Denmark’s exit tax on shares has the unusual quality of being stable. The rules sit in sections 38 to 39 B of the aktieavancebeskatningslov, and the text in the consolidation of 27 August 2025 is identical, word for word, to the text consolidated in January 2021. Norway rewrote its charge twice in three years. Denmark has left its own alone.
The stability is deceptive. Two things are live in 2026. A security obligation took effect on 1 January for Danes who emigrated to the United Kingdom before 2021 and have not moved since. And the entry condition of the whole regime, the seven year residence test, is now before the courts. Neither appears in the statute. Both change who pays.
Two triggers, one of them without leaving
Section 38(1) treats gains and losses on shares as realized where the shares are within Danish taxation and the Danish right to tax ceases for a reason other than the taxpayer’s death. Its third sentence equates a second event with the loss of liability: becoming resident outside Denmark under a treaty concluded by Denmark, including with the Faroe Islands or Greenland.
That is the structure Norway uses, and it catches the same people. A shareholder who keeps enough of a Danish footprint to remain resident under domestic law can still be pushed out by the treaty tie breaker. Death does not trigger the charge this way, although it has consequences once a deferral is running.
The threshold is the portfolio, not the gain
Section 38(2) applies the rules only to persons who, when liability ceases, hold shares with a total market value of 100,000 kroner or more. This is the point most often stated wrongly, because it is not a gain test but a value test. A founder with shares worth five million kroner and an unrealized gain of twenty thousand is inside the regime.
The contrast with Norway is complete. Norway measures latent gain and deducts a basic three million kroner, so only the excess is taxed. Denmark measures portfolio value against an entry threshold of 100,000 kroner, roughly thirteen thousand euros, after which the whole computed gain is in scope. Writing that Denmark taxes from 100,000 kroner of gain is false.
Nor is the threshold the safe harbour it looks like. Section 38(2) disapplies it where the holding contains shares with a negative acquisition cost, or the employee share categories of sections 7 N and 7 P of the ligningslov. Negative acquisition cost is characteristic of reorganizations carried out with tax succession, which is to say of founders, and where it is present, being below 100,000 kroner protects nobody. It is not the same as a portfolio standing at a loss, a mistranslation that inverts the rule.
Seven years in ten, and a question now before the courts
Section 38(3) restricts the regime to persons liable to Danish tax on share gains under section 1 or 2 of the kildeskattelov for periods totalling at least seven years within the ten years before liability ceased. This is the most commercially significant feature of the system: a founder who relocates to Copenhagen and leaves before accumulating seven years of liability in the preceding decade falls outside the exit tax altogether. Denmark is more permissive than Japan, at five years, and than Norway, which imposes no minimum at all.
The exceptions matter as much as the rule. The condition does not protect shares acquired from a spouse who meets it, shares acquired with succession into the transferor’s tax position under sections 34, 35 and 35 A, or the employee share categories above. Nor does it protect anyone who has been through the regime once and returned with a market value reduction under section 39 B: that person cannot restart the clock.
The tax authority’s own guidance records that its reading of the seven of ten years test is not settled: one decision has been appealed to the courts and another is before the Landsskatteretten. The condition is best treated as what it presently is, a rule whose interpretation is open, and not as a fixed planning parameter.
The computation, and the valuation behind it
Under section 38(4) the gain or loss is computed under the ordinary rules of the act, with the value at the moment liability ceases substituted for the disposal proceeds. Losses that would have been deductible on a real disposal can be set only against gains treated as realized on the departure.
The act sets no rate of its own. It refers throughout to section 8 a of the personskattelov, which taxes share income in two bands: for 2026, 27 per cent on the first 79,400 kroner and 42 per cent above that. The limit is doubled for spouses who are fully liable and living together at year end, and is adjusted annually, so the figure means nothing without the year attached.
For a founder the exposure sits in the valuation, not the rate. The Supreme Court held in SKM2018.41.HR that shares must be valued on emigration at the amount obtainable on an open market sale, and accepted that the auxiliary formulas in the administrative circulars produced a figure markedly below it. An unlisted holding valued off a template is not a defended position.
