Property Sellers Under HMRC’s Microscope

If you’ve sold a second home or investment property recently, it might be worth giving your tax return a quick once-over. HMRC certainly are.

In the past year, HMRC has seriously stepped up its checks on capital gains tax (CGT). More than 10,000 property-related investigations took place last year, the highest in half a decade. And it’s paying off. They recovered a whopping £256 million in underpaid CGT, which is 41% more than the previous year. HMRC means business.

Why the Sudden Crackdown?

After a few quieter years during and after the pandemic, HMRC is back in action. The government wants to close the so-called “tax gap” and has handed HMRC extra funding, more staff, and better tech to help them do it.

Property sales are right at the top of their hit list. When the housing market boomed after lockdown and the temporary stamp duty cuts came to an end, plenty of people decided to cash in on second homes or investment properties. But not everyone realised what that meant for their capital gains tax bill, and HMRC’s data tools have been picking up on that ever since.

Data Is Doing the Detective Work

The old days of paper records and manual checks are long gone. HMRC now uses powerful data systems that pull information from banks, investment platforms, the Land Registry and even overseas tax authorities.

Thanks to artificial intelligence and data analytics, they can quickly spot patterns and red flags that might point to undeclared gains.

This isn’t just about clawing back unpaid tax. It’s part of a bigger shift towards smarter, data-led compliance. And with more trained investigators and better digital tools at their disposal, it’s safe to say property tax checks are only going to increase from here.

What You Should Do

If you’ve sold a second property, an inherited home or a buy-to-let recently, now’s the perfect time to make sure your CGT reporting is spot on.

Here’s how to stay ahead:

• Check your records: Take a close look at sale prices, purchase costs and any allowable expenses.
• Report on time: Most UK residential property sales need to be reported within 60 days.
• Get advice early: A quick chat with an adviser can help you catch and fix any issues before HMRC gets in touch.

With HMRC’s technology and data sharing now sharper than ever, keeping things accurate and up to date is essential. And if anything feels unclear, getting professional advice can save you a big headache later on.

Need some help? Get in touch and we’ll make sure everything’s in order.