Sometimes a policy proposal tells you more about what a country doesn't understand than what it's trying to fix. Denmark's proposed wealth tax is one of those moments.

Prime Minister Mette Frederiksen and her Social Democrat party have proposed a 0.5% annual wealth tax on fortunes exceeding 25 million Danish kroner (roughly EUR 2.3 million). The pitch is straightforward: reduce growing inequality. But the implications for Denmark's startup ecosystem are anything but simple, because the tax would apply to unrealized gains on illiquid shares.

Unrealized gains. On illiquid shares. Read that again. If you're a founder whose company just raised at a new valuation, you'd owe tax on paper wealth you can't actually access. Your equity is locked up, your company is pre-revenue or barely past break-even, and the Danish government wants a percentage of a number that exists only on a cap table. The reaction from the startup world has been swift and sharp.

"This could make things very difficult for founders," Thea Messel, founding partner at Copenhagen-based venture capital firm Unconventional Ventures, told Impact Loop. "Putting that kind of pressure on early-stage founders who are building the solutions that create jobs and move our society forward will be damaging, particularly for the green transition, where we rely so heavily on new innovation."

Stefan Maard, general partner at Climentum Capital, was blunter. "Terrible idea," he said. "Even though I support taxes and welfare, my objection is purely mathematical. This tax would lead to a net loss of revenue for Denmark over just a few years. At the same time, it would stifle investments in the next generation of innovation."

The math argument is worth sitting with. When you tax unrealized gains on illiquid assets, you force business owners to extract capital from their companies to pay the bill. That's money that would otherwise be reinvested or deployed into new ventures. You're essentially taxing the growth engine to fund the present, a trade-off that can look reasonable in a spreadsheet but tends to compound badly over time.

Denmark doesn't need to speculate about what happens when you tax illiquid wealth. It can just look across the border.

Norway introduced a similar wealth tax structure on privately held shares in 2022. The results arrived quickly. Dozens of wealthy entrepreneurs and business owners relocated, many to Switzerland, some to London. The capital that Norwegian investors had previously earmarked for angel investments began flowing to cover their own tax obligations instead.

The Norwegian experience offers a specific data point that Denmark should study carefully. Before the wealth tax changes, Norway's angel investment community was one of the most active per capita in Europe. The country had developed a culture where successful entrepreneurs reinvested their returns into the next generation of startups. That cycle depended on those entrepreneurs having liquid capital available for high-risk, early-stage bets. When the tax on unrealized gains kicked in, the available capital for angel investment contracted. The entrepreneurs still had wealth on paper, but their actual liquidity went to tax payments instead of startup checks.

Two Danish founders, Cecilie Jacobsen of wawa fertility and Madeleine Bjornestad Roed of Stack by me, wrote in a Sifted op-ed that Norwegian investors have been quietly repeating the same messages: "We're focusing more internationally." "We're diversifying outside Norway." "Have you considered relocating?" The ecosystem didn't collapse dramatically. It eroded gradually. And that's the danger.

Early-stage investing is already high risk with historically uneven returns. When you layer on an annual tax on unrealized paper values, the risk-adjusted equation shifts just enough to change behavior. Angels start putting their money elsewhere. Founders start incorporating elsewhere. The slow bleed is harder to notice than a dramatic departure, which makes it harder to reverse.

The corporate pushback hasn't been subtle. Henrik Andersen, CEO of wind power giant Vestas, publicly stated he'd leave Denmark if the tax passes. Robert Maersk Uggla, chairman of shipping conglomerate Maersk, said the same. These aren't anonymous startup founders airing grievances on social media. They're leaders of Denmark's biggest companies making calculated public statements designed to shape the debate.

The timing of this proposal adds another dimension. Denmark is heading into a snap election, and wealth taxation polls well with voters who are frustrated by visible inequality. But the tech ecosystem's concerns aren't about opposing taxation in principle. Most founders and investors in the Nordic region support progressive taxation and robust welfare states. Their objection is specifically about taxing unrealized, illiquid gains, a mechanism that creates real cash obligations against theoretical paper value. A founder whose company is valued at DKK 100 million after a Series B still can't pay rent with that number. It's a cap table entry, not a bank balance.

Sara Rywe, general partner at Sweden-based VC firm ByFounders, shared a text message she received from the founder of what she described as one of Denmark's "next unicorns": "We'll have to move to the UK if this goes through." Private conversations like these are multiplying across the ecosystem.

The competitive dynamics within the Nordics matter here too. Stockholm, Helsinki, and increasingly Tallinn have all been actively courting international talent and building founder-friendly environments. If Denmark introduces a structural disadvantage through illiquid wealth taxation, the beneficiaries will be its immediate neighbors. Copenhagen is a 30-minute bridge ride from Malmo, Sweden. The ease of relocation within Scandinavia means the friction of moving is lower than in almost any other part of the world. A Danish founder who incorporates in Sweden doesn't even need to change time zones.

Denmark has been building genuine momentum in tech. The country's startup scene has produced strong companies in healthtech, cleantech, biotech, and increasingly in AI. Copenhagen has become a credible European tech hub. But that reputation isn't permanent. Ecosystems are fragile things built on the willingness of talented people to stay in one place, start things, and fund things.

Over half of Danish voters currently support a wealth tax, according to recent polling. The political incentives are obvious. But there's a gap between what polls well and what produces the outcome you want. If the goal is reducing inequality, pushing founders and capital out of the country achieves the opposite. You don't get more equality by having fewer companies to employ people.

What makes this debate particularly challenging is that both sides are arguing from positions they genuinely believe in. Wealth inequality in Denmark has been growing, and the social contract that underpins the Scandinavian model depends on a shared sense of fairness. Taxing the wealthy isn't an unreasonable response to that trend. But the specific mechanism matters enormously. A wealth tax on liquid assets, on publicly traded stock and real estate, operates differently from one that reaches into the illiquid equity of private companies. The distinction might seem technical, but it's the difference between a policy that captures excess wealth and one that punishes wealth creation.

The loudest worry has been about existing founders leaving. But the more corrosive risk is the companies that never get started in the first place. The ambitious 25-year-old in Copenhagen deciding to incorporate in Stockholm or London. The angel investor who redirects capital to a Swedish fund instead of backing a Danish seed round. The serial entrepreneur who relocates preemptively, before there's even a company to tax.

You don't see those decisions in any dataset because they're invisible by nature. But they're the ones that hollow out an ecosystem over years, not months. Norway's experience suggests the visible departures are just the tip. The real damage happens in the decisions that never get made.

The frustrating thing about this debate is that there are workable alternatives. A wealth tax that excludes illiquid shares but captures liquid assets above a threshold would address inequality concerns without creating the perverse incentive to flee. Capital gains taxes at point of realization, perhaps with higher rates for very large exits, would capture the actual value when founders and investors can afford to pay. Some investors have suggested a deferred wealth tax model that accrues during holding periods but becomes payable only upon liquidity events, a compromise that acknowledges both the need for revenue and the reality of startup economics.

Sweden's approach offers one model worth studying. The country maintains a relatively founder-friendly tax environment while still supporting one of Europe's most comprehensive welfare states. It's not perfect, and Swedish founders have their own tax complaints, but the system doesn't create the specific liquidity trap that Denmark's proposal would. The irony is that Denmark could end up pushing talent and capital toward Sweden, its closest competitor and neighbor, through a policy designed to create domestic fairness.

Denmark's snap election is due later this month. For founders and investors in the Danish tech ecosystem, the outcome won't just determine tax policy. It could determine whether the country's startup scene keeps climbing or quietly begins its slide.