On May 21, 2026, Wes Streeting, the former British health minister and current Member of Parliament for Ilford North, thrust himself into the center of the Labour Party’s ongoing leadership debate with a bold proposal: a “wealth tax that works.” Streeting’s plan, which focuses on equalising capital gains tax with income tax, is designed to address what he views as an unfair system that penalizes work and rewards unearned income—a message that’s resonating with many on the Labour left and beyond.
Streeting’s announcement comes at a moment of deep uncertainty for the Labour Party. Prime Minister Keir Starmer, under mounting pressure from within his own ranks, has been urged by Streeting and others to set a timetable for his departure. Streeting, who resigned from the cabinet just a day before unveiling his tax proposal, has made it clear that he’s eyeing a potential run for the party’s top job, though he’s held back from launching an immediate challenge. As he told the BBC’s Political Thinking podcast, “If there’s one thing that we need to do coming out of a change in leadership, it is to bring the tribes of the Labour party together, to unite around one leader as one team, drawing on Labour’s different political traditions to unite progressives and beat Reform.”
The core of Streeting’s proposal is straightforward: capital gains tax, currently levied at rates of 18% to 24%, should be brought in line with income tax rates, which stand at 20%, 40%, and 45% depending on earnings. Under his plan, a person’s capital gains tax band would be determined by adding up their income and profits from assets, ensuring that those who benefit most from asset appreciation pay a fairer share. “A pound made from simply owning assets should not be taxed less than a pound made from a hard day’s work,” Streeting declared in a press release, according to the South China Morning Post.
Streeting’s rationale is rooted in a broader critique of the UK’s current tax system. As he put it to the BBC, “The wealth gap in this country has widened, the opportunity gap in the country is widening and the gap between earned income and unearned income has also widened.” He illustrated the problem with a story from Lancashire: “She slogs her guts out, he puts in far less effort, yet the state rewards him more than her. And we wonder why people are angry.” For Streeting, the system is not only unfair but also economically counterproductive. “The system is penalising work. It’s not fair and it’s bad for our economy.”
Financially, the proposal could be transformative. According to a 2024 report by the Centre for the Analysis of Taxation, equalising capital gains tax with income tax could raise as much as £14 billion a year. Streeting himself has cited a more conservative estimate of £12 billion in additional annual revenue. These funds, he argues, could be used to address pressing social needs and help close the opportunity gap that has been growing in recent years.
But Streeting is not blind to the criticisms. Detractors warn that raising capital gains tax could trigger capital flight, discourage investment, or simply encourage asset holders to hold onto their investments rather than sell, thus reducing tax receipts. Streeting, however, believes there’s a “good pro-business, pro-growth, pro-productivity argument” for his approach. He contends that the current system actually encourages investment in less productive businesses, distorting the market and holding back economic dynamism.
To address concerns about stifling entrepreneurship, Streeting has proposed specific measures to protect genuine risk-takers. He envisions lower capital gains tax rates for those who are “taking risks building companies,” ensuring that the system remains “pro-worker, pro-entrepreneurialism, pro-fairness.” As he told the BBC, “The kite that I am flying in this leadership contest will be to equalise those rates, with allowances for genuine entrepreneurialism, investment, reinvestment, so that we can be both pro-worker, pro-entrepreneurialism, pro-fairness, and in the course of that, generate up to £12bn worth of revenues.”
Another key component of Streeting’s plan is closing loopholes that allow some individuals to disguise income from work as capital gains, often by setting up personal service companies or taking pay in shares. These strategies, he argues, undermine the integrity of the tax system and contribute to the widening gap between earned and unearned income. By tightening these rules, Streeting hopes to ensure that the wealthy contribute their fair share while also restoring public confidence in the tax code.
Streeting’s proposal has clear political undertones. His resignation from the cabinet and public call for Starmer to step down have fueled speculation about his leadership ambitions. According to The Guardian, Streeting has the support of 81 MPs—the threshold required to launch a formal leadership challenge. However, he has chosen to hold back, citing concerns about party unity and the potential candidacy of Greater Manchester mayor Andy Burnham. “It was clear that if we had been plunged straight into a leadership contest by me or for that matter, anyone else, I think it would have been seen as a deliberate attempt to get ahead of Andy Burnham’s potential return,” Streeting told the BBC.
Streeting’s vision for the Labour Party is one of unity and renewal. He believes that only by bringing together the party’s various factions can Labour hope to defeat the rising threat from Reform UK and other challengers. His tax proposal, with its emphasis on fairness, economic growth, and entrepreneurialism, is intended not just as a policy blueprint but as a rallying cry for a party at a crossroads.
Of course, the debate over capital gains tax is not new in British politics. For years, policymakers and economists have wrestled with the question of how best to balance the need for investment with the imperative of fairness. Streeting’s intervention, however, comes at a particularly fraught moment, as economic inequality and political polarization continue to intensify. His willingness to take on entrenched interests—and to propose concrete, revenue-raising measures—marks him as a figure to watch in the months ahead.
As the Labour Party grapples with its future direction, Streeting’s “wealth tax that works” has injected new energy into the debate over how to build a fairer, more prosperous Britain. Whether his proposals will win broad support remains to be seen, but one thing is clear: the conversation about wealth, work, and fairness is far from over.