Original title: Tax Migration as Social Contagion: A Tipping-Point Model with Application to the Scandinavian Wealth Tax Debate
Anders G Frøseth · July 2026
When governments tax extreme wealth, does it push rich people to leave and harm the economy? An earlier study claimed wealth taxes drove Norwegian departures that cut long-run GDP by 1.3%. Politicians later scaled this up to claim a Danish wealth tax would cost billions. To examine this, researchers modeled tax migration as social contagion. Under this model, emigration depends on visible moves by peers, which triggers sudden tipping-point cascades rather than smooth, predictable patterns. They found the original 1.3% claim relies on five requirements that all fail. Crucial individuals were missing from the old study, while those who moved were mostly passive wealth-holders whose departures carried near-zero productivity losses. Furthermore, 36 heirs quietly left with approximately 127 bn NOK without giving up corporate control. Moving rich taxpayers creates a sudden, unique chain reaction, not a simple formula anyone can scale up.
Suppose you are deciding whether to join a queue because you can see how long it already is. When the line is short you wait, but once it looks long enough you join — and soon everyone is standing in it. A plan made by assuming the queue grows at a steady, constant rate would be badly wrong, because the real rule depends on what others see and do. Here, Norwegian emigration works the same way: an influential 1.3% economic-loss estimate assumes a smooth, steady response, but people's decisions depend on how many others have already left, so the wave can tip suddenly.
A single Norwegian estimate is being used to argue that a Danish wealth tax would cost billions, a claim central to the 2026 election campaign. This paper argues that estimate cannot be scaled: the Norwegian emigration wave follows tipping-point dynamics and hides a channel where heirs leave while owners stay. If the extrapolation is wrong, the Danish debate rests on a faulty number.
The abstract does not provide an alternative estimate of the aggregate GDP effect, does not quantify the economic impact of the 36 heir-emigration cases, and does not identify the exact tipping point threshold. It also does not offer a direct estimate for Denmark; it only shows why the Norwegian figure cannot be scaled.
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Tax Migration as Social Contagion: A Tipping-Point Model with Application to the Scandinavian Wealth Tax Debate — Anders G Frøseth
Abstract licence: CC0
Explanation generated by Synthesis from the abstract — it is not the original paper. This is a preprint, so it hasn't necessarily been peer reviewed.