Does SDLT increase if leasehold flats are surrendered into the freehold before a mixed-use building is sold?

Introduction

Readers often ask whether stamp duty land tax (SDLT) increases if a seller first collapses separate long leases into the freehold and then sells the whole building as one title. This commonly arises where a mixed-use building contains a commercial unit and residential flats, and the buyer wants a single freehold title on completion.

The main SDLT question is whether HMRC treats the surrender of the leases and the later sale of the freehold as separate taxable events that create an extra SDLT charge, or as part of one overall arrangement. A related issue is whether the transaction is taxed at mixed-use rates where the building includes both commercial and residential property.

The Question

A company owns the freehold of a mixed-use building. The building includes a commercial unit and some residential accommodation. Three further flats in the same building are held under separate long leases owned personally by an individual connected with the company.

A buyer has agreed to purchase the building, but only if the leasehold interests are first surrendered so that the buyer receives the property as a single freehold title. The concern raised is whether bringing those leasehold interests back into the freehold will create a large additional SDLT cost for the buyer.

A further complication is that the leases may need to be surrendered for market value rather than nil consideration because of wider tax consequences for the parties, including capital gains tax and corporation tax.

Nick’s Explanation

Nick’s reasoning was that the SDLT result depends first on whether the lease surrenders are for nil consideration or for chargeable consideration, and second on how the overall arrangement is characterised under the Finance Act 2003.

In anonymised form, his key points were:

• Where a lease is surrendered, section 43(3)(b) Finance Act 2003 treats that as an acquisition by the person whose interest is enlarged, usually the freeholder.
• If the surrender is for no chargeable consideration, there is generally no SDLT charge on the surrender itself, and under section 77A FA 2003 it may not even be notifiable if the consideration is nil or below the statutory threshold.
• If the surrender is instead carried out at market value, that creates chargeable consideration. In a connected-party situation, section 53 FA 2003 can apply a market value rule.
• Where the surrender of the leases and the later sale of the freehold are part of one overall arrangement, section 108 FA 2003 on linked transactions becomes relevant.
• As Nick put it in substance, the intermediate steps do not create an extra SDLT charge for the buyer beyond tax on the overall acquisition price. The buyer is taxed on the total consideration for what is ultimately being acquired.
• Because the final asset being sold includes a commercial unit as well as residential property, the final acquisition is capable of falling within the mixed-use rates in section 55, Table B FA 2003.

The Law

The relevant SDLT rules come mainly from the Finance Act 2003.

• Section 43(1) provides that SDLT applies to land transactions involving the acquisition of a chargeable interest.
• Section 43(3)(b) treats the surrender or release of a chargeable interest as an acquisition by the person whose interest is benefited or enlarged.
• Section 48 helps identify the subject matter of the land transaction, including the chargeable interest acquired.
• Section 50 provides that chargeable consideration includes money or money’s worth.
• Section 53 contains a market value rule in certain connected-party cases.
• Section 55 sets out the rate structure. For non-residential or mixed-use transactions, Table B applies.
• Section 77A deals with transactions that are not notifiable where chargeable consideration is below the statutory threshold, including nil consideration cases.
• Section 108 defines linked transactions. Transactions are linked if they form part of a single scheme, arrangement or series of transactions between the same buyer and seller or persons connected with them.

In practical terms, the SDLT analysis usually separates into two stages:

1. What SDLT, if any, arises on the surrender of the leases into the freehold?
2. What SDLT does the buyer pay on the eventual acquisition of the completed freehold interest?

Analysis

Step 1: Identify the existing interests.

There is a freehold interest already held by the company, and there are separate long leasehold interests in part of the same building held personally by a connected individual. Those leasehold interests are separate chargeable interests for SDLT purposes.

Step 2: Consider the surrender of the leases.

If the leaseholder surrenders the leases to the freeholder, section 43(3)(b) treats that as an acquisition by the freeholder. The next question is whether there is any chargeable consideration.

If the surrender is for nil consideration, there is generally no SDLT charge on that surrender. That was Nick’s original point. In that kind of case, the surrender itself does not create a meaningful SDLT cost.

If the surrender is for market value or other consideration, that is different. The freeholder is then acquiring the leasehold interests for chargeable consideration, and an SDLT analysis must be carried out on that acquisition. In a connected-party scenario, section 53 may require market value to be used.

Step 3: Consider the wider tax reason for using market value.

In the source scenario, the leases were not going to be surrendered for nil consideration because that created wider tax concerns outside SDLT. That is a common issue. SDLT is only one part of the picture. A structure that is efficient for SDLT may create less attractive consequences for capital gains tax, corporation tax, distribution treatment, or extraction of value from a company.

