Skip to main content

This is a new service – your feedback will help us to improve it.

  • Capital gains tax annual allowance

    I sold a residential property in FY 23/24. My gain was below the £6000 threshold for that year, and I had no other capital gains. I completed a reporting return and was told there was £0 CGT to pay. I included the sale in my tax return, using form SA108. My tax calculation just received says I owe £830 CGT on the gain. Why would this be? Additionally, the tax has been calculated at 18%, which is the effective rate from Oct 2024 even though the sale and reporting took place in 2023, when the rate would have been 12%. What is going on?