Selling a property can feel like a straightforward transaction — agree a price, complete the sale, and move on. However, in recent years, HMRC has introduced stricter reporting requirements that have caught many sellers off guard. One of the most commonly misunderstood is the 60 day CGT property reporting rule.
In certain situations, UK residents who sell residential property must report the gain and pay an estimate of Capital Gains Tax within just 60 days of completion. This is a significant shift from the previous system, where gains were typically reported through a Self Assessment tax return at a later date.
Despite the rule being in place for several years, many sellers remain unaware of the deadline, assume it will be handled by their solicitor, or misunderstand when it applies. This has led to missed deadlines, unexpected penalties and unnecessary stress.
This article explains who needs to report, how the process works, and the most common mistakes sellers make, along with a simple example to bring it all together.
What is the 60-day CGT property reporting rule?
The 60 day CGT property reporting rule applies to the disposal of UK residential property where Capital Gains Tax is due.
In these cases, sellers are required to report the gain to HMRC and make a payment on account of the tax within 60 days of completion.
This represents a significant change from the previous system, where gains were typically reported through a Self Assessment tax return at the end of the tax year. The current rules require action much sooner, often at a point when sellers are still dealing with the practical aspects of a move.
In most straightforward cases, the sale of a main home is covered by Private Residence Relief, meaning no Capital Gains Tax is due and no 60-day report is required. However, this depends on how the property has been used over time. Where a property has been let, used for business purposes, or has not always been the owner’s main residence, a gain may still arise.
Full details of how and when to report can be found on the GOV.UK page for reporting Capital Gains Tax.
Understanding whether the rule applies is the first step in avoiding unnecessary delays or penalties.
Who does the 60-day CGT property reporting rule apply to?
The 60 day CGT property reporting requirement applies to UK residents who sell or dispose of a UK residential property and have Capital Gains Tax to pay.
In practice, this most commonly affects individuals selling second homes or buy-to-let properties, where any increase in value may be taxable.
Properties that have been inherited and later sold can also fall within the rules, depending on the gain made between the date of inheritance and the sale. In these cases, it is the increase in value during ownership that is considered for tax purposes.
By contrast, many people will not need to report under the 60-day rule when selling their main residence.
In most straightforward situations, Private Residence Relief applies, meaning any gain is exempt from Capital Gains Tax.
However, as noted earlier, this depends on how the property has been used. Where a home has been let out, used partly for business, or not occupied throughout the entire ownership period, a partial gain may still arise.
Different rules apply to non-UK residents. Individuals who are not resident in the UK may still be required to report disposals of UK property, even where no tax is ultimately payable, and the reporting requirements can be more extensive.
Understanding whether you fall within these categories is an important step in ensuring the correct reporting process is followed.
What sellers so often get wrong with the 60 day CGT property reporting rule
Despite the rules being in place for several years, the 60 day CGT property reporting requirement continues to catch many sellers out.
Most issues arise not from complexity, but from misunderstanding how and when the rules apply.
Missing the deadline
One of the most common mistakes is missing the 60-day deadline altogether. The reporting window starts from the date of completion, not exchange, and sellers are expected to act quickly. Delays can result in penalties and interest, even where the tax due is relatively small.
Assuming someone else will handle it
Another frequent assumption is that a solicitor or conveyancer will handle the reporting. While legal professionals manage the sale itself, the responsibility for reporting and paying Capital Gains Tax usually sits with the individual, unless otherwise agreed. This misunderstanding can lead to the deadline being missed entirely.
Not realising payment is required upfront
Sellers are also often surprised to learn that payment is required upfront. The 60-day return involves making an estimate of the gain and paying the tax at that stage, rather than waiting until the end of the tax year through Self Assessment.
Miscalculating the gain
Calculating the gain itself can be another area of difficulty. Some individuals underestimate the gain, while others fail to take into account allowable deductions.
Costs such as legal fees, estate agent fees and certain capital improvements to the property can usually be deducted when calculating the gain. Overlooking these can result in paying more tax than necessary, while incorrect assumptions can lead to underpayment and later adjustments.
Confusing 60-day reporting with Self Assessment
Finally, there is often confusion between the 60-day reporting requirement and the Self Assessment process. Even where a 60-day return has been submitted, the disposal may still need to be included on a tax return, depending on individual circumstances.
Being aware of these common pitfalls can help sellers approach the process with greater confidence and avoid unnecessary complications.
How the 60 day CGT property reporting process works
Once you have established that the 60 day CGT property reporting rules apply, the process itself follows a clear sequence, although it does require some preparation.
1. Set up a Capital Gains Tax account with HMRC
The first step is to set up a Capital Gains Tax account with HMRC. This is done online and allows you to submit details of the property disposal and make payment. HMRC provides guidance on this process via its service for reporting and paying Capital Gains Tax.
