Guide to Claiming SDLT Refund for Overpaid Higher Rates on Additional Properties

SDLT refund after selling your previous main home

If you paid the higher rates of SDLT when buying a new home because you still owned your previous main residence, you may be able to reclaim the extra tax once the old home is sold. The refund is not automatic, and the claim must be sent to HMRC by the correct deadline, which depends on the sale date of the old home and the filing date of the SDLT return for the new home.

• This applies where the higher SDLT rates were paid on a new home and the buyer later sells their previous main residence under the replacement of main residence rules.
• If the previous main residence was sold on or after 29 October 2018, the claim deadline is the later of 12 months from that sale and 12 months from the SDLT filing date for the new home.
• If the previous main residence was sold on or before 28 October 2018, the claim deadline is the later of 3 months from that sale and 12 months from the SDLT filing date for the new home.
• You must compare both possible deadlines and use whichever is later; it is not always enough to count only from the sale of the old home.
• The main practical checks are whether the higher rate was actually paid, whether the facts meet Condition D, when the old home was sold, and whether the claim was made to HMRC in time.

Scroll down for the full analysis.

SDLT higher rates refund when you later sell your previous main home

This page explains when a buyer can reclaim the higher rates of SDLT after buying a new home and then selling their previous main residence. The point matters because many people have to pay the higher rates upfront, even though they may later become entitled to a refund if the old home is sold within the relevant rules.

What this rule is about

The source deals with refunds linked to Condition D in the higher rates for additional dwellings rules. In broad terms, this is the situation where a person buys a new residence before they have sold their previous main residence. At the time of the new purchase, the higher rates may apply because the buyer still owns the old home. If the old main residence is then sold, the buyer may have paid too much SDLT and can ask HMRC to repay the extra amount.

The rule on this page is not about whether the higher rates were correctly charged at the time of purchase. It is about the time limit for getting the money back once the previous main residence has been sold.

What the official source says

The official material says that if a purchaser paid the higher rates of SDLT and believes that, because of Condition D, they have overpaid, they can claim a refund from HMRC.

The time limit depends on when the previous main residence was sold.

If the previous main residence was sold on or after 29 October 2018, the refund claim must be made by the later of:

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

If the previous main residence was sold on or before 28 October 2018, the refund claim must be made by the later of:

• 3 months after the sale of the previous main residence, and
• 12 months after the filing date of the SDLT return for the new residence.

The source also points to GOV.UK for the refund process.

What this means in practice

The practical effect is that a buyer who paid the higher rates does not automatically get a refund when they later sell the old home. A claim must be made, and it must be made in time.

The key date is the date the previous main residence is sold. From that date, the buyer gets a claim window. For more recent sales, that window is usually 12 months. For older sales, the source gives a shorter 3-month period. In both cases, there is also a second time limit tied to the SDLT return for the new residence, and the buyer can use whichever deadline is later.

This means the claim deadline is not always simply counted from the sale of the old home. You must compare two dates and use the later one.

In everyday terms, the steps are usually:

• buy the new home and pay SDLT, including the higher rates if they apply at that time;
• later sell the previous main residence;
• check whether the sale means the higher rates were effectively overpaid under Condition D; and
• submit the refund claim to HMRC before the correct deadline.

How to analyse it

A sensible way to approach this is to ask the following questions.

• Was the higher rate of SDLT actually paid on the purchase of the new residence?
• Is the claimed overpayment said to arise because the buyer replaced their main residence under Condition D?
• When exactly was the previous main residence sold?
• Did that sale take place on or after 29 October 2018, or on or before 28 October 2018?
• What was the filing date of the SDLT return for the new residence?
• Which is later: the deadline running from the sale of the old home, or the deadline running from the SDLT filing date?
• Has the claim actually been submitted to HMRC by that later date?

The source only addresses the refund timing and the existence of the claim route. It assumes that the buyer is in a Condition D situation and that a refund is otherwise due. So, before focusing on the deadline, it is still necessary to be satisfied that the facts really do fit the replacement-of-main-residence rules.

Example

Illustration: a buyer purchases a new home, pays SDLT at the higher rates, and files the SDLT return. They are still living with the fact that they own their previous main residence. Several months later, they sell that previous main residence on 1 December 2024.

Because the sale took place on or after 29 October 2018, one possible deadline is 12 months from 1 December 2024. The other possible deadline is 12 months from the filing date of the SDLT return for the new home. The buyer can claim by whichever of those two dates is later.

This example shows why it is important to identify both dates rather than assuming there is only one deadline.

Why this can be difficult in practice

The source is brief and assumes the reader already understands what Condition D covers. In practice, two separate issues often get mixed together.

• First, whether the buyer is substantively entitled to a refund at all.
• Second, whether the claim is made within the correct time limit.

Another difficulty is that people often remember the date they moved house, but the rule works by reference to the sale date of the previous main residence and the filing date of the SDLT return for the new residence. Those are not always the same as completion, exchange, or moving dates that the buyer has in mind.

The change in time limit for sales on or after 29 October 2018 also matters. Older transactions may be subject to the shorter period mentioned in the source. So it is important not to assume that the same claim window applies to every case.

Key takeaways

• Paying the higher rates on a new home does not prevent a later refund if the old main residence is sold and Condition D is met.
• A refund is not automatic; the buyer must claim it from HMRC.
• The deadline is the later of two possible dates, and the length of the sale-based deadline depends on when the previous main residence was sold.

This page was last updated on 24 March 2026

Useful article? You may find it helpful to read the original guidance here: Guide to Claiming SDLT Refund for Overpaid Higher Rates on Additional Properties

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