The deferral, the inventory and the annual filing
Deferral under sections 39 and 39 A is conditional on filing the required information on departure together with a beholdningsoversigt, an inventory of the shares held at that moment. Miss that deadline and the right to defer is lost, the tax is treated as having fallen due when it would have without a deferral, and interest runs at the rate fixed by section 7(2) of the collection act plus 0.4 percentage points for each commenced month. A late filing may be disregarded, but that is a discretion, not a right.
Deferral establishes a henstandssaldo, a balance equal to the computed tax, drawn down by the events below. There is no maximum term: Denmark, unlike Norway, sets no twelve year horizon. What it sets instead is a permanent obligation. Information must be filed for every income year in which the balance is positive, with the taxpayer’s address, by 1 July of the following year.
If that filing is late, the deferral lapses and the entire balance falls due. This is the operating risk of the regime and it should not be softened: an informational return, in a country the taxpayer no longer lives in, with no proportionate penalty and no expiry date, is what most often destroys a Danish deferral. The same follows where requested documentation is not produced in time. Amounts that fall due are payable by 1 September of the following year, last business day the twentieth.
Security: the map can change without the taxpayer moving
Where the departure is to a country covered neither by the Nordic mutual assistance convention of 1989 nor by Council Directive 2010/24/EU, deferral is additionally conditional on adequate security, proportionate to the deferred amount and capable of being given as shares, listed bonds or a bank guarantee. The requirement travels both ways: a later move to an uncovered country brings it into play, a move back to a covered one releases it on request. A departure to the Netherlands falls inside the directive, so no security arises.
The United Kingdom shows how fragile that mapping is. Article 100(1) of the Withdrawal Agreement kept the directive applicable between the member states and the United Kingdom until five years after the end of the transition period, which closed on 31 December 2020. The Danish authority’s published position is that taxpayers who emigrated there on or before that date and still live there must give security from 1 January 2026. Someone who left Copenhagen for London in 2019 and has done nothing since acquired a new obligation this year.
Security must also remain adequate throughout, so a fall in the value of the pledged asset triggers a call for more, unless the security consists of the shares carrying the tax, whose decline reduces the claim in parallel. Norway takes the opposite line here, a reminder not to carry a rule from one Nordic system into the other.
Selling, dividends and loans after departure
On a disposal of inventory shares, gain or loss is computed share by share on the original acquisition cost and the actual proceeds, first in first out, with credit for foreign tax. Where the Danish computation exceeds that foreign tax, the excess falls due and the balance is written down when paid. Where it would have produced a loss on the departure value, the balance is reduced further. A fall in value after departure is recognized, by shrinking the balance rather than refunding tax.
Dividends follow the same logic. Danish tax is recomputed on the distribution, credit is given for Danish and foreign tax paid, and any excess falls due. A loan from a company whose shares sit in the inventory is treated more harshly: the full principal falls due, not the tax on it. The rule extends to associated persons and to companies in which that circle holds at least 10 per cent, and is disapplied for credit institutions where the holding is below 5 per cent.
The balance cannot fall below zero, and death is treated as a disposal of the whole inventory. Against that, section 39 A(10) is the release valve: once every share on the inventory has been disposed of, any remaining balance lapses, unless there are unused realized losses to carry forward. Denmark does not pursue a fixed sum. It pursues the portfolio, and when the portfolio is gone, so is the claim.
Coming back is not forgiveness
If the taxpayer becomes Danish resident again while a balance is outstanding, section 39 B does not cancel the debt. It converts it. The market value of the shares still on the inventory is reduced by the lower of the remaining tax converted into a taxable base, and the net gain on those shares measured at the re-entry value against the original acquisition cost. The balance then lapses, and a net loss position produces an increase in value instead.
The latent gain is pushed back into the Danish system rather than written off, and will be taxed when the shares are sold. Norway does the opposite: a return within twelve years extinguishes the charge outright, with no adjustment to basis. The two mechanisms look alike in a summary and behave in opposite ways. Someone who has been through section 39 B also loses the seven year condition permanently on any later departure.
The regime rewards the shareholder who decides early and punishes the one who administers casually. Its entry conditions are generous by international standards, and a genuinely short Danish period keeps a shareholder outside the charge, subject to a test whose interpretation is disputed. Once inside, the deferral is worth claiming, because it preserves the downward adjustment if the shares fall. What it costs is a filing every year, indefinitely, on penalty of the whole balance falling due.