Governments are told that public services must shrink because money is tight. Yet a new Tax Justice Network report says that countries could capture an extra $500bn a year without raising corporate tax rates. The answer is to tax multinational profits where real economic activity happens – known as unitary taxation. No new profit is created. Revenue simply shifts from tax havens where profits are “booked” to the countries where workers produce and customers spend.

Making that principle a global tax standard depends on UN talks opening in New York on Monday. Modelled on the UN climate regime, a fiscal framework convention would create the governing body and procedures, with protocols providing detailed rules. The UN wants agreement by late 2027. Donald Trump’s US walked out last year and urged others to follow. None did.

Rich countries gain most when firms pay tax........

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