in which the state pretends, on the day you stop being its tax resident, that you have sold everything you own at full market value, and then taxes you on gains you never actually collected. Your portfolio is liquidated on paper. Your company is sold to no one. The cheque is imaginary. The tax is real.
Once you understand that single sleight of hand, the exit tax stops being a Canadian curiosity and shows itself for what it is: one of the most widely copied instruments in the modern fiscal arsenal, now bolted to the border of country after country. And like most instruments of confiscation, it has a bloodline worth knowing.
The bloodline
The idea was not born in Ottawa. It was born in Berlin, in the dying light of the Weimar Republic.
On 8 December 1931, with the country buckling under the Great Depression and capital fleeing for the borders, an emergency decree introduced the Reichsfluchtsteuer, the Reich Flight Tax. It took a quarter of the net wealth of anyone above a high threshold who dared to move their residence abroad. It was sold, as these things always are, as a temporary measure of national necessity.
What happened next is the part everyone should remember. After 1933 the new regime took this dormant emergency tool and discovered its real potential. The thresholds were lowered. The machinery of valuation, blocked accounts and currency controls was bolted on. And a tax originally aimed at fleeing speculators became an engine for stripping fleeing Jews of nearly everything they owned on their way out of the country. By the late 1930s the state was confiscating the overwhelming majority of an emigrant's assets, not as punishment for any crime, but simply as the toll for the act of leaving.
A free people, looking honestly at that history, might conclude that any tax which punishes departure carries an indelible stain. For a generation the lesson seemed to hold, and the instrument lay dead. Then it returned, rechristened and reupholstered and handed respectable acronyms in capital after capital. The respectable version now spreading across the developed world is the direct descendant of that idea, laundered through the gentler vocabulary of capital gains and fair market value. It is softer than its ancestor. It is the same animal.
The point of telling that story is not to relitigate Germany. The point is the pattern. An exit tax always arrives dressed as crisis management, always promises to touch only the very rich, and always outlives the crisis that justified it. What is new is the geography. The toll is no longer the property of one dark chapter. It now waits at sixteen gates and counting.
The world tour
The clean sweep
Three countries take the broadest swing, deeming you to have sold almost everything you own on the way out.
Canada is where this week's storm broke. Cease to be a Canadian tax resident and the Canada Revenue Agency deems you to have sold most of your worldwide property at market value the day you leave. Half the gain is taxable, the government's own attempt to push that to two thirds having been floated and then cancelled in 2025. Your home and your registered retirement accounts are spared. Your private company, the thing you spent a lifetime building, is not, and its owner faces a valuation with no buyer and no cash to fund the bill. The man in the chair was almost certainly one of these.
Australia runs the same play under a colder name, CGT Event I1. The moment you stop being an Australian tax resident, the law treats you as having disposed of your non-Australian assets at market value and taxes the gain. Canberra offers a single mercy: you may elect to defer, leaving those assets in the Australian net until you actually sell. But the deferral is a trap dressed as a kindness. Choose it and Australia keeps taxing the gains that accrue after you have gone, on assets in a country you no longer live in.
South Africa does it through Section 9H of the Income Tax Act. On the day before you cease residency, you are deemed to have sold your worldwide assets, with South African real estate the main exclusion. The effective rate tops out near eighteen percent. South Africans call it the exit tax, and treat it, rightly, as the final invoice the country hands you on the way to the airport.
The hunt for shares
Most countries are narrower and more cunning. They do not chase your furniture. They chase your equity, your stake, your fund units, the dry powder of a productive life.
Norway is the cautionary tale, because Norway stopped pretending. Leaving now triggers a charge of nearly thirty eight percent on unrealised share gains above a modest threshold, and in 2024 the rules were tightened so the bill must ultimately be paid even if you never sell, with a twelve year clock that follows you across the border. The result was not revenue. The result was an exodus. Founders began leaving before their companies were valuable, because building wealth inside Norway had become a trap with a spring loaded lid. People started calling it, with grim affection, Norway Shrugged.