So, if the parties choose a market-value surrender for wider tax reasons, that may well be acceptable mechanically for SDLT, but it means the surrender is no longer a nil-consideration step.

Step 4: Consider whether the transactions are linked.

Where the lease surrenders and the freehold sale are all part of one pre-arranged scheme to deliver a single freehold title to the buyer, section 108 FA 2003 is highly relevant. The transactions are likely to be linked.

Linked transactions matter because SDLT looks at the total chargeable consideration for linked acquisitions when determining rates and thresholds. In a case like this, the surrender steps are part of the process of assembling the title that is then sold on.

Step 5: Consider the buyer’s SDLT position.

The buyer’s concern was that collapsing the leases into the freehold might create an extra SDLT bill of roughly six figures. On the reasoning set out by Nick, that concern is misplaced if it assumes some sort of double charge on the buyer.

The buyer is paying SDLT on the acquisition actually made by the buyer. If the buyer acquires the completed freehold of the whole mixed-use building, the SDLT charge is calculated by reference to that acquisition and the total consideration paid for it.

The prior surrender steps may themselves have SDLT consequences for the parties involved in those steps if consideration is given, but they do not automatically add a second layer of SDLT on top of the buyer’s acquisition merely because the title was first reorganised.

Step 6: Determine whether mixed-use rates apply.

If, at completion, the property being acquired includes both commercial and residential elements, the transaction is generally taxed as mixed-use under section 55, Table B FA 2003. In broad terms, the top marginal rate under the mixed-use rate table is 5% on the portion of consideration above the relevant threshold.

That does not mean SDLT is simply a flat 5% of the whole price. It means the mixed-use rate table applies, with 5% as the top slice rate. In many higher-value mixed-use transactions, however, people shorthand the result by saying the top rate is 5%.

Step 7: Distinguish SDLT from habitability issues.

Some readers ask whether residential parts that are in poor condition can be ignored so that the purchase is treated differently. In any uninhabitable or not suitable for use case, the condition thresholds are now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. So poor condition arguments should be approached with care. In the present type of case, though, the more important point is usually the mixed-use character of the building rather than any uninhabitable dwelling argument.

Outcome

The practical SDLT conclusion is as follows:

• If the long leases are surrendered for nil consideration, there is generally no SDLT on the surrender itself.
• If the long leases are surrendered for market value, the surrender step can itself be chargeable for SDLT, especially where connected parties are involved and section 53 FA 2003 applies.
• That does not mean the buyer suffers an additional duplicate SDLT charge merely because the title has been restructured before completion.
• If the buyer acquires the whole building as a mixed-use freehold, the buyer’s acquisition is generally taxed under the mixed-use rate table in section 55, Table B FA 2003.
• The larger commercial issue is often not the buyer’s SDLT, but the seller-side CGT and corporation tax consequences of surrendering the leases at market value before the sale.

Practical Steps

1. Map out the legal interests clearly: freehold, leaseholds, title numbers, and who owns each interest.
2. Decide whether the leases are to be surrendered for nil consideration or market value, and why.
3. Check whether the parties are connected for SDLT purposes, because that may trigger the market value rule under section 53 FA 2003.
4. Work out the SDLT position separately for:
   • the surrender step, and
   • the buyer’s final acquisition.
5. Confirm whether the property being acquired at completion is mixed-use. If it includes a commercial unit and residential property, mixed-use rates may apply.
6. Do not look at SDLT in isolation. Check the CGT and corporation tax implications of collapsing the leases before exchange or completion.
7. Make sure the transaction documents reflect the real legal steps and the real consideration passing at each stage.
8. If the parties want simultaneous completion, ensure the contractual mechanics match the intended tax treatment and land registration outcome.

Conclusion

Where long leasehold flats are surrendered into the freehold before a mixed-use building is sold, that restructuring does not by itself mean the buyer faces an extra SDLT charge on top of the SDLT due on the final purchase. The key distinction is whether the surrender is for nil consideration or market value. Nil consideration may avoid SDLT on the surrender step itself, while market value can create a separate SDLT analysis for that step. The buyer’s final purchase of the mixed-use freehold is then generally assessed under the mixed-use SDLT rules in Finance Act 2003, section 55, Table B.

Legal References Used

• Finance Act 2003, section 43
• Finance Act 2003, section 48
• Finance Act 2003, section 50
• Finance Act 2003, section 53
• Finance Act 2003, section 55
• Finance Act 2003, section 77A
• Finance Act 2003, section 108
• Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799

This page was last updated on 22 March 2026.

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