Today the Chancellor announced a new Founder’s Relief. On the surface it looks like the first serious tax break for UK founders in years. A 10% rate on up to £10 million of gains when you sell your company, kicking in from April 2027. For a founder exiting on a £10m gain, that’s about £1.4 million less in tax than the next person pays.

Then you read the small print.

To qualify, you need to have owned at least 25% of your company from the moment it started trading. You need shares, so sole traders and partnerships are out. Your company needs at least £10 million in turnover and at least 15 full-time employees in the year you sell. Freelancers, contractors and directors don’t count toward the 15. And then you need to pass two of three tests: grow turnover by an average of 25% a year for three years from £10m, grow headcount by 25% a year for three years from 15 employees, or spend at least £1.5 million a year on R&D.

Translated: your business has to roughly double in size every year for three years. The number of UK founders this actually applies to is, by any reasonable estimate, small. The number in the Rare Founders audience is smaller still.

So who was today’s headline for? Fast-growing, usually venture-backed, late-stage companies. The accountants’ and plumbers’ and agency owners and the twenty-year-overnight-success founders who built something steady and real were never the target.

That’s fine. It’s a political document, not a love letter. The problem isn’t the Founder’s Relief existing. The problem is what it was built to distract you from noticing.

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Business Asset Disposal Relief, the tax break the rest of us use when we sell our businesses, has been quietly halved. The threshold on which you pay the lower 10% effective rate has moved from £1 million of lifetime gains to £500,000.

Here’s what that looks like in cash. According to one of the accountants breaking today’s numbers down: if you make a £1 million gain when you sell your business, two years ago your tax bill would have been around £100,000. Before today it was around £180,000. From today it’s £210,000. The tax bill on a one-million-pound exit has roughly doubled in two years, and most of the people it affects have no idea yet.

If you’ve been building a boring, profitable, independent UK business for a decade with the quiet plan of eventually selling it and buying your freedom back, today’s budget just moved the price of that freedom up again.

The pattern is clear if you squint. The headline rewards venture-shaped late stage founders who were already going to be fine. The actual bill lands on everyone else.

If you own a rental property, or if you’ve been sensible enough to park some savings outside an ISA, there’s a second shift that got mentioned in passing and should probably have been the headline.

From April 2027, the tax rate on income from savings and rental properties is going up by 4p in every pound. Basic rate goes from 20% to 24%. Higher rate from 40% to 44%. Additional rate from 45% to 49%. Your salary is still taxed the same. The money your property and your savings actually earn is now taxed more than the money you work for.

For a landlord with a £10,000 annual rental profit, that’s an extra £400 a year at the basic rate, every year, for doing nothing differently. For a higher-rate taxpayer with £20,000 of rental profit, it’s £800 a year. For a founder who’s taken a lean salary for years and built up some savings as a cushion, the moment that interest crosses the small personal savings allowance (£1,000 for basic rate, £500 for higher), the new rate kicks in.

The ISA allowance stays at £20,000 and anything inside an ISA is untouched. If you’re married or in a civil partnership and one of you pays a lower rate, moving savings and property between you can be done tax-free. If you’re a landlord staring at the news, don’t panic-sell or incorporate overnight - speak to an accountant first. But the direction of travel is clear. Working income is political. Passive income is not.

Minimum wage is going up again, by 3.9% to £13.20 an hour, which works out to roughly £27,000 a year for a full-time worker. Fine in its own right. The bit nobody will put on a slide: in 1999, you had to earn more than four times the minimum wage before you hit the higher-rate tax threshold. From April, that multiple will be about 1.8.

Since 2021, the minimum wage has gone up around 48%. The higher-rate tax threshold has gone up 0%. The employer National Insurance contribution on a single full-time minimum-wage employee has gone from about £1,300 a year to around £3,400. You pay more. Your staff pay more in tax than they used to. And neither side feels better off.

If you employ people in the UK, this budget did not fix any of that. It also didn’t move employer NI, didn’t move corporation tax, and didn’t move dividend tax. The structural squeeze on anyone running a company that actually hires people stays exactly where it was.

Two things to pocket on the way out, because they’re both real.

Business rates. The threshold at which you start paying business rates has gone from £12,000 to £18,000, which the government is estimating will remove around 70,000 small businesses from the system. The honest footnote: the £12,000 threshold has been frozen since 2017. If it had risen with inflation, it would already be close to £18,000. This isn’t a cut, it’s a nine-year catch-up. But you’ll still take it.

Trading allowance. If you have a side hustle in your own name, you can now earn up to £3,000 a year before you have to report it, up from £1,000. This is small but genuinely useful if you’re earning some advisory income on the side, running a tiny Shopify, or doing freelance work alongside your main thing. It’s also the clearest signal in the whole budget that the government knows a growing share of economic activity is happening outside traditional employment, and would rather you declare it than hide it.

Zoom out. The Chancellor stood up today and told the country he wants businesses to grow and scale in the UK, then halved the tax relief founders get when they sell. He launched a shiny new Founder’s Relief with such tight qualification criteria that it applies to a sliver of the market, then raised taxes on the exact kind of passive income most founders use to buy themselves a cushion.

The policy direction isn’t anti-founder. It’s narrower than that. It’s pro a very specific kind of founder: fast-scaling, venture-track, headline-grabbing, probably based in London. If your business doesn’t fit that shape, you’re not the enemy. You’re just not the audience.

For most of the founders reading this, the practical takeaways are the ones nobody put on a slide today. If you were planning to sell in the next few years and your gains sit above £500k, the sums have moved. If you own a rental or hold meaningful savings outside an ISA, the hidden tax rise is real and starts in April 2027. If you employ people, nothing got easier. If you have a side hustle, the trading allowance tripling is a quiet gift worth taking.

The headline was built to make founders feel seen. The small print is where you find out whether you actually were.

✅ Know a founder still celebrating the Founder’s Relief headline without checking whether they qualify? Forward this their way. The next time most people hear these numbers properly will be when their accountant sends the bill.

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