Is the 36-Month Rule for CGT Still Valid in 2026?
The 36-month rule no longer applies. Since April 2020, most homeowners receive only 9 months of final period relief. If you’re checking whether 36 months still covers you, it usually won’t. A small number of exceptions remain, depending on timing, circumstances, and specific qualifying conditions. These exceptions are limited and must meet strict criteria.
Situation | Final Period Relief | Who Qualifies |
Property sold before April 2014 | 36 months | Homes sold under old rules |
Property sold April 2014–April 2020 | 18 months | Transitional relief (expired) |
Property sold after April 2020 | 9 months | All homeowners (default) |
Disabled person or care home resident | 36 months | If no other private residence |
The 36-month rule now only for disabled homeowners or care home residents. For everyone else, the relief period is 9 months, automatically applied when you sell.
Table of Contents
Why Did the 36-Month Rule Change? Understanding the Policy Shift
The original 36-month relief was introduced to protect homeowners who struggled to sell their properties quickly. In theory, it was designed for cases where someone moved house but the original property took months to sell.
However, HMRC discovered a problem:
People were using the extended relief to time the property market. Rather than selling immediately, they’d wait out the 36-month window to minimize taxes on properties they’d already vacated. This effectively turned the relief into a loophole for property speculation rather than genuine hardship.
In April 2020, the government reformed the rules:
- Reduced the relief from 36 months to 9 months for all homeowners
- Maintained the 36-month relief exclusively for disabled individuals and care home residents
- This targeted approach ensures relief goes to people who genuinely need it, not property investors timing the market
This is why Google now marks older articles as “outdated”, they explain a rule that no longer applies to 90% of homeowners.
The 9-Month Standard: How It Works in Practice
If you sold your home anytime after April 2020, you qualify for automatic relief on the final 9 months of ownership. You don’t need to do anything to claim it, it applies automatically when you complete your tax return.
Why 9 Months Matters
The 9-month period is automatic and unconditional. It doesn’t matter:
- Whether the property was empty during those final 9 months
- Whether you were trying to sell or just delayed
- Whether market conditions prevented a faster sale
- Your personal circumstances or reason for moving
Example: You moved out in January 2025 and sold in July 2025. Those 7 months fall within your automatic 9-month relief window, you’ll pay no Capital Gains Tax on gains made during that period.
The Fine Print: What Stops You Claiming the 9-Month Relief
The 9-month relief only applies if:
- The property was your only or main residence at some point during your entire ownership period
- You’re a UK resident (special rules apply to non-residents)
- The property is a “dwelling house” (not investment properties or second homes)
If you never lived in the property as your main residence, you get zero relief, including the 9-month extension.
The 36-Month Rule: Who Actually Qualifies (2026)
The 36-month extension is not an alternative choice you can make. It’s a specific exemption for particular circumstances.
Eligibility: Disabled Homeowners and Care Home Residents
According to HMRC HS283 (2025), if you’re a disabled person or a resident in a care home, the final 36 months of ownership may qualify for relief if you do not have any other relevant right in relation to a private residence.
What “disabled person” means: HMRC doesn’t provide a strict definition. It typically includes:
- People registered as disabled with their local authority
- Those receiving disability-related benefits
- People with a condition that substantially limits everyday activities
- Individuals who can demonstrate permanent disability to HMRC
What “care home resident” means:
- Full-time residents in a nursing home or care facility
- Long-term residential care (typically 6+ months as permanent residence)
- Not respite care or temporary stays
The “No Other Relevant Right” Condition
This is crucial and often overlooked. The 36-month extension only applies if you do not have any other relevant right in relation to a private residence.
This means:
- You can’t have another home you could legally live in
- You can’t have a right to occupy another property
- If you own or have rights to another residence, the 36-month relief doesn’t apply, you’re back to the 9-month standard
Example: You’re disabled and sell your main home after 4 years. You also own a cottage abroad. The 36-month relief won’t apply because you have another “relevant right” in a private residence.
Calculating Your Relief: Step-by-Step Process
Step 1: Identify Your Ownership Periods
Divide your ownership into clear periods:
- Period A: Time lived in property as main residence (100% relief)
- Period B: Final 9 months of ownership (100% relief, automatic)
- Period C: Final 36 months of ownership (100% relief, only if disabled or care home resident and no other property)
- Period D: Any other time (0% relief, you pay tax on gains)
If periods overlap (e.g., you lived there the entire time and sold within 36 months), you get 100% relief on the entire gain.
