For years, the standard playbook for a business owner in the UK was simple.
Build the business, hold it, and when the time comes, sell it and keep most of what you make.
The tax system was favourable for that very play.
But that arrangement has quietly come apart over the last eighteen months, and most owners have not caught up yet.
Three reliefs that owners lean on to exit without handing a large slice to HMRC have all been cut, in the same short window.
Business Asset Disposal Relief, formerly known as Entrepreneurs’ Relief, used to tax the first million pounds of a qualifying business sale at just 10 percent.
That rate rose to 14 percent in April 2025 and to 18 percent in April 2026.
For a higher-rate seller realising the full million, the relief is now worth around sixty thousand pounds against the standard rate, down from a hundred and forty thousand when it was 10 percent.
The headline allowance has not changed, yet the benefit behind it has more than halved.
Then there is the Employee Ownership Trust, which until late last year was the cleanest exit method in the country.
Sell a controlling stake to a trust set up for your employees and you paid no capital gains tax at all.
In the Autumn Budget the government cut that relief from 100 percent to 50 percent, effective from 26 November 2025.
The tax-free exit is now a roughly 12 percent exit.
And you cannot stack it with BADR. You pick one.
Investors’ Relief had its lifetime limit cut from ten million pounds to one million.
The standard rate of capital gains tax for higher-rate payers now sits at 24 percent.
Put it all together and the picture is simple. The ways a business owner in the UK would use to sell tax-efficiently were all narrowed at once.
This matters even more because of what else is happening at the same time.
Britain has a real succession wave building.
More than half of business owners say they plan to sell part or all of their shareholding over the next decade, and on current estimates over 58,000 mid-sized businesses are likely to see an owner sell within five years.
Around 86 percent of UK private-sector businesses are family-owned, and roughly a third of owners are now over 55.
You would expect a wave of sellers to push prices up.
But that is not happening.
UK private equity is sitting on a record stockpile of dry powder, close to 190 billion pounds, but it is spending carefully.
The buyers are disciplined, with longer holding periods, and there is a clear flight to quality over quantity.
The money is there, but the willingness to overpay for an averagely prepared business is not.
Across the owners we talk to, we see very little awareness about the changes that happened almost silently. Most of them still want to “wait a couple more years”.
But the owner planning to wait for a better market is making two bets that could go wrong.
The market looks like it is not tilting towards sellers, but only towards prepared sellers.
And the tax cost of waiting has gone up, not down, because every relief that softened a sale has been trimmed.
There is another point buried in the data.
Plenty of UK owners treat the business itself as their pension.
The plan is to sell it and live on the proceeds.
Surveys consistently find that tax is the single biggest worry owners have about exiting, named by around 80 percent.
Which means the people most exposed to these changes are exactly the ones least able to absorb them, the owners with no separate retirement pot who needed the sale to net what it would have netted in 2023.
None of this argues for panic.
The anti-forestalling rules introduced alongside the BADR increase mean you cannot rush an artificial contract through to beat a deadline anyway.
What it argues for is preparation, the unglamorous kind that can take years.
Business owners who want to prepare should clean up their financials, calculate addbacks and convert most of their revenue into recurring contracts to command the best sales price.
The gap between those that have done so and the ones that are poorly prepared with the same profit is widening, because buyers now have both the discipline to pay for quality and the leverage to discount everything else.
In a market where the tax take on your exit has risen and the buyer holds the cards, preparation is the one lever still fully in your control.
The full data behind this, with the rate changes, the succession numbers and the sources, is set out in CT Acquisitions’ UK SME succession and exit-tax research as well as checklists on how to prepare your business for a potential exit.
