Oxfam puts offshore hidden wealth at $3.55tn
Panama Papers anniversary revives push for global reporting and wealth taxes, HMRC still cannot count UK billionaires
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The commercial district of Panama City. The Oxfam report on offshore wealth marks 10 years since the Panama Papers investigation into tax havens. Photograph: Martin Bernetti/AFP/Getty Images
theguardian.com
Oxfam says the global super-rich may have hidden as much as $3.55tn from tax authorities, renewing calls for a wealth levy and tighter rules on offshore holdings, according to the Guardian.
The charity, drawing on work by economists including Gabriel Zucman and the EU Tax Observatory, estimates total wealth held offshore rose to $13.25tn in 2023. It argues that while automatic information exchange introduced in 2016 has reduced the share of offshore assets concealed from tax authorities, roughly $3.55tn may still be shielded—more than 3% of global GDP. Oxfam says previous research suggests more than $2.84tn of that untaxed wealth is likely owned by the richest 0.1% of households.
The report is timed to the 10-year anniversary of the Panama Papers and is being used to push for further international coordination, including UN talks on a framework for tax cooperation and expanding the Common Reporting Standard to more countries.
In practice, each new “closing of loopholes” tends to arrive as a new reporting obligation. Banks and asset managers build compliance systems; governments expand registers; cross-border data exchange becomes routine. The richest households can afford bespoke structures and legal teams, while smaller firms and ordinary investors face standardized scrutiny, form-filling and penalties for mistakes.
The UK angle illustrates the political pathway. The Guardian reports Oxfam urging Labour to go further after chancellor Rachel Reeves raised capital gains tax, introduced a council tax surcharge on homes worth more than £2m, and scrapped the “non dom” regime. The Institute for Fiscal Studies has argued that reforming existing wealth taxes—such as council tax and capital gains—may be preferable to creating a new annual wealth tax.
Even the state’s basic inventory problem remains unsolved. The House of Commons public accounts committee has criticised HM Revenue and Customs for not knowing how many billionaires there are in the UK.
Oxfam’s headline figure is trillions hidden offshore.
Parliament’s own watchdog says the tax authority cannot count the people it wants to tax.