What Is Incorporation Relief, and Why Does It Matter?
When you move a rental property into a limited company, HMRC treats it as though you'd sold the property at market value, even though no money has actually changed hands. That "sale" can trigger a Capital Gains Tax bill on any increase in the property's value since you bought it.
Incorporation Relief exists to soften that blow. Rather than making you pay CGT straight away, it defers the bill until you eventually sell the property (or your shares in the company). It's a genuinely valuable relief, particularly for landlords with properties that have gained a lot of value over the years, and it's worth understanding alongside the other allowable expenses landlords can claim on rental property income, since both affect how much tax you end up paying overall.
The problem is how you now get it. Previously, if you met the conditions, HMRC applied Incorporation Relief automatically. From this April, that's no longer the case. You have to make an active claim through your Self Assessment tax return. Miss it, and you could be facing a CGT bill you weren't expecting and may not have the cash to cover, since you never received sale proceeds in the first place.
As accountant Harvey Dhillon, founder of Zmartly, put it: turning an automatic relief into one you have to ask for is a "quiet trap" for landlords who assume everything's been handled.
If you moved property into a company this tax year, your claim needs to be in by 31 January 2029. That sounds like a long way off, but it's easy to lose track of a deadline that far out, so it's worth noting it now rather than relying on memory later.
Using self-assessment software that tracks your deadlines and prompts you for the right disclosures can take the pressure off remembering claims like this one yourself.