MDR and stamp duty on a block of flats: the old choice explained
The short answer
Before 1 June 2024, a buyer of six or more separate homes in one purchase could compare historic multiple dwellings relief with non-residential SDLT rates and choose the permitted result.
- MDR has since been abolished for new purchases.
- Both calculations mattered under the old rules.
- The purchase date and linked-transaction facts are central.
Scroll down for the full analysis.
Read the original guidance here:
MDR and stamp duty on a block of flats: the old choice explained
MDR and stamp duty on a block of flats: the old choice explained
Multiple dwellings relief, often called MDR, no longer applies to new purchases. If you bought several homes before 1 June 2024, it may still matter a great deal.
For a single purchase of six or more homes, the old rules could offer a choice between two stamp duty calculations.
What this rule is about
MDR was the relief available when more than one home was bought at once, or through linked purchases. It involved finding the average price per home, calculating stamp duty on that average, and then multiplying the result by the number of homes.
This could reduce the bill. A large single purchase also offered another route.
Where six or more separate homes were bought together in one transaction, SDLT could treat them as non-residential property. Instead, the buyer could use the non-residential rates.
The key point is simple: this was a choice. MDR did not automatically produce the lower result.
What the official source says
HMRC’s manual says MDR was abolished where a purchase completed, or was substantially performed, on or after 1 June 2024. Its guidance on this topic therefore applies only to an earlier purchase.
- Historic MDR could apply where two or more homes were bought in one purchase.
- It could also apply to linked purchases involving two or more homes.
- Six or more separate homes in one purchase could be treated as non-residential property.
- For this type of purchase, the buyer could claim historic MDR or choose non-residential rates.
- When MDR applied, the higher SDLT rates could still affect the average-price calculation.
- HMRC’s examples use the former 3% higher rates.
- HMRC says the higher rates rose from 3% to 5% on 31 October 2024.
What this means in practice
If your solicitor has identified an old MDR issue on the purchase of a block of flats, do not stop at the relief calculation. Calculate the non-residential result as well.
Then compare the two.
That comparison matters only if the old relief remained available. Under the position stated in HMRC’s source, a purchase that completed, or was substantially performed, from 1 June 2024 cannot use MDR.
This remains so whatever calculation might otherwise appear favourable. The relief is unavailable.
- First, fix the date when the purchase took effect for SDLT.
- Check whether it was a single purchase or a set of linked purchases.
- Count the separate homes included in the deal.
- For six or more homes in one purchase, calculate both available routes.
- Use the SDLT rates that applied on that historic date.
- Keep the workings and documents that support the calculation chosen.
How to analyse it
Begin with the date. It is the gateway question.
A deal substantially performed before 1 June 2024, rather than merely completed later, may require different treatment under the old rules from one whose relevant SDLT date fell later. Check that date first.
- Did the purchase complete, or become substantially performed, before 1 June 2024?
- Were at least two separate homes bought?
- Were they bought in one deal, or in linked deals?
- Was there one purchase of six or more separate homes?
- Would the higher rates have applied to the historic MDR calculation?
- What is the total under historic MDR?
- What is the total using the non-residential rates?
- Which permitted calculation produces the lower SDLT bill?
What makes purchases linked? The issue is not simply the number of contracts.
The legislation asks whether the same parties, or connected parties, are involved in a single scheme, arrangement or series of transactions. It does not merely look for a collection of contracts signed around the same time.
The facts matter. This can be a fact-heavy question.
Example
HMRC gives this historic example. A company bought ten flats in one deal for £1,000,000. The average price was £100,000 per flat.
Using MDR and the then 3% higher rate, the SDLT was £30,000. The £100,000 average was multiplied by 3%, and that result was then multiplied by ten.
That was the MDR total.
Using the non-residential rates in force for that example, HMRC calculated SDLT of £39,500. The company could choose MDR because it produced the lower figure.
These figures illustrate the former rules, rather than rates to use for a later purchase. The calculations depend on the historic date and rates in force then.
They are historic figures.
Why this can be difficult in practice
People often assume that buying a block of flats always meant using commercial stamp duty rates. That was not the whole story.
Historic MDR could remain available, while the higher rates could still form part of its calculation.
The reverse mistake can be just as costly: assuming MDR always wins. HMRC’s examples show why both calculations must be done.
- The date can decide whether MDR existed at all.
- Substantial performance can matter even before formal completion.
- Not every group of properties is necessarily one linked arrangement.
- Counting separate homes may need care where a building has unusual layouts.
- The higher-rate percentage depends on the date of the purchase.
- HMRC’s manual is guidance, so the legislation remains the starting point.
Key takeaways
- For purchases from 1 June 2024, MDR is not available; it is historic relief.
- For one purchase of six or more homes, compare MDR with non-residential SDLT rates.
- Use the rates and rules that applied when the purchase took effect.
Technical analysis
For advisers, and for anyone who wants to check the law behind this page. You do not need this section to understand the guidance above.
