To do that, you need to access the HMRC ATED login portal, register your business, and submit your return through the ATED online service. The process is straightforward once you understand what is required, but missing key steps or deadlines can result in significant penalties.
This guide walks you through everything you need to know, from who needs to register to how the HMRC ATED online service works and what to do once you are logged in.
Who Does ATED Apply To?
Annual Tax on Enveloped Dwellings is a tax that applies to UK residential properties held within a corporate structure. If your property is "enveloped", meaning it is owned by a company rather than an individual, ATED may apply.
Specifically, ATED applies to:
- Companies
- Partnerships that have at least one corporate partner
- Collective investment schemes
The property must be a UK residential property valued at more than £500,000 for ATED to apply. If your property falls below this threshold, you do not need to register.
Why the HMRC ATED Login Matters
Your HMRC ATED login gives you access to the online service used to manage your ATED obligations. Once registered and signed in, you can submit chargeable returns, file Relief Declaration Returns, appoint an agent, save draft returns, view or amend submitted returns, and receive a payment reference when you file online.
To file ATED returns online, you must register for the ATED service first. HMRC expects ATED returns to be handled through the ATED online service, although paper forms may still be available in limited cases where online filing is not possible, so it is best to set up your login well before the deadline.
Who needs to register for the ATED online service?
You should register for the HMRC ATED online service if you are a company, a partnership with a company member, or a collective investment scheme that owns a UK residential property valued at more than £500,000 and is within the scope of ATED. This applies to both UK-based and overseas entities. HMRC’s current guidance also makes clear that an overseas entity without an HMRC UTR can still register for the ATED online service and submit returns, so there is no need to wait for a UTR before starting the process.
What you need before you start ATED Online Service
Before starting your HMRC ATED login or ATED registration, make sure you have the right details ready. This will help you complete the process faster and reduce errors.
For registration, you may need:
- Your registered business name
- Your HMRC sign-in details
- Your Unique Taxpayer Reference (UTR), if you have one
For filing an ATED chargeable return, you will usually need:
- The full address of the property
- The date the property was acquired
- The market value of the property
- The valuation date
- The property's title number
Note
Some businesses, including certain overseas entities, may still be able to register even if they do not yet have a UTR If you are filing a Relief Declaration Return, you generally do not need to provide the property value or full property details
Having these details ready before you begin can make your ATED return process much smoother.
How to Register for the ATED Online Service
Registering as a business
If you are registering as a company or other entity, you will need to sign in or create Government Gateway credentials. Each business must have its own separate ATED account, and you cannot use one login for multiple entities. If you have more than one business with enveloped properties, you must register each one separately.
Once registered, you can submit ATED returns or appoint an agent to act on your behalf.
Register for the Annual Tax on Enveloped Dwellings online service - GOV.UK
Registering as an agent
If you are an accountant or tax adviser, you must register your agency separately for the ATED service.
Steps include:
- Register using your agency name and UTR (if available)
- Add your clients to your account
- Receive a unique authorisation number
- Share this with your client so they can appoint you
If multiple staff handle ATED, you can add administrators to your account.
Overseas businesses without a UTR
If your business is based overseas and does not have a UK UTR, you can still register for the ATED service or appoint an agent.
If appointing an agent, you must complete an ATED1 form, which authorises them to act on your behalf. A sample of ATED1 Form is given below:
Authorise HMRC to deal with your agent for Annual Tax on Enveloped Dwellings
Understanding the Two Types of ATED Return
When using the HMRC ATED online service, it is important to understand the difference between the two types of ATED returns you may need to submit.
A chargeable return is required when your property is within the ATED regime, and a tax charge applies. When you submit this return, HMRC calculates the amount of tax due based on the property value and other details provided. You will receive an instant payment reference number after submission, which is used to pay the tax.
The ATED online service allows you to save a chargeable return as a draft for up to 60 days, giving you time to review and complete it before submission. If you cannot use the online service, you may submit a paper return using ATED51 (Chargeable Return).
Further returns
If circumstances change after you have submitted your ATED return, you may need to file a further return. This typically applies where your tax position increases, for example:
- You are no longer eligible for a relief
- A property becomes chargeable during the period
In such cases, HMRC requires a further return to be submitted:
- Within 30 days of the change, or
- By 30 days after the end of the chargeable period, depending on timing
This ensures that any additional ATED liability is correctly reported and paid. Failure to submit a further return on time may result in penalties and interest.
How Property Valuation Works for ATED
Getting the property valuation right is essential, as it determines whether ATED applies and which tax band you fall into.
The valuation must reflect the open market value of the property at a specific date, assuming a sale between a willing buyer and seller. It must be a single definite figure in pounds sterling, not a range.
Valuation dates
Initial valuation:
- If owned on or before 1 April 2012, use 1 April 2012
- If acquired later, use the date of acquisition
Revaluation:
- Properties must be revalued every 5 years
- The current cycle is based on 1 April 2022 values (for 2023–2028 chargeable periods)
- If acquired after 1 April 2022, use the acquisition date
You can value the property yourself or use a professional valuer. If the property is not owned outright, the valuation should reflect the interest you hold, not necessarily full vacant possession.