2. Calculate the gain
Next, you will need to calculate the gain. This involves taking the sale price and deducting the original purchase cost, along with allowable expenses such as legal fees, estate agent costs and qualifying improvements. It is important to ensure these figures are as accurate as possible, as they form the basis of the tax estimate.
3. Submit the return
Once the calculation is complete, you can submit the return through your CGT account. At this stage, you will also be required to make a payment on account, based on the estimated tax due.
4. Review and adjust through Self Assessment
Finally, the position can be reviewed and adjusted later through your Self Assessment tax return, where any overpayment or underpayment can be reconciled based on your full financial picture for the year.
Taking a structured approach to each step can help make the process more manageable and reduce the risk of errors.
Penalties and consequences for getting CGT reporting wrong
Failing to meet the 60 day CGT property reporting deadline can lead to penalties, even where the amount of tax due is relatively modest. HMRC applies late filing penalties if the return is not submitted within the required timeframe, and these can increase the longer the delay continues.
In addition to filing penalties, interest may be charged on any unpaid tax from the due date. Because the 60-day system requires a payment on account, delays in calculation or reporting can quickly result in additional costs.
HMRC has also increased its focus on property-related tax compliance in recent years, supported by improved data sharing and reporting systems. This means that missed deadlines or unreported disposals are more likely to be identified.
For this reason, understanding the timing requirements and taking action promptly can help avoid unnecessary charges and reduce the risk of further enquiries.
CGT reporting: worked example
To bring the 60 day CGT property reporting process to life, it can help to look at a simple example.
An individual purchases a buy-to-let property for £200,000 and later sells it for £300,000. This creates an initial gain of £100,000. However, allowable costs can be deducted, such as estate agent fees, legal costs and certain capital improvements.
Assuming total deductible costs of £15,000, the taxable gain would be reduced to £85,000.
From this figure, any available allowances or reliefs would be applied, and the remaining amount would be used to estimate the Capital Gains Tax due at the prevailing rate.
Once the sale completes, the seller has 60 days from completion to report the gain to HMRC and make a payment on account. This is based on the best estimate available at the time.
Later, when completing their Self Assessment tax return, the seller can review the calculation in full. If the original estimate was too high or too low, the position can be adjusted accordingly.
This example highlights how timing and preparation play a key role in ensuring the process runs smoothly.
UK vs overseas property: a quick clarification
The 60 day CGT property reporting rules apply specifically to disposals of UK residential property where Capital Gains Tax is due. This means that if you sell a qualifying property in the UK, you may need to report the gain and make a payment within 60 days of completion.
Different rules apply to overseas property. If you are a UK resident and sell a property abroad, any gain is still subject to UK Capital Gains Tax, but it is typically reported through your Self Assessment tax return rather than the 60-day system.
In these cases, there may also be tax implications in the country where the property is located. Double taxation agreements can affect how tax is ultimately paid, so it is important to understand how the rules interact. Professional financial planning advice is crucial.
CGT reporting and wider financial planning
The 60 day CGT property reporting requirement is just one part of a broader approach to managing Capital Gains Tax effectively.
While meeting the reporting deadline is essential, the way a property is owned, managed and ultimately sold can have a significant impact on the overall tax position.
Understanding what costs can be deducted, how reliefs apply and how gains are calculated can make a meaningful difference over time.
These considerations often form part of wider Capital Gains Tax planning, where decisions are made with a longer-term view rather than at the point of sale.
Similarly, property disposals often sit within a broader financial picture. Bringing tax planning into a structured financial planning approach can help ensure that decisions are aligned with wider goals, whether that involves reinvestment, retirement planning or future property purchases.
Taking a joined-up approach can help reduce surprises and support more informed decision-making over time.
The importance of getting CGT reporting right from the outset
The 60 day CGT property reporting rules have introduced a tighter timeline for sellers, making it more important than ever to understand what is required and when.
Missing the deadline, miscalculating the gain or assuming someone else is handling the process can all lead to unnecessary costs and complications.
With the right awareness and preparation, however, the process becomes far more manageable. Understanding when the rules apply, what needs to be reported and how the figures are calculated can help avoid common pitfalls and reduce stress at an already busy time.
Taking a structured approach ensures that both reporting obligations and wider tax considerations are handled clearly and confidently.
Looking for clarity around Capital Gains Tax on property sales? Talk to Partridge Muir & Warren.
Selling a property can raise important tax considerations, particularly where reporting deadlines and calculations need to be managed carefully. Understanding how the rules apply in your individual circumstances can help bring clarity to what might otherwise feel like a complex process.
At Partridge Muir & Warren, we support individuals and families in taking a structured and well-informed approach to financial planning, including the tax implications of property transactions. Our financial planners and legal experts work alongside our clients’ own professional accounting advisers to ensure decisions are aligned with wider financial goals.
If you would like to explore how Capital Gains Tax planning may fit within your broader financial strategy, get in touch with PMW. We are here to help you move forward with confidence.