HMRC Wins £6.2m CGT Case: 3 Lessons for Small Business Owners

For many small business owners, the dream is a successful "exit": selling your company or its assets and moving on to the next chapter of your life. However, as a recent high-stakes legal battle between HMRC and the estates of Mukesh and Promila Sehgal shows, the "how" of that exit is just as important as the "how much."

The First-tier Tribunal (FTT) recently upheld a staggering £6.2 million Capital Gains Tax (CGT) bill for the Sehgals, following a failed tax planning arrangement involving loan notes. While the figures in this case are large, the mistakes made are surprisingly common. Whether you are a startup founder or a long-standing SME owner, this case offers three vital lessons that could save you from a similar fate.

The Case: A £6.2 Million Cautionary Tale

To understand the lessons, we first need to look at what happened. Mukesh and Promila Sehgal sold their shares in an English company called VGL. Instead of taking all the payment in cash, they received a mix of cash and "loan notes."

The plan was relatively straightforward: as non-UK domiciled individuals, they were advised that if these loan notes were "registered" outside the UK (specifically in Jersey), any gain made when the notes were eventually paid out (redeemed) would not be subject to UK Capital Gains Tax: provided the money stayed offshore.

However, HMRC challenged this. They argued that there was no real evidence that the loan notes were ever properly registered in Jersey. Without that proof, the assets were considered "UK-based," and the taxman wanted his cut. The Tribunal agreed with HMRC, leaving the families with a combined tax bill of roughly £6.2 million.

Here are the three biggest takeaways for UK business owners.

1. Record-Keeping is Your Only Real Shield

The primary reason the Sehgals lost their case wasn’t necessarily because the law was against them, but because they couldn't prove they had followed the law. In the eyes of the tax tribunal, if it isn't written down and filed correctly, it didn't happen.

The Tribunal found a significant "lack of evidence" that the loan notes were properly registered in Jersey at the time of redemption. There were hard copies of registers in the UK, but the vital "Jersey register" was nowhere to be found when it mattered most.

Why this matters for SMEs

You might not be dealing with offshore loan notes, but the principle applies to everything from VAT claims to Research and Development (R&D) tax credits. If you claim a business expense but lose the receipt, or if you claim a tax relief but haven't documented the qualifying activity, HMRC can (and often will) disallow it.

Action point: Don't just "do" the work; document it. Ensure that all significant company decisions, share transfers, and tax-sensitive transactions are backed up by a clear, dated paper trail. If you are unsure if your records are up to scratch, it might be time to find the best accountants for your small business to perform a record-keeping audit.

2. Understand Your Assets (and Where They "Live")

The legal term used in this case was "situs": which basically means the location of an asset for tax purposes. The Sehgals believed their loan notes "lived" in Jersey because that’s where they intended the register to be. However, the Tribunal looked at the cold, hard facts of where the register was actually maintained.

For small business owners, the "location" of your business or assets isn't always as simple as where you happen to be sitting. With the rise of remote work and digital assets, the lines are blurring.

Common "Situs" traps for SMEs:

• Intellectual Property (IP): If you hold your company's IP in a separate holding company for protection, where is that company registered?

• Digital Services: If you are selling services abroad, are you accidentally creating a "permanent establishment" in another country?

• Share Transfers: When you issue or transfer shares, are the statutory registers updated immediately?

In the Sehgal case, the failure to ensure the register was physically or legally kept in Jersey was the "smoking gun" for HMRC. When you are making big moves with your business assets, you need to understand the technical requirements of where those assets are legally situated. If you are trying to find a tax specialist for this kind of issue, How to Find an Accountant in the UK: A Step-by-Step Guide for Business Owners is a useful place to start. If you are feeling lost in the jargon, you can compare accountant services to find a specialist who understands your specific niche.

3. Professional Advice: Your Insurance, Not Your Immunity

There is one silver lining in the Sehgal case: the families were spared from paying an additional 25% in penalties. HMRC had tried to argue that the taxpayers were "negligent" in their tax returns. However, the Tribunal disagreed. It is also a reminder that the cost of getting tax advice wrong can be far higher than the cost of getting it right in the first place, especially when compared with the figures explained in How Much Do Accounting Services Cost in the UK? A Complete Pricing Guide for 2026.

The reason? The Sehgals had sought professional advice. They had relied on their accountants to handle the complex implementation and the filing of the returns. Because they had done what any "reasonable" person would do: hiring an expert: the Tribunal ruled that they hadn't been negligent, even though the tax planning itself failed.

The Lesson: Implementation is everything

This is a vital distinction for business owners. Professional advice can protect you from penalties, but it cannot always protect you from the tax itself if the plan is poorly executed. This is exactly why reading Accounting Services UK: The Complete Guide to Finding the Right Accountant for Your Business can help you understand what good professional support should look like.

The Sehgals' advisors had a plan, but the execution (the actual registration of the notes) was flawed. As a business owner, you shouldn't just buy a "product" or a "strategy" from an advisor; you need to ensure they are also overseeing the meticulous implementation of that strategy.

How to avoid red flags: When hiring a firm, look for those who don't just give you a "bright idea" but stay with you to ensure every T is crossed and every I is dotted. Be wary of anyone promising "tax-free" exits without explaining the heavy administrative burden that comes with it. Check out our guide on red flags when hiring an accountant to ensure you are getting the right support.

Final Thoughts: Peace of Mind in a Complex Tax World

The £6.2 million ruling against the Sehgals is a stark reminder that HMRC has the resources and the patience to pursue cases where evidence is lacking. For the average SME owner, the goal isn't usually complex offshore planning, but simply staying compliant while growing the business.

The three lessons: keep perfect records, understand your asset structure, and hire quality advisors who focus on implementation: are the foundations of a healthy business.

Tax doesn't have to be a source of constant anxiety. By working with the right professionals, you can ensure that when it comes time for your exit, you get to keep what you've earned, rather than seeing it vanish in a Tribunal hearing.

At Accountant Search, we specialize in matching SME businesses with the exact tax expertise they need. Whether you are navigating a complex share sale or simply want to ensure your record-keeping is HMRC-proof, we can help you find the right partner.

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Author: Jessica