Guide on Tax Relief for Multiple Dwelling Transactions and Calculation Steps

How Multiple Dwellings Relief attributed consideration to dwellings

Multiple Dwellings Relief (MDR) was a special SDLT method for buying more than one dwelling, where the price attributable to the dwellings was averaged across them before tax was calculated. This could reduce SDLT, but the tax on the dwelling element could not fall below 1% of the total dwelling consideration. MDR was abolished for transactions completing, or substantially performed, on or after 1 June 2024, subject to transitional rules.

• Under MDR, you took the total consideration for the dwellings, divided it by the number of dwellings, calculated SDLT on that average at residential rates, then multiplied the result by the number of dwellings.
• If higher residential rates for additional dwellings applied, they were still used in the MDR calculation.
• If the MDR result was equal to or less than 1% of the total consideration for the dwellings, the tax on the dwelling element was instead set at 1% of that amount.
• Where a transaction included non-dwelling property, SDLT on the non-dwelling element had to be calculated separately and added to the tax on the dwellings.
• For linked transactions, the tax attributable to the dwellings was apportioned between the transactions based on each transaction’s share of the dwelling consideration.
• MDR could not be used at the same time as the rule treating six or more dwellings as non-residential property.

Scroll down for the full analysis.

How consideration is attributed to dwellings under Multiple Dwellings Relief

This page explains how SDLT was calculated under Multiple Dwellings Relief when part or all of the price was attributable to dwellings. It matters because the relief changed the way tax was worked out, using an average price per dwelling rather than taxing the whole residential consideration in one block. However, this relief was abolished for transactions that complete, or are substantially performed, on or after 1 June 2024, subject to transitional rules.

What this rule is about

Multiple Dwellings Relief, usually called MDR, was a special SDLT calculation method for transactions involving more than one dwelling. The rule in this material deals with the part of the purchase price that is attributable to the dwellings themselves.

The basic idea was that, instead of applying SDLT to the total price for all the dwellings at once, you first worked out an average price per dwelling. Tax was then calculated on that average amount and multiplied by the number of dwellings.

This could reduce SDLT where several dwellings were bought together, because the tax bands were applied to a lower average figure rather than to the total residential price.

What the official source says

The HMRC manual says that, to calculate the tax attributable to the dwellings:

• take the total chargeable consideration given for all the dwellings,
• divide that amount by the number of dwellings to get an average consideration,
• calculate SDLT on that average using residential rates, including higher rates if they apply,
• multiply that SDLT figure by the number of dwellings.

If there are linked transactions, the tax attributable to the dwellings is then apportioned between the transactions according to each transaction’s share of the total consideration attributable to the dwellings.

The manual also states that there is a minimum tax floor. If the tax produced by the MDR calculation is equal to, or less than, 1% of the total consideration for the dwellings, full relief does not apply. Instead, the tax attributable to the dwellings is treated as 1% of that dwelling consideration.

If the transaction also includes non-dwelling elements, the SDLT attributable to the dwellings is only part of the overall calculation. The SDLT due on the non-dwelling consideration must be calculated separately and added on.

The manual also makes an important interaction point: if MDR is claimed, the rule in FA 2003 section 116(7), which can treat six or more dwellings as non-residential property, does not also apply.

What this means in practice

In practical terms, this is a two-stage exercise.

First, identify how much of the chargeable consideration is attributable to dwellings. That is the amount to which the MDR averaging calculation applies.

Second, calculate any SDLT due on the rest of the consideration separately if the transaction includes non-residential or other non-dwelling elements.

This matters because the MDR calculation does not automatically apply to the whole price unless the whole price is for dwellings. Mixed transactions need a split between dwelling and non-dwelling consideration.

The 1% minimum rule is also important. MDR could reduce SDLT, but not below that floor for the dwelling consideration. So even if the averaging method produced a very low figure, the tax attributable to the dwellings could not fall below 1% of the total consideration for those dwellings.

The higher rates for additional dwellings were still used if they applied. MDR did not switch those off. It only changed the method of calculation.

Finally, a buyer could not combine MDR with the separate rule that treats a purchase of six or more dwellings as non-residential. The legislation required a choice of route, and the manual confirms that if MDR is being claimed, the six-or-more rule does not also apply.

How to analyse it

A sensible way to approach the issue is:

• Check the date first. MDR was abolished for transactions completing, or substantially performed, on or after 1 June 2024, subject to transitional rules.
• Confirm that the transaction involves more than one dwelling and that MDR is in point at all.
• Identify the total chargeable consideration attributable to the dwellings.
• Count the number of dwellings for the purpose of the averaging exercise.
• Divide the dwelling consideration by the number of dwellings to get the average consideration.
• Apply residential SDLT rates to that average figure, including higher rates if applicable.
• Multiply the result by the number of dwellings.
• Check the 1% minimum rule. If the MDR result is equal to or less than 1% of the total dwelling consideration, replace it with 1% of that consideration.
• If there are linked transactions, apportion the dwelling tax across the linked transactions according to each transaction’s share of the dwelling consideration.
• If the transaction includes non-dwelling elements, calculate SDLT on those separately and add that amount to the tax attributable to the dwellings.
• Check whether the buyer is instead looking at the six-or-more-dwellings rule. MDR and that treatment do not apply together.

Example

This is only an illustration of the method described in the source.

A buyer acquires three dwellings in a single transaction. The total chargeable consideration attributable to the dwellings is £900,000. Assume there are no non-dwelling elements.

• Average consideration per dwelling: £900,000 divided by 3 = £300,000.
• Calculate SDLT on £300,000 using residential rates, and higher rates if applicable.
• Multiply that SDLT figure by 3.

If that result is equal to or less than 1% of £900,000, then the tax attributable to the dwellings is instead treated as 1% of £900,000.

If part of the total price related to non-dwelling property, the tax on that part would need to be calculated separately and added.

Why this can be difficult in practice

The main difficulty is often not the arithmetic. It is identifying what amount of the total consideration is properly attributable to the dwellings.

That can be straightforward where the whole transaction is for dwellings only. It can be harder where the purchase includes land, commercial property, common parts, or other assets that are not themselves dwellings.

Linked transactions add another layer of complexity because the tax attributable to dwellings must then be apportioned across the linked transactions by reference to each transaction’s share of the dwelling consideration.

Another practical issue is the interaction with other SDLT rules. A buyer may assume that acquiring six or more dwellings automatically means non-residential treatment applies. But the manual makes clear that if MDR is claimed, that separate rule does not also apply. The correct treatment depends on which statutory route applies and is being used.

The abolition of MDR from 1 June 2024 also means timing now matters. For transactions around that date, the completion and substantial performance rules, and any transitional provisions, may be critical.

Key takeaways

• Under MDR, SDLT on dwellings was calculated by averaging the dwelling consideration across the number of dwellings, then multiplying back up.
• The tax attributable to dwellings could not be reduced below 1% of the total consideration for those dwellings.
• If MDR was claimed, the six-or-more-dwellings non-residential rule did not also apply, and any non-dwelling consideration had to be dealt with separately.

This page was last updated on 24 March 2026

Useful article? You may find it helpful to read the original guidance here: Guide on Tax Relief for Multiple Dwelling Transactions and Calculation Steps

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