What are the current deadlines for reporting and paying Capital Gains Tax after selling a residential property in the UK, and what happens if I miss them?
Quick Answer
Capital Gains Tax (CGT) on UK residential property sales must be reported and paid to HMRC within 60 days of completion. Missing this deadline triggers penalties and interest charges.
## Understanding UK Capital Gains Tax Reporting Deadlines
For UK residential property disposals completed from April 2020, the **Capital Gains Tax (CGT) on residential property** must be reported to HMRC and the tax paid within **60 days** of the date of completion. This applies to gains made on residential properties that are not your main home, such as buy-to-let properties or second homes. The annual exempt amount for CGT is £3,000 as of April 2024, meaning gains below this threshold do not incur tax, but the reporting obligation for eligible properties may still apply if the gross proceeds exceed four times the annual exempt amount.
### What are the current reporting and payment deadlines for residential property?
As of December 2025, sellers of UK residential property must report and pay any Capital Gains Tax (CGT) due **within 60 days** of the completion date of the sale. This 60-day period applies to most residential property disposals that create a CGT liability. The report is made through a 'UK property account' online, and the payment must be made for the estimated tax liability for the transaction. This accelerated deadline means investors must act quickly after a sale to calculate their gain and submit the necessary information.
### Who does the 60-day rule apply to and who is exempt?
The 60-day reporting and payment rule primarily applies to individuals, trustees, and personal representatives selling UK residential property where a Capital Gains Tax is due. It specifically applies to disposals that result in a taxable gain, after considering any reliefs like principal private residence relief or annual exempt amount. Properties that are solely your main home throughout the ownership period, and thus fully covered by principal private residence relief, generally do not require a report. If the gain is fully covered by PPR, or if the gross proceeds are below four times the annual exempt amount and not otherwise reportable, the 60-day rule won't typically necessitate a report. For instance, selling a BTL property for £200,000 where the gain is £10,000, after deducting allowable costs and the £3,000 annual exempt amount, would necessitate a report and payment within 60 days. Investors considering a property sale should always verify their specific circumstances to avoid penalties.
### What happens if the 60-day deadline is missed?
Failing to report and pay Capital Gains Tax on residential property within the **60-day deadline** results in penalties and interest charges. HMRC implements a penalty regime: a fixed penalty of **£100** is typically issued immediately after the 60-day deadline. If the report is still outstanding after six months, another **£300** penalty is applied, or 5% of the tax due, whichever is higher. After 12 months, a further penalty of £300 or 5% of the tax due (whichever is higher) is imposed. If the failure to report is deemed deliberate, even higher penalties can apply. Furthermore, interest is charged on any overdue tax from the day the tax became due (i.e., the end of the 60-day period) until it is paid in full. This interest accumulates hourly. For example, a higher rate taxpayer selling a BTL property with a £50,000 gain would owe £12,000 in CGT. If this is paid 90 days late, they would face at least the initial £100 penalty plus interest on £12,000 for 30 days of lateness, making timely payment a financially prudent decision for any BTL investment returns.
### How penalties are calculated for late reporting and payment?
HMRC's penalty system is tiered. Beyond the initial £100 fixed penalty, additional penalties accrue over time, encouraging swift compliance. These additional penalties are fixed at £300 or 5% of the tax due, whichever amount is greater, applied at the 6-month and 12-month marks. Continuous late payment could lead to daily penalties as well. For instance, on a £25,000 taxable gain, a higher rate taxpayer would owe £6,000 in CGT. If this payment is delayed by seven months, the penalties could quickly add up to £700 (£100 + £300 + £300 or 5% of £6,000, whichever is greater at each stage) in addition to the interest on the £6,000. This significantly impacts landlord profit margins and overall BTL investment returns. Investors should monitor the property's sale completion date closely and establish a robust process to ensure timely reporting and payment to avoid these additional *costs and maintain profit margins*.
## Investor Rule of Thumb
Always report and pay Capital Gains Tax due on residential property sales within 60 days of completion; penalties and interest accrue rapidly, eroding your profit at current BTL mortgage rates.
## What This Means For You
Most investors who struggle with CGT deadlines do so due to a lack of preparation and understanding of the 60-day rule. If you want to ensure compliance and avoid unnecessary penalties on your property disposals, this is exactly what we cover in our tax modules inside Property Legacy Education. Understanding the rules is paramount for maintaining healthy rental yield calculations and not eating into your landlord profit margins through ignorance.
Steven's Take
The 60-day Capital Gains Tax reporting and payment window for residential property has been a significant change since April 2020. I've seen investors caught out by this, purely from being unaware. It’s crucial to understand that this isn’t just about the tax payment; it's also about reporting. Even if you've offset a gain, you might still have a reporting obligation. The penalties escalate quickly, meaning what might start as a minor oversight can become a substantial cost. Integrate this into your sale process planning.
What You Can Do Next
1. For any sale of a residential property that isn't your main home, identify the exact completion date, then mark your calendar for 60 days from that point. This sets your firm deadline for both reporting and payment.
2. Access the HMRC 'UK property account' online portal via gov.uk/report-and-pay-your-capital-gains-tax to submit your report and make payment. Ensure you have all necessary property acquisition and disposal figures readily available, and consider allowable costs to reduce your taxable gain.
3. Calculate your estimated CGT liability immediately after completion. Utilise an online CGT calculator or consult a property tax accountant to ensure accuracy, especially considering the 18% or 24% rates for basic and higher/additional rate taxpayers, respectively, and the £3,000 annual exempt amount.
4. If you believe you might miss the deadline, contact HMRC's CGT helpline or your tax adviser immediately to understand potential leniency, although penalties are generally applied strictly. Proactive communication can sometimes mitigate further issues.
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