How does HMRC find out about capital gains from property?
Henry Morales
Published Feb 27, 2026
HMRC can find out if you sold your house from the land registry records, from records of you advertising your property, bank transfers, any changes in rental income(if you rented the property before),capital gains tax returns which you should file and stamp duty land tax returns from the buyer and a host of other ways.
What is lettings relief capital gains tax?
Lettings relief is a valuable relief that may reduce the capital gains tax (CGT) payable on the sale of a property, which was at some point used as the taxpayer’s only or main residence, and which has also been let as residential accommodation. Many people are familiar with the concept of private residence relief.
Do you have to pay capital gains tax when you sell a property?
There are a number of Capital Gains Tax calculators available online so you can work out how much CGT you might have to pay if you sell a rental property. It’s important, of course, to use a specialist taxation accountant when it comes to time to lodge your tax return for the financial year in which you’ve disposed of the asset.
How are capital gains calculated for business premises?
According to the ATO, it’s important to consider any CGT impacts of claiming your home as a business premise. To work out the capital gain that is not exempt, you need to take into account a number of factors including: Proportion of the floor area of your home that is set aside to produce income. The period you use it for this purpose.
When do you get exemption from capital gains tax?
The exemption is only available where no other property is nominated as your main residence. What’s interesting about this rule is that if the same dwelling is reoccupied as your main residence, then the six-year exemption resets. So another six years of exemption is available from the date it next becomes income-producing.
When do you pay capital gains tax in Australia?
You see, the Australian Taxation Office is very patient and will wait many years or even decades for its last throw of the dice!