Do I pay Capital Gains Tax when I sell my main home?

Usually not, if it was your main home for the entire time you owned it. Private Residence Relief (PRR) exempts the gain from CGT in that case, and you wouldn't normally need to report the sale to HMRC either. However, CGT can apply — or PRR can be reduced — in these situations: you let the property out at any point during your ownership; you used part of the property solely for business (not just occasional home working); the property wasn't your main home for the entire ownership period, for example if you moved in after buying or moved out before selling; the garden or grounds are very large (over half a hectare). In these cases, part of the gain may still be exempt, but you'll need to calculate how much. If you're unsure whether your sale triggers a reporting requirement, message us on live chat.