If your company buys a UK residential property worth more than £500,000 after 1 April, you may have much less time to file an ATED return than you think.
Many companies are aware of the standard 30 April ATED deadline, but the 30-day acquisition deadline is often missed. This can catch out property companies, buy-to-let companies, overseas companies and businesses that assume no filing is needed because the property is rented out or eligible for relief.
In many cases, an ATED return is required within 30 days of acquisition. This can apply even where no ATED is ultimately payable.
This guide explains:
- When the 30-day ATED deadline applies
- Why this deadline is often missed
- Who needs to file an ATED return
- When relief may apply
- Other key ATED deadlines and rules
- What to do if a deadline has already been missed
Quick Answer
ATED stands for Annual Tax on Enveloped Dwellings.
The rules mainly affect companies and certain corporate structures that own UK residential property worth more than £500,000.
The standard ATED filing deadline is usually 30 April for properties already within scope on 1 April.
However, if a company acquires a property after 1 April, the filing window is usually much shorter. A return is normally due within 30 days of acquisition.
This is one of the most commonly missed ATED deadlines.
Relief may reduce the ATED charge to nil, but it does not always remove the need to file a return or Relief Declaration Return.
The 30-Day ATED Acquisition Deadline
The most important point for newly acquired properties is this:
If a company buys a UK residential property worth more than £500,000 after 1 April, an ATED return is usually required within 30 days of the acquisition date.
This is different from the standard annual filing cycle.
For example, if a company acquires a residential property in June, it should not usually wait until the following April to consider ATED. The filing requirement may arise within 30 days of completion.
This shorter deadline is often overlooked because businesses focus on the better-known 30 April ATED deadline.
HMRC provides further guidance on ATED returns, including when returns need to be submitted or changed.
Why the 30-Day Deadline Is Often Missed
The 30-day deadline is commonly missed because ATED is not always considered at the point of purchase.
This can happen where:
- The property is bought by a company for rental purposes
- The company expects relief to apply
- The property is acquired by an overseas company
- The buyer assumes ATED is only relevant once a year
- The property is part of a wider transaction
- The company’s advisers are focused on SDLT, corporation tax or legal completion
- The business does not realise ATED can apply even where no tax is payable
This last point is particularly important. Many companies assume that if a relief applies, there is nothing to file. That is not always correct.
In many cases, a Relief Declaration Return may still be needed.
Example: Company Purchase After 1 April
A company buys a UK residential property worth £800,000 on 15 July.
The property is intended to be let commercially, so ATED relief may be available.
However, the company may still need to submit an ATED return or Relief Declaration Return within 30 days of acquisition.
If the company waits until the next 30 April deadline, the return may already be late.
That delay can create HMRC penalty exposure even where the ATED charge itself is reduced to nil.
What Is ATED?
ATED, or Annual Tax on Enveloped Dwellings, is an annual tax that mainly applies to companies and certain corporate structures that own UK residential property worth more than £500,000.
ATED generally applies where:
- The property is in the UK
- The property is residential
- The property is worth more than £500,000
- The property is owned by a company or qualifying corporate structure
You can read HMRC’s overview of Annual Tax on Enveloped Dwellings on GOV.UK.
The amount payable depends on the property’s value band.
However, ATED is not only about whether tax is payable. It is also about whether a return needs to be filed.
That distinction is where many mistakes happen.
Who Needs to Consider the 30-Day ATED Deadline?
You should consider the 30-day ATED deadline if a property has been acquired by:
- A company
- A partnership with a corporate partner
- A collective investment scheme
- Certain other corporate structures
ATED can apply to UK companies and overseas companies.
The rules can therefore affect:
- Property investment companies
- Buy-to-let companies
- Property development companies
- Overseas companies holding UK residential property
- Businesses that acquire residential property for staff accommodation
- Companies acquiring mixed-use or complex property assets
For property developers, investors and landlords, our property and construction accountants can help review whether ATED, reliefs or related filing obligations need to be considered.
ATED does not usually apply to individuals who own property personally.
What Counts as a Dwelling for ATED?
For ATED purposes, a dwelling is generally a property used, or capable of being used, as a residence.
