Can you reclaim the 3% SDLT surcharge after selling your old home more than a year later?

Introduction

A common Stamp Duty Land Tax question is whether the 3% higher rates can be refunded when someone buys a new home before selling their previous one. Many people know that a refund is possible if the old main residence is sold later, but problems arise when the sale happens outside HMRC’s time limits. Readers often search for this issue after paying the higher rates on a replacement home purchase and then discovering, too late, that the refund rules are strict.

The Question

The scenario is this: a buyer purchased a new home while still owning another dwelling, so SDLT was paid at the higher rates for additional dwellings. The buyer later sold the former property and wanted to know whether the extra SDLT could now be reclaimed in full, even though more than a year had passed since that sale.

Nick’s Explanation

Nick’s main point was that HMRC’s refund rules for the 3% surcharge are time-sensitive. In anonymised form, his explanation was:

“If you sold your previous main residence on or after 29 October 2018, a refund must be claimed within 12 months of whichever is later: the sale of the previous main residence or the filing date of the SDLT return for the new residence.”

He also noted that if both of those deadlines had already passed, the normal replacement of main residence refund route would usually be out of time.

Nick then mentioned a separate and quite different possibility: whether the property bought was genuinely unsuitable for use as a dwelling at the effective date of the transaction. He referred to P N Bewley Ltd v HMRC as part of the older line of authority on property condition arguments. However, that area has since become much narrower. In an 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.

The Law

The higher rates of SDLT apply to purchases of additional dwellings under Schedule 4ZA to the Finance Act 2003. Broadly, if a buyer owns another dwelling at the end of the day of purchase, the 3% surcharge may apply.

There is an important exception where the buyer is replacing their only or main residence. If the old main residence has not yet been sold when the new one is bought, the higher rates may still be payable up front, but a refund can later be claimed if the old main residence is sold within the permitted period and the statutory conditions are met.

For sales of the previous main residence on or after 29 October 2018, HMRC states that the refund claim must be made within 12 months of the later of:

• the effective date of sale of the previous main residence, and
• the filing date for the SDLT return for the new residence.

Those refund rules sit within the higher rates regime in Schedule 4ZA to the Finance Act 2003 and HMRC’s published guidance on higher rates for additional dwellings.

Separately, some buyers have argued that a property should not have been treated as residential at all because, at completion, it was not suitable for use as a dwelling. That argument concerns the correct SDLT treatment at the time of purchase, not the replacement of main residence refund rules. Earlier cases such as P N Bewley Ltd v HMRC gave taxpayers some support in severe condition cases. But the courts have since taken a stricter approach. Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the threshold for showing that a property was not suitable for use as a dwelling is now relatively high.

Analysis

The position can be analysed in two separate stages.

First, ask why the 3% surcharge was paid. If the buyer still owned another dwelling at the end of the purchase day, and the new purchase did not immediately qualify as a replacement of main residence, the higher rates were likely charged correctly at that time.

Second, ask whether a later refund became available. A refund is usually possible only if:

• the new property was intended to replace the buyer’s only or main residence,
• the former main residence was sold within the permitted period, and
• the refund claim was submitted within HMRC’s deadline.

In this scenario, the key problem is not simply the date of sale. It is the claim deadline. Even where the old home was sold and the substantive replacement conditions were met, the refund can still be lost if the claim was not made within 12 months of the later of the sale date and the filing date of the SDLT return for the new purchase.

If that deadline has passed, the normal refund route is generally closed.

Some people then wonder whether they can instead argue that the property purchased was uninhabitable, so the SDLT should have been assessed differently from the outset. That is a separate legal argument and not an extension of the replacement refund deadline. It only helps where the property’s physical condition at completion was so serious that it was not suitable for use as a dwelling.

That argument is now much harder than many online articles suggest. After Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the courts have made clear that the threshold is relatively high. Ordinary disrepair, dated condition, missing fittings, or the need for renovation will often not be enough. The question is whether, viewed realistically at the effective date, the building was suitable for use as a dwelling. Many properties needing work will still count as dwellings for SDLT purposes.

So, where the only issue is that the previous home was sold too late for a refund claim, the answer is usually straightforward: the surcharge cannot be reclaimed through the normal replacement route once the statutory time limit has expired.

Outcome

If a buyer paid the 3% higher rates because they still owned another dwelling, and they later sold their former main residence, a refund is only available if the statutory conditions and time limits were met. If more than 12 months have passed since the later of the sale of the former main residence and the filing date of the SDLT return for the new purchase, the normal refund claim is usually out of time.

A separate argument based on the purchased property being uninhabitable is only relevant in genuinely severe condition cases, and that route is now much narrower following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

Practical Steps

If you are checking your own position, work through the following:

• Confirm the completion date of the new purchase.
• Confirm the filing date of the SDLT return for that purchase.
• Confirm the completion date of the sale of the former main residence.
• Calculate 12 months from the later of the sale date and the SDLT filing date.
• Check whether a refund claim was actually submitted by that deadline.

If the deadline has not yet passed, gather the SDLT return details and evidence that the sold property was your previous main residence.

If the deadline has passed, consider whether there is any entirely separate basis for saying the SDLT treatment at purchase was wrong from the outset. For example, was the property truly not suitable for use as a dwelling on completion? If so, review the evidence carefully, including survey reports, photographs, invoices, and the exact condition at the effective date. But bear in mind that the legal threshold is now relatively high.

It is also important not to confuse:

• a refund of higher rates because you later sold your old home, with
• a claim that the property acquired was never properly chargeable as residential in the first place.

They are different legal routes with different tests and different time considerations.

Conclusion

In most cases, you cannot reclaim the 3% SDLT surcharge simply because you later sold the old home if the refund claim deadline has already expired. The replacement of main residence refund rules are strict. A property condition argument is separate and now much harder to establish unless the dwelling was genuinely unsuitable for use as a dwelling at completion.

Legal References Used

• Finance Act 2003
• Finance Act 2003, Schedule 4ZA
• HMRC guidance on higher rates for additional dwellings and refund time limits
• P N Bewley Ltd v HMRC
• 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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