Higher Rate Stamp Duty for Non-Natural Persons Increased to 17% from 2024

Pre-21 March 2012 Contracts and the Higher SDLT Rate for Non-Natural Persons

A residential property purchase by a company or other non-natural person may escape the higher SDLT rate if the contract was made before 21 March 2012. However, that protection can be lost if the deal was changed, assigned, or restructured on or after that date, so the full transaction history must be checked.

• The higher SDLT rate does not apply if the contract was entered into and substantially performed before 21 March 2012.
• If the contract was entered into before 21 March 2012 but completed later, the protection usually remains unless a disqualifying event happened after 20 March 2012.
• Disqualifying events include varying the contract, assigning rights under it, exercising an option or pre-emption right, or a sub-sale type arrangement where another person becomes entitled to the transfer.
• In practice, it is not enough to check the original contract date; you must also review whether the buyer changed or the legal or commercial structure was altered after 20 March 2012.
• For certain partnership deemed land transactions, the key date is the effective date of the partnership’s original acquisition; if that was before 21 March 2012, the higher rate does not apply.
• The separate increase in the higher rate from 15% to 17% on 31 October 2024 is a different issue from this pre-2012 transitional rule.

Scroll down for the full analysis.

When the higher SDLT rate for certain non-natural persons does not apply because of pre-21 March 2012 contracts

This page explains the transitional rule for the higher SDLT charge on some purchases of residential property by certain non-natural persons. The point of the rule is to stop the higher rate applying retrospectively to older transactions that were already in train before 21 March 2012, unless something important changed after that date.

What this rule is about

SDLT includes a higher rate charge for acquisitions of residential property by certain non-natural persons. The HMRC material here deals with the transitional position when that charge was introduced.

The basic question is whether an acquisition is protected by the fact that the contract was entered into before 21 March 2012. If it is, the higher rate does not apply. But that protection can be lost if the transaction was changed, assigned, or otherwise restructured on or after 21 March 2012.

The source also notes that the higher rate itself increased from 15% to 17% on 31 October 2024. That change is separate from the pre-2012 transitional rule, but it matters if you are considering what rate would apply where the higher charge is in point.

What the official source says

According to the HMRC manual, the higher rate charge does not apply in either of these situations:

• the contract was entered into and substantially performed before 21 March 2012, or
• the contract was entered into before 21 March 2012, unless one of the specified post-21 March 2012 events occurred.

The specified events are:

• a variation of the contract on or after 21 March 2012,
• an assignment of rights under the contract on or after that date, called an assignation in Scotland,
• the transaction being carried out because an option, right of pre-emption, or similar right was exercised on or after that date, or
• an assignment, sub-sale, or similar transaction on or after that date under which someone other than the original purchaser becomes entitled to call for a conveyance of all or part of the property.

The source also deals with certain deemed land transactions involving partnerships under Schedule 15. A deemed land transaction arising from a transfer of a partnership interest, or from a withdrawal of money from the partnership following an acquisition by the partnership, is not subject to the higher rate if the effective date of the partnership’s acquisition was before 21 March 2012.

What this means in practice

The rule is aimed at grandfathering older arrangements. If a residential purchase by a relevant non-natural person was already contractually committed before 21 March 2012, the higher rate will usually not apply just because completion happened later.

But the protection is not unlimited. If the transaction was materially changed or re-routed on or after 21 March 2012, the higher rate can still apply. The legislation and HMRC guidance focus on events that suggest the later transaction is no longer simply the original pre-21 March 2012 bargain being completed.

In practice, this means you should not look only at the date of the original contract. You also need to check whether anything happened after 20 March 2012 that altered the legal or commercial position.

This is especially important where:

• the buyer changed,
• rights under the contract were transferred,
• the land was sold on before completion,
• an option or pre-emption right was exercised after 20 March 2012, or
• the terms of the contract were varied after that date.

If one of those events occurred, the old contract may no longer shelter the acquisition from the higher rate.

How to analyse it

A sensible way to approach this issue is to work through the transaction in stages.

1. Identify whether the higher rate regime is potentially relevant at all.

   This page assumes you are dealing with an acquisition of residential property by a person within the non-natural persons regime. If that regime is not engaged, this transitional rule may not matter.

2. Check the date the contract was entered into.

   If the contract was entered into on or after 21 March 2012, this transitional protection does not apply.

3. Ask whether the contract was substantially performed before 21 March 2012.

   If it was both entered into and substantially performed before that date, the HMRC material says the higher rate does not apply.

4. If the contract was entered into before 21 March 2012 but not substantially performed before then, check for later disqualifying events.

   The main questions are whether there was a variation, assignment, exercise of an option or pre-emption right, or a sub-sale or similar arrangement under which another person became entitled to call for the conveyance.

5. For partnership cases, focus on the effective date of the partnership’s acquisition.

   If the deemed land transaction arises under the specified partnership rules, the key date is the effective date of the acquisition by the partnership. If that was before 21 March 2012, the higher rate does not apply to the deemed transaction described in the source.

Example

Illustration: a company exchanged contracts to buy a dwelling on 1 February 2012, with completion due later. If nothing changed after that and the later completion simply gave effect to the original contract, the transitional rule may prevent the higher rate from applying.

Now change the facts slightly. Suppose that after 21 March 2012 the company assigned its rights under the contract to another company in the same group, and that new company became entitled to call for the transfer. On the HMRC approach set out in the source, that post-21 March 2012 assignment means the transitional protection may be lost, so the higher rate can come back into play.

Why this can be difficult in practice

The difficult part is often deciding whether what happened after 20 March 2012 was truly a variation or assignment of the kind covered by the rule, or whether it was merely an administrative step in implementing the original bargain.

The source itself is brief. It identifies the events that matter, but it does not spell out every borderline case. For example, whether a later amendment is a genuine variation, and whether a later arrangement amounts to a sub-sale or similar transaction, can depend heavily on the documents and the sequence of events.

Partnership cases can also be technical. The source refers to deemed land transactions under specific Schedule 15 provisions. In those cases, the charge does not arise from an ordinary conveyance in the usual way, so it is important to identify exactly which deemed transaction is being tested and what the effective date of the partnership’s original acquisition was.

There is also a timing issue in the background. The source mentions that the higher rate increased from 15% to 17% on 31 October 2024, and points to separate guidance on transitional rules for that increase. That is a different transitional question from the one considered here. So it is possible to have one set of issues about whether the higher rate applies at all, and another about which higher rate applies.

Key takeaways

• A pre-21 March 2012 contract can protect a transaction from the higher SDLT rate for certain non-natural persons, but only if later events do not displace that protection.
• Post-21 March 2012 variations, assignments, option exercises, and sub-sale type arrangements are the main triggers that can bring the higher rate back into point.
• For specified partnership deemed transactions, the key question is whether the partnership’s original acquisition had an effective date before 21 March 2012.

This page was last updated on 24 March 2026

Useful article? You may find it helpful to read the original guidance here: Higher Rate Stamp Duty for Non-Natural Persons Increased to 17% from 2024

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