Guide on SDLT for Multiple Dwellings Transfers and Remaining Consideration

How SDLT on Remaining Consideration Worked Under Multiple Dwellings Relief

Under the old multiple dwellings relief (MDR) rules for SDLT, where a transaction included both dwellings and non-dwelling elements, the non-dwelling part of the price, called the remaining consideration, was not taxed separately in the usual way. Instead, you first worked out the SDLT on the whole transaction as if MDR did not apply, then took the proportion of that tax matching the remaining consideration, and added it to the MDR calculation for the dwellings part.

• MDR was abolished for transactions completing, or substantially performed, on or after 1 June 2024, although transitional rules may still preserve it in some cases.
• The total consideration had to be split between the dwellings element and the remaining consideration for non-dwelling land, buildings, or rights.
• SDLT on the remaining consideration was based on its share of the hypothetical SDLT on the full unrelieved price, not by applying SDLT rates directly to that balance alone.
• The final SDLT liability was the MDR amount for the dwellings plus the proportionate amount of SDLT attributed to the remaining consideration.
• Correct apportionment was important, because any error in dividing the price between dwellings and non-dwellings would affect the overall tax calculation.
• Mixed transactions and linked transactions could be harder to assess, especially where transitional rules or valuation judgments were involved.

Scroll down for the full analysis.

How the “remaining consideration” works in multiple dwellings relief for SDLT

This page explains a technical part of the old multiple dwellings relief rules for Stamp Duty Land Tax. It deals with cases where a transaction included both dwellings and something else, so only part of the price was allocated to the dwellings. The key point is that the SDLT on the non-dwelling part, called the remaining consideration, was not worked out in the normal way. A special calculation had to be used.

What this rule is about

Multiple dwellings relief, often called MDR, was a relief that could reduce SDLT where a buyer acquired more than one dwelling in a single transaction, or in linked transactions that qualified. In some transactions, not all of the consideration related to dwellings. Part of the price might relate to other land, buildings, or rights that did not fall within the dwellings element.

In those cases, the legislation split the total consideration into two parts:

• the consideration apportioned to the dwellings, and
• the remaining consideration.

This page is about how to calculate SDLT on that remaining consideration.

This matters because a buyer might assume that once the dwellings part has been dealt with under MDR, the rest of the price is simply taxed by applying SDLT rates directly to that balance. The official material says that is not the correct method.

What the official source says

The official source states that MDR has been abolished for transactions completing, or substantially performed, on or after 1 June 2024, subject to transitional rules. It also notes that there are special transitional rules for linked transactions.

For transactions where MDR still applies, the source says SDLT on the remaining consideration is not calculated by simply applying the relevant rates to that amount.

Instead, the method is:

• first calculate the SDLT that would have been due on the total consideration if there were no MDR claim at all;
• then identify the proportion of that amount that corresponds to the remaining consideration, by comparing the remaining consideration with the total consideration;
• then add that figure to the SDLT calculated on the consideration apportioned to the dwellings.

So the remaining consideration bears a proportionate share of the SDLT that would have arisen on the whole transaction without MDR.

What this means in practice

This is a blended calculation. You do not treat the non-dwelling part as a separate purchase and tax it in isolation. Instead, you start with a hypothetical tax calculation on the whole transaction without relief, then carve out a proportion of that tax by reference to the share of the total price represented by the remaining consideration.

That approach can produce a different result from a simple direct rate calculation on the remaining consideration alone. In some cases the difference may be material, especially where the total consideration pushes the transaction into higher SDLT bands.

In practical terms, the process has two strands:

• calculate the MDR tax result for the dwellings part; and
• calculate the non-dwellings element by using a proportion of the hypothetical SDLT on the full, unrelieved total consideration.

The final SDLT liability is the sum of those two amounts.

This means that a correct apportionment of the total consideration is important. If the amount attributed to the dwellings is wrong, the remaining consideration will also be wrong, and that affects the final tax result.

How to analyse it

A sensible way to approach this issue is to ask the following questions.

• Does MDR apply at all? This now depends heavily on timing, because MDR was abolished for transactions completing, or substantially performed, on or after 1 June 2024, unless transitional rules preserve it.
• If MDR can still apply, what amount of the total consideration is apportioned to the dwellings?
• What amount is left as the remaining consideration?
• What would the SDLT have been on the total consideration if there had been no MDR claim?
• What proportion of that hypothetical SDLT corresponds to the remaining consideration, based on its share of the total consideration?
• What SDLT is due on the dwellings element under the MDR calculation?
• Have those two figures then been added together to produce the total SDLT?

The key discipline is not to skip the hypothetical whole-transaction calculation. That is the step the official material requires.

Example

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

Assume a transaction qualifies for MDR under the transitional rules. The total consideration is £1,000,000. Of that, £800,000 is apportioned to the dwellings and £200,000 is the remaining consideration.

Step 1: work out the SDLT due on the £800,000 dwellings element using the MDR rules.

Step 2: calculate the SDLT that would have been due on the full £1,000,000 if there were no MDR claim.

Step 3: identify the proportion of that hypothetical full-tax amount attributable to the remaining consideration. Here, the remaining consideration is 20% of the total price, because £200,000 is 20% of £1,000,000.

Step 4: take 20% of the hypothetical full-tax amount from step 2.

Step 5: add that figure to the MDR result from step 1.

That total is the SDLT due.

The important lesson from the example is that the £200,000 remaining consideration is not taxed by simply applying SDLT rates to £200,000 on a standalone basis.

Why this can be difficult in practice

The source is brief, but several practical issues can make this area difficult.

• Timing matters. MDR has been abolished for most later transactions, so the first question is often whether transitional rules keep the relief alive.
• Apportionment matters. The calculation depends on dividing the total consideration between dwellings and non-dwellings elements. That can be straightforward in some cases and highly judgement-based in others.
• The method is counterintuitive. Many readers expect each part of the consideration to be taxed directly by reference to its own amount. The official rule instead uses a proportion of the tax on the whole transaction.
• Linked transactions may need special care. The source flags separate transitional rules for linked transactions, which can affect whether MDR remains available.

Where the transaction structure is mixed or the allocation of consideration is not obvious, the arithmetic only works properly once the legal and factual character of each element has been settled.

Key takeaways

• For transactions where MDR still applies, SDLT on the remaining consideration is not calculated as a separate standalone charge.
• You must first calculate the hypothetical SDLT on the full consideration with no MDR, then take the proportion that matches the remaining consideration.
• MDR was abolished for transactions completing, or substantially performed, on or after 1 June 2024, subject to transitional and linked-transaction rules.

This page was last updated on 24 March 2026

Useful article? You may find it helpful to read the original guidance here: Guide on SDLT for Multiple Dwellings Transfers and Remaining Consideration

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