Football players and clubs will pay an estimated £45m a year in additional tax under image rights changes announced at the Budget, according to research by accountancy group UHY Hacker Young. The figure is an estimate, not a Treasury projection, and the government has not published its own revenue forecast for the measure. What the estimate does capture is the scale of exposure now facing a sport where many clubs' finances are already stretched thin.

Chancellor John Healey confirmed the change last month, stating plainly: "The government will clarify that image rights payments related to an employment are taxable as employment income and taxed in the same way as wages." He added: "To provide affected sectors with additional time to adjust to this change, the measure will take effect from 6 April 2028."

That 2028 start date is the first caveat in the story. It buys clubs and agents roughly two years to restructure contracts, but it also means no revenue arrives before then, and the Treasury has said nothing about how it will police the transition. What does this change for a player negotiating a sponsorship deal today? In practice, almost everything hinges on the club's role in the arrangement.

How will the new rules divide players?

The clarification creates distinctions that look arbitrary on their face. Adverts featuring players in their club colours could be taxed as part of their football income. Two players in the same sponsorship deal could be taxed differently depending on whether the club was involved in the introduction.

That is the core of the industry's complaint. Elliott Buss of UHY Hacker Young said: "These changes will have a significant impact on football clubs' wage bills. The profitability of so many major clubs is fragile so that is going to be unwelcome."

Buss went further on the substance of the rules themselves: "Many footballers have spent years building genuine personal brands and the rules don't really accurately reflect that – they attach too much importance to the club's role and brand." He predicted a backlash: "Parts of the new rules are going to be seen as unfair by footballers and football clubs."

The fairness argument is real, but so is the enforcement logic behind it. Image rights vehicles have long allowed players to route income through corporate structures at lower rates than salary. HMRC has spent years challenging those arrangements case by case. The Budget measure ends the ambiguity — and, notably, the government has not said what happens to arrangements already in place when 2028 arrives.

Will HMRC read your Instagram?

The tax change arrives alongside a broader enforcement expansion. HMRC is hiring hundreds of extra compliance officers, tasked with casting the net far and wide to recover as much tax as possible — including scrutinising players' social media activity.

Alistair Culverwell of Forvis Mazars, writing for City AM this month, described how this works in practice: "HMRC will collate information from open sources. It is already common practice to use news articles and press interviews against taxpayers when their words conflict with tax statements."

His warning to high earners was direct: "High-profile people, such as footballers, face their social media channels increasingly being checked by HMRC, where careless posts or even words could well lead to misunderstandings or challenges."

What remains unanswered?

The measure forms part of a Budget that could significantly constrain footballers' ability to earn income outside their club pay packet. The stated aim is clarity: image rights income tied to employment becomes wages, taxed as wages. Whether £45m is the real number depends on behavioural responses the research does not model — players restructuring deals, clubs rewriting contracts, sponsors shifting how they book payments.

Until HMRC publishes guidance on the boundary between a personal brand and a club-driven endorsement, that ambiguity, not the tax rate itself, is where the disputes will come from.