Germany keeps the original family name, the Wegzugsteuer, alive in section 6 of its AuĂensteuergesetz. It catches anyone who has been resident for seven of the last twelve years and holds at least one percent of a corporation, deeming those shares sold. Sixty percent of the gain is taxed at rates reaching forty five percent, with the solidarity surcharge on top. Moves within the EU can be paid off in seven interest free instalments. A one percent stake is not an oligarch's holding. It is a senior employee with options.
France reintroduced its exit tax in 2011 and reshaped it in 2019. It applies a flat thirty percent (twelve point eight percent income tax plus seventeen point two percent social charges) to unrealised gains on significant shareholdings. Real estate and certain wrappers escape. Moves within the EU defer automatically, and the charge can lapse entirely if you hold the assets long enough after leaving.
Spain built its version into Article 95 bis of the income tax law in 2015. It bites residents of ten of the last fifteen years who hold more than four million euros in shares, or a stake above twenty five percent worth over a million. The unrealised gain is taxed at savings rates. Move within the EU and you defer; move to a non cooperative jurisdiction and Spain can keep treating you as resident for years after you thought you had gone.
Austria taxes the unrealised gain on your shares at twenty seven and a half percent when you move your residence away, with instalment relief for departures inside the EU and EEA. The rate is clean, the logic familiar: the state wants its cut of the appreciation before it loses sight of you.
The Netherlands insists it has no exit tax, and then issues you a conserverende aanslag, a preservation assessment, the moment you emigrate holding a substantial interest of five percent or more in a company. It is a deemed disposal in everything but name, deferred until you actually sell, hanging over the move like a lien. A tax you do not have to pay yet is still a tax you cannot escape.
Denmark levies its fraflytterskat on share portfolios above a low threshold for anyone taxable there for seven of the last ten years, deeming a sale on departure at rates of twenty seven and forty two percent. Payment can be deferred without interest or collateral inside the EU and the Nordic region, which is the closest thing to mercy on this list.
Poland joined in 2019, transposing the EU's anti avoidance directive. Its exit tax hits individuals whose transferred assets exceed four million zloty, at nineteen percent, with a three percent fallback where no cost base can be found. It is currently being tested for legality before the EU's own court, which tells you how raw the instrument still is.
Japan surprised its expatriates in 2015 with a deemed sale of financial assets for anyone holding a hundred million yen or more in securities who has lived there five of the last ten years. The rate is a flat fifteen point three percent on paper gains. Cash and real estate are left out. A long career and a rising portfolio can cross that line without the holder ever feeling rich.
South Korea followed in 2018, taxing large shareholders who emigrate on the unrealised gains in their domestic stock, deemed sold on the day they leave. From 2027 the net widens to foreign shares as well. The pattern is by now monotonous: identify the productive, define the threshold, charge them for the door.
The newest gate
Belgium spent decades as the rare Western country that did not tax capital gains on shares at all. That ended on 1 January 2026. A new ten percent levy on gains in financial assets arrived, and folded neatly inside it is an exit tax: transfer your residence out of Belgium and you are deemed to have realised your gains. Only appreciation after the end of 2025 is caught, moves within the EU can defer, and a return within two years can unwind it. The lesson of Belgium is the most important one in this entire article. A country with no exit tax is not a country that will never have one. It is a country that has not introduced one yet.
The American exception
The United States keeps insisting it is innocent here, and it is half right. America imposes no general exit tax on the merely relocating. What it has instead is a stranger and, for the wealthy, often heavier bargain: it taxes the worldwide income of its citizens for life, no matter where on earth they live. You do not escape the IRS by moving. You escape it only by renouncing, and renunciation is where the real charge appears. Cross two million dollars in net worth, or a high average tax bill, and the moment you hand back the passport you become a covered expatriate, subjected under the section 877A regime to a mark to market deemed sale of everything you own, softened by an exclusion of roughly nine hundred thousand dollars of gain. The compensating grace is at the very end: America hands your heirs a clean step up in basis at death, so a fortune in unrealised gains can pass on largely untaxed. It is a different cage, with a wider exercise yard.
