Principal Private Residence Relief exempts the gain on the sale of your main home from CGT. If you lived in the property as your only or main residence for the entire period of ownership, the full gain is exempt and you do not need to file a 60-day return. The complication arises where you lived in the property for part of the ownership period and were absent for the rest — whether because you moved to another property, went abroad, or let the property out.
In these cases, the gain is time-apportioned. The proportion of the gain attributable to periods of qualifying occupation is exempt. The remainder is taxable. The calculation sounds simple in principle — qualifying months divided by total months of ownership — but the rules around what counts as qualifying occupation make it considerably more involved.
Certain periods of absence can be treated as periods of occupation for PPR purposes, even though you were not physically living in the property. These deemed periods include: the final 9 months of ownership, which always qualify regardless of whether you were living there; up to 3 years of absence for any reason; any period of absence due to overseas employment; and up to 4 years of absence due to UK employment that required you to live elsewhere. However, these deemed periods only apply if you actually lived in the property as your main home both before the absence and after it (or, for the final period exemption, before the absence only).
These rules are where most of the complexity — and most of the value — sits in a PPR computation. Many people are unaware that their absences may qualify as deemed occupation, which means they overestimate their taxable gain. Equally, others assume they qualify when the conditions are not actually met, which means they underestimate the tax and file an incorrect return.
Where a property qualifies for PPR relief and has also been let as residential accommodation during the ownership period, letting relief may reduce the taxable gain further. The relief is the lowest of three figures: the amount of PPR relief already given, the gain attributable to the letting period, or GBP40,000. Since April 2020, letting relief is only available where you shared occupation with the tenant — a significant restriction compared with the previous rules. Many online calculators and guidance articles still reflect the pre-2020 position, which can produce incorrect results.
If you own two properties and have lived in both, you can elect which one is treated as your main residence for PPR purposes. The election can be made or changed within 2 years of acquiring the second property. This decision can significantly affect which property benefits from the relief when sold. It also interacts with the Inheritance Tax residence nil rate band, so the election should not be made in isolation. We advise on the overall tax position across both properties before a decision is made.
We calculate the time-apportioned gain, identify all qualifying periods of occupation including deemed periods, apply letting relief where available, and advise on PPR elections where relevant. We prepare the full CGT computation and file the 60-day return within the statutory deadline. Where the computation is complex — multiple absences, overseas periods, partial letting — we document the analysis so the position can be defended if HMRC enquires.
Schedule a free 30-minute consultation to discuss your personal tax compliance.