This can include:
- Houses
- Flats
- Apartments
- Associated gardens and grounds
- Buildings within the property grounds
Certain types of accommodation are usually excluded from ATED, including:
- Hotels
- Hospitals
- Care homes
- Boarding school accommodation
- Military accommodation
- Student halls of residence
Mixed-use properties can be more complex. For example, a property with both commercial and residential elements may need a closer review to determine whether ATED applies and how the property should be valued.
ATED Filing Deadlines: The Key Dates
The ATED chargeable period runs from 1 April to 31 March.
There are different filing deadlines depending on the circumstances.
| Scenario | Usual ATED deadline |
| Property already within scope on 1 April | 30 April |
| Existing dwelling acquired after 1 April | Usually within 30 days of acquisition |
| Newly built dwelling | Usually within 90 days |
| ATED payment | Normally due by the filing deadline |
The 30 April deadline is important, but it is not the only ATED deadline.
For newly acquired properties, the 30-day deadline is often the one that matters most.
Newly Acquired Property vs Newly Built Property
It is also important to distinguish between an existing property that has been acquired and a newly built dwelling.
An existing residential property acquired by a company after 1 April will usually have a 30-day filing window.
A newly built dwelling will usually have a 90-day filing window.
This distinction matters because using the wrong deadline can lead to late filing penalties.
If there is any uncertainty over whether a property is newly acquired, newly built, newly converted or newly within scope, professional advice should be taken promptly.
Do You Need to File if Relief Applies?
Often, yes.
This is one of the most misunderstood parts of ATED.
A company may qualify for relief that reduces the ATED charge to nil. However, the company may still need to submit a Relief Declaration Return to HMRC.
Common situations where relief may be relevant include:
- Commercially let residential property
- Property development
- Property trading
- Employee accommodation
- Farmhouses
- Social housing
- Public access properties
- Guest houses
A common example is a company-owned residential property that is rented out commercially.
The company may qualify for relief, but that does not automatically mean there is nothing to file.
Reliefs and Exemptions Are Not the Same
Reliefs and exemptions should not be treated as the same thing.
A relief may reduce the ATED charge to nil, but a return may still be required.
An exemption may mean the property is outside the filing requirement altogether.
Examples of exemptions can include:
- Charitable ownership
- Public bodies
- Certain national-purpose bodies
Because the filing consequences are different, companies should not assume that a property is exempt simply because no ATED is expected to be payable.
HMRC’s ATED technical guidance provides more detail on how the rules work, but the practical position should be reviewed based on the company, property and intended use.
ATED Rates for 2026/27
The annual ATED charges for the 2026/27 tax year are:
| Property value | Annual charge |
| More than £500,000 up to £1 million | £4,600 |
| More than £1 million up to £2 million | £9,450 |
| More than £2 million up to £5 million | £32,200 |
| More than £5 million up to £10 million | £75,450 |
| More than £10 million up to £20 million | £151,450 |
| More than £20 million | £303,450 |
The amount payable can sometimes be reduced where:
- The property is only within ATED for part of the year
- Relief applies for part of the year
- Ownership changes occur during the chargeable period
Even where the amount payable is reduced to nil, filing obligations may still need to be considered.
How Properties Are Valued for ATED
For many current ATED periods, the key valuation date is 1 April 2022.
This valuation date generally applies to:
- 2023/24
- 2024/25
- 2025/26
- 2026/27
- 2027/28
If the property was acquired after 1 April 2022, the acquisition date is usually used instead.
Professional valuation support can be useful where:
- The property is close to an ATED threshold
- Significant renovations have taken place
- The property is mixed-use
- Multiple dwellings are involved
- Ownership structures are complex
Using the wrong valuation can lead to underpayment, overpayment, HMRC enquiries or penalty exposure.
Common ATED Mistakes
1. Missing the 30-Day Acquisition Deadline
This is the key issue for companies buying property after 1 April.
A newly acquired residential property may need an ATED return within 30 days of acquisition. Waiting until the next 30 April deadline can result in a late return.
2. Assuming Rental Properties Are Automatically Exempt
Commercially let residential properties may qualify for relief, but that does not always remove the filing requirement.
