Why Millionaires Are Moving: California, London and the Great Wealth Migration of 2026

The state has 85 billionaires on the Forbes 400 (Vietnam.vn (Vietnam.vn)). Forbes España (Forbes España) reports that the flight of millionaires is redrawing the map of the rich in the United States, and the debate about a billionaire tax has sharpened it.

According to TAdviser (TAdviser), business owners with a combined fortune of $160 billion have left Britain in two years. International Finance (internationalfinance.com) estimates that London's role as a global hub for the wealthy will cost it $16 billion as the super-rich leave.

The German-born historian Rainer Zitelmann argues in L'Express (L'Express) that the worst consequence of a tax on the richest is not their departure. In France, the 2027 budget battle over taxing the richest (France 24 (France 24)) shows how political the question has become.

Taiwan's wealthy are accelerating property purchases abroad (udn (udn房地產)), and new fortunes are spread across many more countries than a generation ago.

When the richest move, tax revenue, philanthropy and jobs often move with them — which is why every government on these lists is watching the numbers closely.

カリフォルニア州には、フォーブス誌の長者番付「フォーブス400」に名を連ねる億万長者が85人いる。 (Vietnam.vn); La fuga de millonarios de California redefine el mapa de ricos en EEUU (Forbes España); За 2 года из Британии уехали бизнесмены с общим состоянием $160 млрд. Почему они бегут оттуда (TAdviser); ロンドンの世界的な富裕層拠点としての地位は、超富裕層が英国を離れることにより、160億ドルの損失を被る。 (internationalfinance.com); La pire conséquence d'un impôt sur les plus riches n'est pas leur départ, par Rainer Zitelmann (L'Express); Taxer les plus riches ? Toucher aux retraites ? La "bataille" du budget de retour à l'Assemblée (France 24); 台灣資產破億富豪逾12.4萬人！有錢人加速布局海外 房產專家揭原因 (udn房地產).