Annual Tax on Enveloped Dwellings (ATED)

ATED is a nuisance tax you mostly avoid paying as a landlord, but only if you file the right nil-charge return on time each year.

"This guide provides general information about UK landlord tax obligations. It is not financial or legal advice. Tax treatment depends on your individual circumstances and may change. Consider consulting a qualified accountant or solicitor for advice specific to your situation."

1. What ATED is and when it bites

Legal basis: Finance Act 2013 Part 3 and Schedules 33-35.

Who ATED applies to:

"Non-natural persons" that own UK residential property over the threshold, mainly:

• UK and non-UK companies.
• Partnerships with a corporate member.
• Some collective investment schemes.

Scope:

• Residential property in the UK valued at more than GBP 500,000 on the relevant valuation date.
• Chargeable period is 1 April to 31 March each year.

If you hold a London flat worth GBP 800k in a company, you are within ATED, even if it is a normal BTL with a tenant.

2. ATED charge bands for 2025-26 and 2026-27

HMRC's ATED guidance and indexation regulations give the current annual charges.

2025-26 charges (1 April 2025 - 31 March 2026)

2026-27 charges (1 April 2026 - 31 March 2027)

Indexed up by CPI:

Revaluation

• Properties are re-valued for ATED every 5 years. Current regime uses values at 1 April 2022, with the next mandatory revaluation date 1 April 2027.
• If rising prices push a property over GBP 500k on the valuation date, it enters ATED for subsequent years.

3. Reliefs -- especially property rental business relief

There are several reliefs under FA 2013 (eg property rental, development trades, farmhouses, etc.), but for BTL companies the key one is property rental business relief.

You can usually claim full relief (so no ATED charge) if:

• The property is let to a third party on a commercial basis.
• It is not occupied by "non-qualifying individuals" (eg company shareholders or connected persons) except in very limited circumstances.
• The rental business is run on a commercial basis with a view to profit (HMRC is currently writing to companies they think are borderline).

Crucial point:

Relief is not automatic. You must either file:

• A full ATED return showing the charge and claim relief, or
• A Relief Declaration Return confirming that all properties in scope qualify for relief, as allowed in HMRC's returns notice.

If you qualify for relief, ATED is reduced to nil, but the return still has to be lodged.

4. Filing deadlines, valuations and penalties

Filing

• For each chargeable period starting 1 April, an ATED (or relief declaration) return is due by 30 April at the start of that year.
• Example: 2025-26 period (1 April 2025 - 31 March 2026): return and any tax due by 30 April 2025.
• If a property first comes within ATED part-way through a year (eg purchase of a GBP 500k+ resi property by a company), an ATED return must be made within 30 days of that date.

Valuation

• Your ATED valuation is normally self-assessed at the valuation date (1 April 2022 for the current cycle, or acquisition date if later).
• You must keep evidence (valuations, comparable transactions) in case HMRC challenge the band.

Penalties for late filing/payment

Late filing:

• GBP 100 immediately after 30 April deadline.
• Daily penalties after 3 months.
• Further penalties at 6 and 12 months (GBP 300 or 5% of the tax due, whichever higher).

Late payment:

• 5% of unpaid tax at 30 days, further 5% at 6 and 12 months, plus interest.

Even if the tax payable is nil because of relief, late or missing relief returns can still attract fixed penalties for failure to file.

5. Worked example: GBP 800k London flat in a company

Facts:

• UK company owns a single London flat valued at GBP 800,000 at 1 April 2022.
• It is let to an unconnected tenant on a commercial AST, market rent, no shareholder occupation.
• Company is clearly running a commercial property rental business.

Step 1 -- within ATED?

Value over GBP 500k and it is UK residential, so yes, the property is within the ATED regime.

Step 2 -- gross ATED charge (2025-26):

• Value band: more than GBP 500k up to GBP 1m.
• Annual ATED amount without relief (2025-26) = GBP 4,450.

Step 3 -- property rental business relief

Company meets the conditions for property rental business relief:

• Let to third-party tenant, commercial terms, view to profit.
• It can claim full relief, so ATED liability is reduced to nil.

Step 4 -- what must be filed?

Company must file a Relief Declaration Return (or full ATED return claiming relief) by 30 April 2025 for the 2025-26 period.

If they file correctly:

• ATED due: GBP 0.
• No ATED-related CGT issues because the property is used in a qualifying rental business.

6. What if you forget to file but relief applies?

This is where landlords trip up.

Scenario: same 800k flat, but the company has never filed ATED relief returns since buying it in 2022.

HMRC position, as seen in recent letters and guidance:

• HMRC expect ATED returns for every chargeable period in which a property falls within scope.
• If no ATED or relief returns are filed, HMRC can:
• Assume no relief was claimed.
• Treat the full ATED charge as payable for each year, potentially going back several years.
• Charge late filing penalties for each missing return, plus late payment penalties and interest on the unpaid ATED.

Example numbers (rough):

• 2024-25: 4,400
• 2025-26: 4,450
• 2026-27: 4,600
• If HMRC look back three periods, that is around GBP 13,450 ATED they say is due, plus:
• GBP 100+ per year in late filing penalties, quickly escalating if more than 6-12 months late.
• Late payment penalties on the ATED amounts.

You can still argue relief applies retrospectively and file late relief returns, but you will be relying on HMRC to accept the relief and may still face penalties for failing to file on time.

If HMRC decide the property was not genuinely let on a commercial basis (eg effectively a shareholder's private flat with token rent), they can:

• Deny property rental relief.
• Charge full ATED for each year in question.
• Possibly open wider enquiries into CT and shareholder benefits.

7. ATED-related CGT

Originally, ATED-related CGT charged 28% on gains accruing during ATED-chargeable periods for certain companies.

In practice for BTL companies:

• If you always qualify for property rental business relief, you are generally outside ATED-related CGT, because there is no period when the property is "chargeable" for ATED.
• Normal Corporation Tax rules on chargeable gains apply instead.

The logic now is: ATED-related CGT mostly bites on enveloped high-end homes that are not genuinely let, not on straightforward company BTLs that qualify for relief.

8. What forums get wrong about ATED

Common myths:

"I am a BTL company so ATED does not apply." Wrong: if you own UK residential property over GBP 500k, you are within ATED. You avoid the charge by claiming rental business relief, not by ignoring ATED.

"If no ATED is due, there is no need to file anything." Wrong: you must file a relief declaration return each year. HMRC is currently sending letters to companies that look like corporate landlords but have not filed ATED relief returns.

"ATED only applies to super-prime GBP 2m+ mansions." Not since 2015-16. The entry threshold is GBP 500,000, which now easily catches modest London and South-East flats in a company.

"Putting London flats into a company avoids ATED." The corporate wrapper is exactly what triggers ATED. Personal ownership has no ATED, but has Section 24; company ownership has full interest deduction but can bring ATED into play once values cross GBP 500k.

If you already have any resi units in a company that might be over GBP 500k, you should be checking right now whether ATED applies and whether historic relief returns have been filed. Missing a GBP 4-5k charge is not the end of the world, but rolling three-plus years of ATED, penalties and interest because nobody clocked the threshold is a very avoidable own goal.

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