A Relief Declaration Return may still be needed.
3. Forgetting to File Because No Tax Is Due
ATED is not only about paying tax. It is also about making the correct filing.
Companies can face penalties where a required return is not submitted on time, even if relief reduces the tax bill to nil.
4. Using the Wrong Valuation Date
Businesses may incorrectly use the current market value rather than the correct ATED valuation date.
For many current periods, the relevant valuation date is 1 April 2022, unless a later acquisition date applies.
5. Confusing Reliefs with Exemptions
Reliefs and exemptions have different filing consequences.
A relief may reduce the charge, while an exemption may remove the property from the ATED regime altogether.
6. Leaving Payment Too Late
Where ATED is payable, payment is normally due by the filing deadline.
If the payment deadline falls on a weekend or bank holiday, payment may need to reach HMRC earlier.
ATED Penalties
HMRC can charge penalties for:
- Late filing
- Late payment
- Inaccurate returns
Possible late filing penalties can include:
| Delay | Possible penalty |
| One day late | £100 |
| More than 3 months late | Daily penalties may apply |
| More than 6 months late | Additional penalties may apply |
| More than 12 months late | Further penalties possible |
Penalties can apply even where little or no ATED is ultimately payable.
This is why newly acquired properties should be reviewed as soon as possible after completion.
What Should You Do After Buying a Company-Owned Residential Property?
If your company has bought a UK residential property worth more than £500,000, do not wait until the next annual ATED deadline.
You should promptly check:
- Was the property acquired after 1 April?
- Is the property residential or partly residential?
- Is the value above £500,000?
- Is the owner a company or relevant corporate structure?
- Does the 30-day acquisition deadline apply?
- Is ATED payable?
- Does relief apply?
- Is a Relief Declaration Return needed?
- Has the correct valuation date been used?
The earlier this review is carried out, the easier it is to avoid missed deadlines.
For wider support with tax planning around company-owned property, CRM can provide tax planning advice tailored to your business and ownership structure.
What if the 30-Day Deadline Has Already Been Missed?
If you think a deadline has already been missed, it is usually better to review the position sooner rather than later.
Delaying further can increase penalty exposure.
A review should consider:
- Whether an ATED return was required
- Whether relief was available
- Whether a Relief Declaration Return should have been submitted
- Whether any ATED is payable
- Whether penalties or interest may apply
- Whether a disclosure or late filing should be made to HMRC
Even where no tax is due, it is still important to correct the filing position.
How CRM Can Help with ATED
If your company has acquired UK residential property, we can help you understand whether ATED applies and whether the 30-day filing deadline has been triggered.
We can help you:
- Check whether the property is within ATED
- Confirm the relevant filing deadline
- Determine whether relief is available
- Prepare ATED returns or Relief Declaration Returns
- Review valuation dates and property bands
- Reduce the risk of HMRC penalties
- Correct missed filings where needed
- Stay compliant year after year
Contact us today for a friendly discussion about how we can support you.
Frequently Asked Questions
Can ATED apply if a property is owned by a company but used by a director or shareholder?
Yes. If a company owns a UK residential property worth more than £500,000 and it is available for personal use by a director, shareholder or connected person, ATED may apply and relief may not be available. The position should be reviewed carefully.
Is the ATED return separate from the company tax return?
Yes. ATED is dealt with separately from the company’s corporation tax return. A company should not assume that its ATED position has been covered just because the property appears in its accounts or tax computations.
Does SDLT affect whether ATED applies?
SDLT and ATED are separate regimes. A property purchase may have SDLT implications at completion, while ATED can create separate annual filing and payment obligations for company-owned residential property.
Can ATED apply to more than one property owned by the same company?
Yes. Each property should be reviewed individually to check whether it falls within ATED, what value band applies and whether relief is available. In some cases, one Relief Declaration Return may cover multiple properties where the same relief applies.
Should a company keep evidence to support an ATED relief claim?
Yes. Companies should keep records showing why relief was available, such as tenancy agreements, business use evidence, valuations and details of any changes in use. This can help support the company’s position if HMRC asks questions later.