Legislation
- FA 2003 section 58D — multiple dwellings relief and how it was claimed
- FA 2003 Schedule 6B para 2 — purchases that qualified for historic multiple dwellings relief
- FA 2003 Schedule 6B para 5 — historic relief calculation using an average home price
- FA 2003 section 55 — ordinary SDLT rates for residential and non-residential land
- FA 2003 section 108 — when separate property purchases count as linked
- FA 2003 section 116 — six or more homes treated as non-residential
- FA 2003 Schedule 4ZA para 1 — higher SDLT rates for additional homes and companies
- FA 2003 Schedule 4ZA para 7 — higher rates for companies buying two or more homes
Official guidance
The pages below are HMRC’s guidance. Guidance is not law. It sets out how HMRC reads the legislation, and it is not binding on you, on a tribunal or on a court. Where guidance and the legislation differ, the legislation wins. HMRC can also change or withdraw guidance, and it may not cover your facts.
Where this is not settled
- The source does not set out every condition for historic MDR. A claim for an earlier purchase still depends on the legislation in force on its date and the facts.
- A group of purchases may be linked even if there is more than one contract. The answer can turn on the wider scheme or arrangement.
Evidence you would need
This kind of case is decided on the facts of the individual property. These are the records that usually settle it, and the ones an adviser would ask you for.
- completion date and any date of substantial performance
- contracts and details of all related property purchases
- the number of separate homes bought
- the total amount paid and any fair split between properties
- the buyer’s status, including whether it was a company
- the SDLT return and any historic MDR claim
Explore this with an AI
Readers often want to test their own situation. Copy the prompt below into ChatGPT, Claude or Gemini. It hands the model the actual legislation for this page rather than letting it answer from memory, and tells it to be explicit about what is uncertain. What comes back is information, not advice – check it against the links above.
I am researching UK Stamp Duty Land Tax (SDLT), which applies in England and Northern Ireland. MY QUESTION MDR and stamp duty on a block of flats: the old choice explained [Replace this with your own situation: what you are buying, the price, the dates, who the buyer is, and what you plan to do with the property.] THE LAW THIS TURNS ON - FA 2003 section 58D - multiple dwellings relief and how it was claimed https://www.legislation.gov.uk/ukpga/2003/14/section/58D/2025-11-17 - FA 2003 Schedule 6B para 2 - purchases that qualified for historic multiple dwellings relief https://www.legislation.gov.uk/ukpga/2003/14/schedule/6B/paragraph/2/2025-11-17 - FA 2003 Schedule 6B para 5 - historic relief calculation using an average home price https://www.legislation.gov.uk/ukpga/2003/14/schedule/6B/paragraph/5/2025-11-17 - FA 2003 section 55 - ordinary SDLT rates for residential and non-residential land https://www.legislation.gov.uk/ukpga/2003/14/section/55/2025-11-17 - FA 2003 section 108 - when separate property purchases count as linked https://www.legislation.gov.uk/ukpga/2003/14/section/108/2025-11-17 - FA 2003 section 116 - six or more homes treated as non-residential https://www.legislation.gov.uk/ukpga/2003/14/section/116/2025-11-17 - FA 2003 Schedule 4ZA para 1 - higher SDLT rates for additional homes and companies https://www.legislation.gov.uk/ukpga/2003/14/schedule/4ZA/paragraph/1/2025-11-17 - FA 2003 Schedule 4ZA para 7 - higher rates for companies buying two or more homes https://www.legislation.gov.uk/ukpga/2003/14/schedule/4ZA/paragraph/7/2025-11-17 Guidance page from HMRC on this topic (guidance, not law): https://www.gov.uk/hmrc-internal-manuals/stamp-duty-land-tax-manual/sdltm09840 HOW I WANT YOU TO ANSWER 1. Work from the legislation above. Read it before answering. Guidance from HMRC is its view of the law, not the law, and does not bind a tribunal or a court. 2. Tell me what the rule actually requires, in plain English. 3. Tell me which facts decide the answer, and which facts would change it. 4. Tell me what evidence I would need to support the position. 5. Be explicit about anything unsettled or fact-sensitive. Do not guess. 6. Your training data has a cutoff and SDLT rates and reliefs change at fiscal events. Say so if you are not sure the law is current. POINTS ALREADY KNOWN TO BE UNCERTAIN ON THIS TOPIC - The source does not set out every condition for historic MDR. A claim for an earlier purchase still depends on the legislation in force on its date and the facts. - A group of purchases may be linked even if there is more than one contract. The answer can turn on the wider scheme or arrangement. Do not give me a conclusion you cannot support from the provisions above.
Legislation links show Finance Act 2003 as it stood on 2025-11-17. The law may have changed since, and the rules that apply are those in force on the date of your transaction. The official guidance this page is based on is here.
This page was last updated on 1 September 2026
Useful article? You may find it helpful to read the original guidance here: MDR and stamp duty on a block of flats: the old choice explained
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