Understanding SDLT Higher Rates: Condition A for Additional Dwellings Over £40,000

When the £40,000 threshold triggers higher SDLT rates for an additional dwelling

The £40,000 rule is a gateway test for the higher rates of SDLT on an additional dwelling. The key question is whether the chargeable consideration for the interest being bought is at least £40,000. If it is below that amount, this condition is not met. If it is £40,000 or more, you must still check the other higher-rates conditions before deciding whether the higher rates apply.

• The test looks at the chargeable consideration for the single dwelling interest being acquired, not automatically the value of the whole property.
• If only a share in a property is bought, the £40,000 threshold is applied to the value of that share alone.
• The £40,000 figure is not a tax-free allowance or 0% SDLT band.
• If the higher rates do apply, they apply to the whole chargeable consideration, not just the amount above £40,000.
• This point often matters in low-value purchases, part-share acquisitions, and transfers between co-owners.
• Meeting the £40,000 threshold only satisfies one condition and does not by itself confirm that the higher SDLT rates apply.

Scroll down for the full analysis.

When the £40,000 threshold triggers the higher SDLT rates for an additional dwelling

This page explains one of the basic gateway conditions for the higher rates of Stamp Duty Land Tax on additional dwellings. The rule is simple in outline but often misunderstood: the higher rates do not apply unless the chargeable consideration for the purchase of a single dwelling is at least £40,000. That threshold applies to the interest being acquired, not necessarily to the value of the whole property.

What this rule is about

The higher SDLT rates for additional dwellings only apply if certain conditions are met. This page deals with one of those conditions, known in HMRC’s manual as Condition A.

Condition A asks a straightforward question: is the chargeable consideration for the purchase of the single dwelling £40,000 or more?

If the answer is no, the transaction is not a higher rates transaction under this condition. If the answer is yes, this condition is met and you then need to consider the other higher-rates conditions as well.

What the official source says

HMRC states that Condition A is satisfied where the chargeable consideration for the purchase of a single dwelling is equal to or more than £40,000.

The manual also makes two important points:

• If the buyer acquires only a share in a property, the £40,000 test is applied to the value of the interest acquired, not to the total value of the whole property.
• The £40,000 figure is not a tax-free slice, allowance, or 0% band. If the consideration is £40,000 or more and the higher rates apply, they apply to the whole of the chargeable consideration.

What this means in practice

The threshold is a gateway test, not a partial relief.

That matters because people sometimes assume that only the amount above £40,000 is relevant. That is not how this rule works. The question is simply whether the consideration reaches £40,000. Once it does, this condition is met in full.

The rule is especially important where:

• the property is low in value
• only a partial interest is being bought
• co-owners are buying or transferring shares between themselves
• someone is acquiring a fractional interest in a dwelling that is worth much more overall

In those cases, you should focus on what is actually being acquired for SDLT purposes, and what the chargeable consideration is for that acquisition.

How to analyse it

A sensible way to approach this point is:

• Identify whether the transaction is the purchase of a single dwelling for the purposes of the higher-rates rules.
• Work out the chargeable consideration for the interest being acquired.
• If only a share is being bought, ignore the full market value of the whole property and test the value of the acquired interest instead.
• Ask whether that consideration is less than £40,000 or at least £40,000.
• If it is at least £40,000, Condition A is met. You must then consider the other conditions for the higher rates rather than assuming the higher rates automatically apply.
• If the higher rates do apply, apply them to the whole chargeable consideration, not just the excess over £40,000.

The key point is that this rule does not by itself decide the whole SDLT outcome. It only determines whether this particular threshold condition is satisfied.

Example

Illustration 1: A buyer purchases a 25% share in a dwelling. The whole property is worth £300,000, but the interest acquired is worth £75,000. For this condition, the relevant figure is £75,000, not £300,000. Condition A is therefore met.

Illustration 2: A buyer purchases a small share in a dwelling for £30,000. Even if the whole property is worth much more, Condition A is not met because the interest acquired is below £40,000.

Illustration 3: A buyer purchases a dwelling for £50,000 and the other higher-rates conditions are also met. The higher rates, if applicable, apply to the full £50,000 chargeable consideration, not just to £10,000.

Why this can be difficult in practice

The main difficulty is that readers often confuse three different ideas:

• the value of the whole property
• the value of the interest actually acquired
• the way SDLT bands normally work

This rule uses the value of the acquired interest, not the full property value where only a share is bought. It also does not operate like an ordinary tax band. The £40,000 figure is a threshold for entering the higher-rates regime, not a slice taxed at 0%.

Another practical difficulty is that meeting this condition does not settle the wider higher-rates analysis. A transaction can satisfy the £40,000 threshold but still require further work on the other statutory conditions before deciding whether the higher rates actually apply.

Key takeaways

• The higher rates cannot apply unless the chargeable consideration for the single dwelling is at least £40,000.
• Where only a share is acquired, test the value of that share, not the value of the whole property.
• The £40,000 threshold is not a tax-free band; if the higher rates apply, they apply to the whole chargeable consideration.

This page was last updated on 24 March 2026

Useful article? You may find it helpful to read the original guidance here: Understanding SDLT Higher Rates: Condition A for Additional Dwellings Over £40,000

View all HMRC SDLT Guidance Pages Here