Step 2: Calculate Your Capital Gain
Formula:
Gain = Sale Price − Purchase Price − Allowable Expenses
Allowable expenses include:
- Surveyor and valuation fees
- Legal fees (purchase and sale)
- Stamp duty paid on purchase
- Estate agent’s commission
- Conveyancing costs
- Property improvements (extensions, rewiring, new kitchen, NOT decoration)
- Costs of removing fixtures
Keep evidence:
- Original invoices and receipts
- Dated photographs of improvements
- Bank statements showing payments
- Professional quotes and estimates
Step 3: Apply Private Residence Relief (PRR)
Calculate what percentage of your ownership qualifies for relief:
Taxable Gain = Total Gain × (Periods with Relief ÷ Total Ownership Period)
Example calculation:
- Owned property: 10 years total
- Lived in as main residence: 6 years
- Final 9 months of ownership: 0.75 years (within relief period)
- Total relief period: 6.75 years
- Relief percentage: 6.75 ÷ 10 = 67.5%
If your gain was £100,000: £100,000 × 67.5% = £67,500 relief
Remaining taxable gain: £32,500
Step 4: Deduct Your Annual Allowance
For 2025/26, each individual has a £3,000 annual Capital Gains Tax allowance.
Example:
- Taxable gain after relief: £32,500
- Annual allowance: £3,000
- Amount subject to CGT: £29,500
If your taxable gain falls below £3,000, you owe no Capital Gains Tax.
Step 5: Apply Your CGT Rate
Capital Gains Tax rates depend on your income and residency:
- Basic rate taxpayers: 18% CGT on residential property
- Higher rate taxpayers: 28% CGT on residential property
Continuing the example:
- Taxable gain: £29,500
- If basic rate (20%): £29,500 × 18% = £5,310 CGT
- If higher rate (40%): £29,500 × 28% = £8,260 CGT
How the Relief Applies
The Quick Sale (No Tax Due)
Your situation:
- Bought: January 2018
- Lived in property: January 2018 to April 2024
- Sold: August 2024 for £400,000
- Purchase price: £250,000
- Costs: £3,000
Calculation:
- Capital gain: £400,000 − £250,000 − £3,000 = £147,000
- Period lived in: 6+ years = 100% relief
- Sale date (August 2024) is within 9 months of moving out = additional 100% relief
- Total relief applied: 100%
- Taxable gain: £0
- CGT owed: £0
Result: Even though you made a substantial gain, you pay no Capital Gains Tax because you lived in the property and sold within the relief window.
The Landlord Who Let Their Home
Your situation:
- Bought: March 2012
- Lived in property: March 2012 to July 2018
- Let as rental property: August 2018 to June 2024 (5 years 10 months)
- Sold: June 2024 for £450,000
- Purchase price: £200,000
- Improvement costs: £15,000
- Legal and agent fees: £5,000
Calculation:
- Capital gain: £450,000 − £200,000 − £20,000 = £230,000
- Total ownership: 12 years (144 months)
Periods:
- Lived in: March 2012 to July 2018 = 6.33 years = 52.8% of ownership
- Final 9 months (June 2021 to June 2024): 9 months of a 12-year period = 7.5% of gain
Relief calculation:
- Relief period: 6.33 + 0.75 = 7.08 years out of 12 = 59% of gain
- Relief amount: £230,000 × 59% = £135,700
- Taxable gain before allowance: £230,000 − £135,700 = £94,300
- Annual allowance: £3,000
- Final taxable gain: £91,300
Tax at basic rate (18%): £91,300 × 18% = £16,434
Tax at higher rate (28%): £91,300 × 28% = £25,564
Key insight: Even though you let the property for nearly 6 years, the final 9 months of ownership gets relief automatically.
The Delayed Sale (Beyond 9 Months)
Your situation:
- Bought: January 2015
- Lived in property: January 2015 to March 2021
- Property empty/listed: April 2021 to December 2024 (3 years 8 months)
- Sold: December 2024 for £500,000
- Purchase price: £300,000
- Improvement costs: £20,000
- Costs: £5,000
Calculation:
- Capital gain: £500,000 − £300,000 − £25,000 = £175,000
- Total ownership: 9.92 years (119 months)
- Sale occurred 44 months after moving out (exceeds 36-month window)
Periods:
- Lived in: January 2015 to March 2021 = 6.17 years = 62.2% of ownership
- Final 36 months would be: December 2021 to December 2024
- But sale is at December 2024 (exactly 36 months after March 2021)
- So final 36 months ARE covered by relief
Wait, this qualifies!
- Relief period: 6.17 + 3 = 9.17 years out of 9.92 = 92.4% relief
- Taxable gain before allowance: £175,000 × (100% − 92.4%) = £13,650
- After £3,000 allowance: £10,650
- CGT at basic rate (18%): £1,917
Key insight: Because the sale falls within 36 months of moving out (even if not within your initial 36-month calculation), you still get the 9-month automatic relief, significantly reducing your tax bill.