The open door
And then there is New Zealand, which has no general capital gains tax at all, and therefore no exit tax, no deemed disposal, and no final invoice when you leave. You can hold your shares for thirty years, sell the day after you emigrate, and owe Wellington nothing on the gain. A narrow rule touches certain migrants who used a particular method for foreign funds, and property flippers are taxed as traders, but the headline stands. New Zealand is the control group in this experiment. It proves the toll is a choice, not a law of nature.
The fallacies that cost the most
Watching the panic spread online, what is striking is how confidently people reach for solutions that are no solutions at all. The exit tax is beatable, but almost everything the internet tells you to do makes it worse.
"I will just leave quietly and not declare it." This was a strategy in 1975. It is suicide in an age of automatic information exchange. Brokerages file disposition slips, the Common Reporting Standard pipes your foreign accounts straight back home, and the penalties for merely failing to file the emigrant's paperwork run into the thousands per asset, whether or not any tax was owed. You do not outrun a deemed disposition by pretending it did not happen.
"I will move to a treaty country and the treaty will protect me." Tax treaties stop the same gain being taxed twice. As a rule they do not switch off the departure event itself. The deemed disposition fires on the way out regardless of where you are flying to. Confusing the two is the single most common and most costly error in amateur exit planning.
"I will gift everything to my spouse or children first." In most of these systems a gift to a non resident is itself a disposition. You have simply triggered the tax a different way, often while handing the asset to someone the attribution rules will tax anyway. The clever shuffle becomes a confession.
"I will throw it all into a trust the week before I go." Settling assets into a trust frequently counts as a deemed disposition in its own right. Last minute structures do not dodge the tax. They detonate it early, and badly, with professional fees on top.
"I will just sell everything first, so there is nothing left to deem." Congratulations. You have realised the gain voluntarily and paid the same tax, only sooner and with no planning runway. This is not avoidance. It is acceleration with extra steps.
The thread running through every one of these is the same fatal instinct: to treat the exit tax as a problem to be solved at the exit. By the time you are standing at the gate, the trap has already closed. The valuation date is the day you leave, and on that day the appreciation of an entire lifetime is sitting on the table, fully exposed. The game was decided years earlier, at the entrance.
The only strategy that actually wins
Here is the secret these regimes do not advertise, hidden in plain sight inside their own mechanics.
The exit tax only ever reaches the gains that accrued while you were their resident. When you immigrate into one of these countries, most of them quietly reset your cost base to market value on the day you arrive. The clock that will one day be used against you starts ticking the moment you walk in. Belgium says it in black and white: gains banked before you arrived are not taxed, only the rise that happens on Belgian soil. Which means the exit tax is not really a tax on wealth, or even on leaving. It is a tax on the appreciation that happened on their watch.
Turn that lens around and the whole strategy resolves into a single, almost embarrassingly simple principle:
Do not build your wealth inside a country that taxes you for leaving.
Arrive already wealthy and the clock starts high. Little new gain accrues to be clawed back, and the exit, when it comes, is cheap. Better still, do not make yourself their tax resident at all during the years you are building. Build where the meter does not run, and there is nothing for the deemed disposition to seize. You cannot be charged a toll on a road you never drove.
Norway proved this in the negative. Its own founders, staring at the lid of the trap, worked out that the rational move was to relocate before their companies were worth anything, to do their building somewhere the state did not already own a lien on their future. They were right. That is not evasion. It is the most basic form of foresight: choosing the soil before you plant.
The man numb in his study made an honourable, understandable, and entirely backwards calculation. He spent his most productive decades growing a fortune inside a system designed to take a final cut on the way out, and discovered the cut only when it was too late to do anything but feel it. His mistake was not leaving. His mistake was building where he did.
Freedom of movement is not a right you exercise at the border. It is a position you take years in advance, in the quiet, unglamorous decision about where to let your wealth come into being. The people who keep their freedom are not the ones who run fastest for the exit when the number lands on the table. They are the ones who, long before any of this, simply declined to build inside the cage.
Life is short. The exit tax is one of the few injustices you can defeat completely, but only with a plan, and only if the plan comes first.
The ledger at a glance
This article is general commentary, not individual tax or legal advice. Exit tax regimes are complex, fast changing and intensely fact specific. Anyone contemplating a move should take advice tailored to their own jurisdictions and assets before acting.