Understanding Linked Transactions for Stamp Duty Land Tax Compliance and Reporting

When separate land deals are treated as linked for SDLT

For Stamp Duty Land Tax, separate land transactions can be treated as linked if they are really part of one overall deal. If that happens, SDLT is worked out using the total price paid across all linked transactions, which can increase the tax due. Whether transactions are linked depends on the facts, not just on how the paperwork is arranged.

• Transactions may be linked if they form part of a single scheme, arrangement or series of transactions involving the same buyer and seller, or connected persons.
• Using separate contracts, separate lots, or connected family members does not by itself stop transactions from being linked.
• Transactions are not linked just because they involve the same parties or happen one after another; there must be a real connection between them.
• A key question is whether the deals were negotiated or marketed as one package, or whether one transaction affected the terms of another.
• If transactions are linked, SDLT rates are based on the combined consideration, and a later linked transaction can sometimes create extra SDLT on an earlier one.
• If linked transactions have the same effective date, the buyer may choose to report them on a single SDLT return.

Scroll down for the full analysis.

When land transactions are treated as linked for SDLT

This page explains when separate land transactions are treated as “linked transactions” for Stamp Duty Land Tax purposes. This matters because SDLT is then worked out by looking at the total consideration across the linked transactions, not each transaction in isolation. In some cases, that can increase the rate of tax and create extra tax to pay.

What this rule is about

The linked transactions rules are aimed at situations where what appears to be more than one land transaction is really part of one overall deal. The legislation looks beyond the paperwork and asks whether the transactions form part of a single scheme, arrangement or series of transactions.

The rule applies where the transactions are between the same buyer and seller, or where the buyer or seller in one transaction is connected with the buyer or seller in another. The source refers to the connected persons definition in section 1122 of the Corporation Tax Act 2010.

The practical point is simple: if transactions are linked, SDLT is not assessed by looking at each purchase separately. Instead, the tax rate is determined by reference to the total chargeable consideration for all the linked transactions.

What the official source says

HMRC’s manual says linked transactions are transactions that form part of a single scheme, arrangement or series of transactions between the same vendor and purchaser, or connected persons on either side.

It also makes these points:

• Whether transactions are linked is a question of fact.
• A buyer must examine all the circumstances before completing the land transaction return.
• Two transactions are not linked just because they involve the same buyer and seller.
• They will be linked if they are part of the same deal.
• Using separate contracts does not stop transactions from being linked.
• A “series of transactions” means more than one transaction simply happening after another. There must be some connecting factor.
• One thing to consider is whether the first transaction affected the terms of the second.
• If successive transactions are linked, such as the grant of an option and its later exercise, extra tax may become due for the first transaction.
• That extra tax is payable at the same time as the tax on the second transaction.
• Linked transactions with the same effective date may, at the purchaser’s choice, be reported on a single SDLT return and treated as a single notifiable transaction.

The manual also gives an example: if a house and its gardens are marketed together, but the house is bought by a husband and the gardens by his wife, those transactions are treated as linked. The reason is that they are part of one overall arrangement and involve connected purchasers.

What this means in practice

The linked transactions rules stop parties from splitting what is really one deal into smaller pieces in order to reduce SDLT.

In practice, the main effect is on the rate calculation. If transactions are linked, you add together the chargeable consideration for all linked transactions and use that total to determine the SDLT rate. You then apply the linked transactions rules to calculate the tax due on each transaction.

This means a buyer cannot assume that buying land in separate lots, under separate contracts, or through connected family members will keep each transaction in a lower SDLT band. If the facts show that the transactions are really connected parts of one arrangement, they may still be linked.

The rule is not automatic. Separate purchases between the same parties can remain unlinked if they are genuinely independent. The fact that one transaction happened before another is not enough on its own. There must be something tying them together as part of a single scheme, arrangement or series.

The manual also highlights a timing issue. If linked transactions happen one after another, the later transaction can affect the SDLT position on the earlier one. For example, where the grant of an option and its exercise are linked, extra tax can become due on the first transaction once the second happens.

How to analyse it

When deciding whether transactions are linked, the useful question is not “Are there two contracts?” but “Are these really parts of one overall deal?”

A sensible way to analyse the issue is to ask:

• Are the transactions between the same buyer and seller?
• If not, are the buyers or sellers connected with each other?
• Were the properties marketed, negotiated, or agreed as part of one package?
• Would one transaction have happened on the same terms if the other had not happened?
• Did the first transaction affect the pricing or terms of the second?
• Is there evidence of a single scheme or arrangement, even if the documents are separate?
• Are the transactions merely sequential, or is there a real connecting factor?

The source material makes clear that the answer depends on the facts. The buyer must look at the whole picture, including the commercial background, the negotiations, the relationship between the parties, and whether the transactions were interdependent.

If linked transactions have the same effective date, the purchaser may choose to report them on a single return. If that is done, they are treated as a single transaction for notification purposes, and if there is more than one purchaser they are treated as joint purchasers for that purpose.

Example

Illustration: a seller offers a house and adjoining garden land for sale as one overall package. To try to keep the SDLT lower, the house is bought by one spouse and the garden land by the other spouse under separate contracts. Even though the documents are separate and the purchasers are different individuals, the transactions are likely to be linked because they are part of the same overall arrangement and the purchasers are connected persons. The SDLT rate would therefore be determined by the combined consideration for both purchases.

Why this can be difficult in practice

The difficulty is that “linked” is a factual judgement, not a mechanical test. The legislation and HMRC guidance do not say that every transaction between the same parties is linked, and they do not allow parties to avoid linkage simply by using separate contracts or separate buyers who are connected.

The hardest cases are those where there are two genuine-looking transactions close together in time. In those situations, the key issue is whether there is enough connecting them to make them part of a single scheme, arrangement or series. Timing alone is not enough. But if the first deal influenced the second, or both were negotiated as parts of one package, that may point towards linkage.

The source also notes a specific point about exchanges of properties. On an exchange between A and B, A’s acquisition and B’s acquisition are not linked transactions, even if A and B are connected persons, unless all the transactions occurred before 19 July 2007. That is a narrow historical point and should not be treated as a general rule for other arrangements.

Key takeaways

• Separate land transactions can be linked if they are really part of one scheme, arrangement or series of transactions.
• Separate contracts or separate connected buyers do not prevent transactions from being linked.
• If transactions are linked, SDLT is determined by reference to the total consideration across the linked transactions, and later transactions can sometimes create extra tax on earlier ones.

Source: HMRC Stamp Duty Land Tax Manual, SDLTM30100, Application: Linked transactions, referring to FA 2003 section 108 and related provisions.

This page was last updated on 24 March 2026

Useful article? You may find it helpful to read the original guidance here: Understanding Linked Transactions for Stamp Duty Land Tax Compliance and Reporting

View all HMRC SDLT Guidance Pages Here