How the 60-day reporting rule works
For several years, the rules surrounding the sale of residential property in the UK have required a much faster turnaround for tax reporting than the traditional self-assessment system. When you sell a property that is not your main residence, such as a buy-to-let investment or a holiday home, you must report the gain and pay the estimated tax to HMRC within 60 days of the completion date. This is a strict window that starts from the day the keys are handed over, not the date of exchange.
This requirement applies to UK residents and covers any residential property where a capital gain has been made. The logic behind this system is to ensure that the government receives tax revenue closer to the time the profit is realised, rather than waiting for the end of the tax year. It is important to note that even if you usually file an annual tax return, this property-specific report is a separate obligation that must be completed using a dedicated online service.
Penalties for missing the 60-day deadline
HMRC applies a structured penalty regime for those who fail to report their property disposal within the 60-day timeframe. The first penalty is an automatic late filing fee of £100. This applies even if there is no tax to pay, or if the tax has been paid but the formal report was not submitted.
If the report is more than six months late, HMRC adds a further penalty of either £300 or 5% of the tax due, whichever is the higher amount. Once the delay reaches 12 months, another £300 or 5% penalty is applied. Beyond these fixed penalties, HMRC charges daily interest on the unpaid tax from the date it was originally due. This interest rate is linked to the base rate and can cause the total debt to grow significantly over time if the delay persists for several months.
If you have missed the deadline, the best course of action is to file the report as soon as possible. HMRC may occasionally waive penalties if you have a reasonable excuse, such as a serious illness or a close bereavement, but general ignorance of the 60-day rule is rarely accepted as a valid reason for lateness.
The role of an accountant after the sale
It is entirely possible and quite common to hire an accountant to handle the reporting and calculation after the sale has completed. You do not need to have an accountant in place before the transaction, though it can help with planning. An accountant will use the HMRC Capital Gains Tax on UK property service to file the return on your behalf.
To do this, you will first need to set up a Capital Gains Tax on UK property account via the gov.uk website. Once you have this account, you can digitally authorise your accountant to act for you. The accountant will then calculate the exact gain, apply the relevant tax rates, and tell you how much you need to pay. Using a professional at this stage ensures that you are taking advantage of all possible reliefs and that you are not overpaying your tax liability.
Calculating the gain and allowable expenses
The calculation of Capital Gains Tax is not simply a matter of subtracting the purchase price from the sale price. Your accountant will work through several layers of figures to arrive at the taxable amount. The starting point is the gross gain, but this is reduced by allowable costs incurred during the period of ownership.
- Purchase and disposal costs: You can deduct the solicitor fees and estate agent commissions paid during both the purchase and the eventual sale.
- Stamp Duty: The Stamp Duty Land Tax paid when you originally bought the property is a deductible expense.
- Capital improvements: You can deduct the cost of works that have added value to the property, such as an extension, a loft conversion, or the installation of a new central heating system. However, general maintenance and like-for-like repairs, such as repainting or fixing a broken boiler, are usually considered revenue expenses and cannot be used to reduce your capital gain.
- Annual Exempt Amount: Each individual has an annual tax-free allowance for capital gains. For the current tax year, this sits at £3,000.
Tax rates and income brackets
The rate of tax you pay depends on your total taxable income for the year. Since April 2024, the rates for residential property are 18% for any gain that falls within the basic rate tax band and 24% for any portion of the gain that falls into the higher or additional rate bands. When your accountant calculates the tax, they will need an estimate of your other income for the year, such as salary, pensions, or dividends, to determine which tax band the property gain sits in.
It is a common pitfall to assume a flat rate. Because the gain itself is added to your income for the calculation, a large property profit can often push a basic rate taxpayer into the higher rate bracket for that specific tax year.
Scenarios and common pitfalls
The 60-day rule does not apply to every property sale. If you sell your main home where you have lived for the entire duration of ownership, you usually benefit from Private Residence Relief, meaning no tax is due and no report is required. However, complications arise if you lived in the property for part of the time and let it out for another part. In these cases, the gain must be apportioned, and a report is likely necessary.
Another pitfall occurs with inherited property. If you inherit a house and sell it later for more than its value at the date of death, you may owe Capital Gains Tax on the increase in value. The 60-day rule applies here as well. Similarly, if you are gifting a property to a family member, this is treated as a sale at market value for tax purposes, even if no money changes hands. You would still need to report the 'gain' based on the current market value within 60 days.
Practical next steps
If you have realised you are approaching or have already passed the 60-day mark, follow these steps to limit the damage. First, gather all your paperwork, including the completion statements from your solicitor for both the purchase and the sale. Find receipts or invoices for any major building works you carried out.
Second, create your UK Property Tax account on the gov.uk website. This requires a Government Gateway ID. If you do not have one, it can take a small amount of time to verify your identity. Third, contact an accountant immediately. Provide them with your property account number so they can link to your record. They can then perform the calculation and submit the return, after which you will be given a reference number to make the payment. Paying the tax is a separate step from filing the report, but both must be completed within the 60-day window to avoid interest charges.
By acting quickly, you can ensure that any penalties are kept to the minimum and that your tax affairs remain in good standing with HMRC.