ATED Filing Deadlines
ATED is unusual compared to most UK taxes because it is forward-looking. The return covers the chargeable period from 1 April to 31 March, and it must be filed at the start of that period rather than at the end.
The standard deadlines are:
- Annual deadline: 30 April each year for properties within the ATED regime on 1 April
- New acquisitions: Within 30 days of acquisition if the property is acquired during the chargeable period and falls within ATED
- Newly built properties: Within 90 days of the property becoming a dwelling for Council Tax purposes or first being occupied, whichever is earlier
For the 2025 to 2026 chargeable period, the deadline for filing and payment was 30 April 2025. For the 2026 to 2027 chargeable period, the deadline is 30 April 2026.
Note
Missing these deadlines can result in late filing penalties and interest charges, so it is important to act well in advance.
Step-by-Step: How to Submit Your ATED Return Online
Once you have registered and have your HMRC ATED login details, you can submit your return through the online service.
Step 1 - Sign in to the ATED online service
Go to the ATED online service on GOV.UK and sign in using your Government Gateway credentials. If you are an agent, sign in using your agent account and select the relevant client.
Step 2 - Choose the type of return
Select whether you are submitting a:
Chargeable Return (if tax is due), or
Relief Declaration Return (if a relief applies and no tax is payable)
Step 3 - Enter the required details
For a chargeable return, enter property details such as the address, valuation, and valuation date
For a Relief Declaration Return, you will generally provide less detailed information, focusing on the relief being claimed rather than full property valuation
Note:
HMRC may still require some basic information to identify the property or relief, so it is not strictly “no details”
Step 4 - Confirm relief or review tax calculation
- For a chargeable return, the system will calculate the ATED charge automatically based on the valuation band
- For a relief return, select the relevant relief category (e.g. rental business, developer, etc.)
Step 5 - Review and submit
Check all information carefully before submitting. Once submitted:
You will receive a submission confirmation
If tax is due, you will get an instant payment reference number
Step 6 - Pay any tax due
If a chargeable return applies, you must pay the ATED liability by the deadline. Payment can be made via:
Online banking
Bank transfer
Other HMRC payment methods
Late payment may result in interest and penalties.
Common Mistakes to Avoid in ATED
Missing the registration requirement: Some companies are unaware they need to register separately before they can submit. Allow enough time to register, particularly if you are doing it for the first time.
Filing late because of valuation delays: The valuation must be in place before you can file a chargeable return. If you are commissioning a professional valuer, instruct them well ahead of the April deadline.
Using the wrong valuation date: Using a current market appraisal rather than the correct ATED valuation date is a common error. Make sure you are using either the acquisition date or the relevant revaluation date.
Forgetting to submit a Relief Declaration Return: Even if no tax is payable because of a valid relief, you are still required to file. Failing to do so can lead to penalties.
Multiple businesses sharing one login: HMRC requires each entity to have its own separate sign-in credentials. Using one login across multiple businesses is not permitted.
A Practical Example
Suppose a UK property investment company acquired a residential flat in London in 2019 for £1.5 million and lets it commercially. Because the property was acquired after 1 April 2012, the initial valuation date is the date of acquisition. For the current ATED revaluation cycle, the company must use the market value as of 1 April 2022 (as it owned the property before that date). If the property was valued at £1.8 million on that date, it falls within the £1 million to £2 million band, and the ATED charge for the 2025 to 2026 chargeable period would be £9,150, based on HMRC’s published bands.
However, because the property is let to a third party on a commercial basis, the company is likely to qualify for property rental business relief. In that case, no ATED is payable, but the company must still submit a Relief Declaration Return by 30 April each year. If you want to understand how different reliefs apply and whether your property qualifies, you can explore our detailed guide on ATED reliefs and exemptions.
Conclusion
Accessing the HMRC ATED login and using the ATED online service is a core compliance requirement for any company, partnership with a corporate member, or collective investment scheme owning UK residential property valued at more than £500,000. The process requires you to register your business on the ATED online service, determine whether you need to submit a chargeable return or a Relief Declaration Return, use the correct valuation date for your property, and file by 30 April each year. If you acquired your property on or before 1 April 2022, your revaluation date is 1 April 2022. If you acquired it after that date, use the date of acquisition.
Even if no tax is due because a relief applies, you are still required to file a Relief Declaration Return. Failing to file at all is a common and costly mistake. If you are unsure about your obligations, working with a specialist property accountant or tax adviser can help ensure your return is accurate, filed on time, and that any available reliefs are properly claimed.
Frequently Asked Questions
Yes. ATED runs by chargeable period from 1 April to 31 March, and HMRC requires a return for each relevant period. If relief applies, you still normally file a Relief Declaration Return for that period.
HMRC can charge late filing penalties and interest on late payment. HMRC’s penalties guidance also says late payment of ATED can trigger additional failure-to-pay penalties.
Yes. HMRC says you can submit or change an ATED return through its returns process, and the Returns Notice includes rules on amended returns.
HMRC treats a property as residential if it is a dwelling, meaning it is used or suitable for use as a residence, or is being constructed or adapted for that use.
Potentially, yes. ATED depends on whether the property is within the ATED rules, not simply whether someone is living in it. Relief may still be available in some commercial situations, depending on the facts.
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