The 36-Month Rule Doesn’t Apply: When You Pay Full Tax
The relief system breaks down if:
- The property was never your main residence
If you always let it out or used it as a second home, you get zero relief. - You sold more than 36 months after moving out
If you moved out in January 2020 and sold in March 2024 (4+ years later), the gain between January 2021 and March 2024 gets no relief (you only get relief for the final 9 months before actual sale date). - You’re a care home resident but own another property
The “no other relevant right” condition disqualifies you. Back to 9-month relief. - You used part of the property for business
If you ran a home office exclusively for business, or let part of the house, that portion of the gain gets no relief. - You’re non-resident when you sell
Different rules apply; specialist advice is needed.
How to Claim Your Relief: Filing Your Tax Return
You don’t need to submit a separate form. Relief is claimed through your Self Assessment tax return.
Step 1: Gather Documentation
Before filing, collect:
- Property purchase deed or completion statement
- Proof of main residence status (council tax records, utility bills, electoral register entries, mortgage documents)
- Evidence of when you moved out (forwarding address confirmation, tenancy agreement start date)
- All receipts for improvements and costs
- The exact sale completion date (not exchange)
Step 2: Calculate Your Figures
Have ready:
- Purchase price and sale price
- All allowable expenses
- Exact dates of ownership and occupation
- Your taxable gain after relief
Step 3: File Your Self Assessment Return
Report in the Capital Gains Tax summary pages:
- Sale date and property address
- Original purchase date
- Sale price and purchase price
- All allowable costs
- Dates you lived in property as main residence
- Relief claimed (Private Residence Relief percentage)
- Your final taxable amount
Step 4: Submit by the Deadline
Filing deadline: 31 January following the end of the tax year.
If you sold between 6 April 2024 and 5 April 2025, you must file by 31 January 2026.
Submit via:
- HMRC online Self Assessment portal
- Tax software (TurboTax, Intuit, etc.)
- A qualified accountant (recommended for complex cases)
Timeline: From Sale to Final Resolution
Milestone | Timeline | Action |
Exchange of contracts | Day 0 | Tax liability arises (for HMRC’s purposes) |
Completion | 7–14 days | Receive sale proceeds |
Gather documentation | 2–4 weeks | Collect all evidence and receipts |
Calculate gain with relief | 3–5 weeks | Prepare figures; work out final tax bill |
File Self Assessment return | By 31 Jan | Submit to HMRC |
HMRC processes return | 6–8 weeks | Receive assessment and bill |
Tax payment due | 31 January | Pay any amounts owed |
Total time to resolution | ~8–9 months | From sale to final payment |
But Don’t Fall for the 36-Month Myth
The 36-month rule does still exist, but it’s a narrow exception, not a default benefit.
For 99% of homeowners:
- You get 9 months of automatic relief when you sell
- This applies regardless of circumstances
- You can’t extend it by waiting longer
- You don’t need to do anything to claim it, it’s automatic
For disabled individuals or care home residents:
- You may qualify for 36 months of relief
- Only if you have no other private residence rights
- Document your situation clearly for HMRC
- Consider professional advice to maximise your relief
What changed: The government closed the loophole that let property investors use the 36-month window to time the market. The new 9-month relief still protects genuine hardship cases where sales take longer than expected, it’s just shorter and more fairly applied.
36-Month Rule CGT Calculator If You Are Disabled
Try our Private Residence Relief Calculator to see exactly how much tax you might owe based on your specific situation.
Frequently Asked Questions
How long do you have to live in a property to avoid Capital Gains Tax UK?
No minimum time. The property must be your genuine main residence (proven by utility bills, voting register, etc.). Full occupation + final 9 months = 100% PRR exemption
If I sell my home in 2026, do I get the 36-month rule?
Only if you're disabled or a care home resident with no other property. Otherwise, you get the standard 9-month relief.
Does the 9-month relief apply automatically, or do I need to claim it?
Completely automatic. You don't fill out a special form. It applies when you calculate your tax return.
What if I moved out 10 months ago? Do I still qualify for relief?
Yes. The 9-month relief covers the final 9 months before you complete the sale, not before you move out.
I'm disabled and sold my home in 2025. Do I get 36 months?
Only if you have no other relevant private residence rights. If you own another home, the answer is no.
What counts as an "allowable expense"?
Legal fees, survey costs, stamp duty, agent fees, and improvements (not decoration). Keep all receipts.
If my taxable gain is £2,500, do I pay any CGT?
No. Your £3,000 annual allowance covers it completely.
Get Professional Advice on Capital Gains Tax
Capital Gains Tax calculations can be complex, especially with:
- Multiple properties
- Periods of letting
- Disability-related relief claims
- Non-resident status
A qualified accountant can review your situation, maximise your relief entitlement, ensure HMRC accepts your claim, and file your return on time.
Tax Care Accountants | Phone: +44 (0)121 368 1277
Book a CGT Consultation
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