Oral question asked in the House of Commons, by Bobby Dean (Liberal Democrat). It was answered on Tuesday, 1 July 2025 on behalf of the Treasury.

High Net Worth Individuals

Question: The Minister will no doubt be aware of reports of the so-called exodus of millionaires. Those reports are from “high profile individuals” and city spokespeople, but there are rarely hard numbers behind them. Are Treasury Ministers able to verify the Tax Justice Network’s research that says that just 0.3% of millionaires have exited the UK and that that number has remained low and stable over the past decade, and will they publish their own figures as well?

Answer: When considering fiscal measures or financial changes, the figures that matter are those provided by the Office for Budget Responsibility. The OBR has certified that the non-dom reforms that the Government have implemented will raise £33.8 billion in total revenue, and that figure accounts for some non-doms who are ineligible for the new regime choosing to leave the UK.

Secondary information