How To Calculate Private Residence Relief

Calculate your Capital Gains Tax relief when selling your home. Enter your property details below to determine your eligibility and potential tax savings.

Comprehensive Guide to Calculating Private Residence Relief (PRR)

Private Residence Relief (PRR) is a valuable tax relief that can significantly reduce or even eliminate your Capital Gains Tax (CGT) liability when selling your main home. This guide explains everything you need to know about calculating PRR, including eligibility criteria, partial relief scenarios, and how to optimise your tax position.

What is Private Residence Relief?

Private Residence Relief is a tax relief available in the UK that allows homeowners to avoid paying Capital Gains Tax on the profit made from selling their main residence. The relief is automatic in most cases where the property has been your only or main residence throughout the period of ownership.

Eligibility Criteria for Full PRR

To qualify for full Private Residence Relief, the following conditions must be met:

• The property must have been your only or main residence throughout the period of ownership
• You must have lived in the property as your home (not just owned it)
• The property must have a garden or grounds of up to 0.5 hectares (about 1.2 acres)
• You must not have let out part of the property (with some exceptions)
• You must not have used part of the property exclusively for business purposes

Partial Private Residence Relief

If you don’t qualify for full PRR, you may still be eligible for partial relief. This applies when:

1. You’ve lived in the property as your main home for only part of the ownership period
2. You’ve let out part of the property (though Lettings Relief may also apply)
3. You’ve used part of the property for business purposes
4. The property has grounds exceeding 0.5 hectares

Partial relief is calculated by determining the proportion of time the property was your main residence compared to the total period of ownership.

How to Calculate Private Residence Relief

The calculation involves several steps:

1. Calculate the total period of ownership in months from purchase to sale date
2. Determine the eligible period when the property was your main residence
3. Calculate the total gain (sale price minus purchase price minus allowable costs)
4. Apply the relief proportion (eligible period ÷ total period)
5. Subtract any remaining gain from your annual exempt amount
6. Calculate tax on any remaining chargeable gain

The Final Period Exemption

Even if you’ve moved out of your property before selling it, you may still qualify for PRR for the final period of ownership. The rules changed in April 2020:

• For sales before 6 April 2020: The final 18 months of ownership qualify for PRR
• For sales on or after 6 April 2020: Only the final 9 months qualify (36 months if you’re disabled or moving into care)

Lettings Relief

If you’ve let out your property, you might qualify for Lettings Relief in addition to PRR. The maximum Lettings Relief is the lower of:

• £40,000
• The amount of PRR you’re entitled to
• The gain you made during the letting period

From April 2020, Lettings Relief only applies if you share occupancy with the tenant.

Common Mistakes to Avoid

Many homeowners make errors when calculating PRR that could cost them thousands in unnecessary tax:

1. Incorrect ownership period calculation: Always count in complete months
2. Forgetting to include improvement costs: These can reduce your gain
3. Misapplying the final period exemption: The rules changed in 2020
4. Not claiming Lettings Relief when eligible: This can provide additional relief
5. Incorrectly calculating partial relief: The proportion must be precise

Comparison of PRR Before and After April 2020

Aspect	Before April 2020	After April 2020
Final Period Exemption	18 months	9 months (36 months for disabled/care)
Lettings Relief	Available to all landlords	Only if sharing occupancy with tenant
Deemed Occupation Period	More generous	More restrictive
Annual Exempt Amount	£11,700 (2018/19)	£6,000 (2023/24)

Case Study: Calculating Partial PRR

Let’s examine a practical example to illustrate how partial PRR is calculated:

Scenario: Sarah bought her home in January 2015 for £250,000. She lived there until January 2018 when she moved in with her partner. She rented out the property until selling it in January 2023 for £350,000. She spent £15,000 on improvements.

1. Total ownership period: 96 months (Jan 2015 – Jan 2023)
2. Period as main residence: 36 months (Jan 2015 – Jan 2018)
3. Final period exemption: 9 months (Apr 2020 rules)
4. Total eligible period: 45 months (36 + 9)
5. Gain before relief: £350,000 – £250,000 – £15,000 = £85,000
6. Relief proportion: 45/96 = 46.875%
7. Relief amount: £85,000 × 46.875% = £40,000
8. Chargeable gain: £85,000 – £40,000 = £45,000
9. After annual exemption: £45,000 – £6,000 = £39,000
10. CGT at 28%: £39,000 × 28% = £10,920

Optimising Your PRR Claim

To maximise your Private Residence Relief:

• Keep precise records of all dates, costs, and improvements
• Consider timing – the final period exemption can be valuable
• Document your main residence with utility bills, electoral register entries
• Claim all allowable costs including improvements and selling expenses
• Consult a tax advisor for complex situations like multiple properties

Official HMRC Guidance on Private Residence Relief

The UK government provides comprehensive guidance on PRR rules and calculations. For the most authoritative information:

HMRC HS283: Private Residence Relief (2023)

Capital Gains Tax Rates and Allowances

For current Capital Gains Tax rates and annual exempt amounts:

GOV.UK: Capital Gains Tax rates and allowances

Frequently Asked Questions

What counts as a main residence?

Your main residence is typically where you live most of the time. Factors considered include:

• Where you’re registered to vote
• Where your family lives
• Where you receive mail
• Where your doctor/dentist is registered
• Where your children go to school

Can I have more than one main residence?

You can only have one main residence at any time for PRR purposes. However, if you own multiple properties, you can nominate which one should be treated as your main residence for tax purposes by telling HMRC within 2 years of acquiring the second property.

What if I inherit a property?

Special rules apply to inherited properties. The period of ownership is generally counted from the date of death (not when the property was originally purchased). You may qualify for PRR if you move into the inherited property and make it your main residence.

How do I report and pay Capital Gains Tax?

If you need to pay CGT after calculating your PRR:

1. Report the gain in your Self Assessment tax return if you already complete one
2. If you don’t complete a tax return, use the ‘real time’ Capital Gains Tax service
3. You must report and pay any tax due within 60 days of completing the sale

Recent Changes to PRR Rules

The UK government has made several significant changes to PRR rules in recent years:

Change	Effective Date	Impact
Final period exemption reduced from 18 to 9 months	6 April 2020	Less relief for properties not occupied as main residence at sale
Lettings Relief restricted	6 April 2020	Only available if sharing occupancy with tenant
Annual exempt amount reduced from £12,300 to £6,000	6 April 2023	Higher taxable gains for many sellers
30-day CGT reporting window extended to 60 days	27 October 2021	More time to report and pay tax on property sales

When to Seek Professional Advice

While the calculator above provides a good estimate, you should consider professional tax advice if:

• You’ve owned the property for a long time with periods of non-residence
• You’ve let out part or all of the property
• You’ve used part of the property for business
• You own multiple properties
• The property has large grounds (over 0.5 hectares)
• You’re not a UK resident for tax purposes
• The sale involves complex family arrangements

Private Residence Relief can save you thousands in tax when selling your home, but the rules are complex and have changed significantly in recent years. Always double-check your calculations and consider professional advice for significant transactions.