Guide on Penalties and Interest for Stamp Duty Land Tax Compliance

SDLT penalties for late, missing, or incorrect returns

HMRC can charge SDLT penalties for more than just late payment of tax. Penalties may apply if a notifiable land transaction is not reported, if the SDLT return is filed late, or if the return is inaccurate. Interest on late-paid tax is separate and can be charged as well.

• SDLT is self-assessed, so the buyer or their adviser is usually responsible for filing the correct return and paying any tax on time.
• HMRC treats failure to notify, late filing, and incorrect returns as separate compliance risks, and more than one issue can arise in the same case.
• Penalties can be fixed amounts, tax-based amounts, or daily penalties where non-compliance continues.
• Incorrect returns may lead to separate penalties if they understate tax, include a false claim, or otherwise affect the tax outcome.
• When reviewing SDLT exposure, check whether a return was required, whether it was filed on time, whether the tax was paid on time, and whether the return was accurate.
• HMRC guidance is only a signpost: the actual legal position depends on the legislation and the facts, especially where reliefs, linked transactions, or interpretation issues are involved.

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SDLT penalties for late returns, failure to notify, and incorrect returns

This page explains, at a high level, the penalty issues flagged by HMRC for Stamp Duty Land Tax compliance. The source material is brief, but its practical message is important: SDLT penalties can arise not only where tax is paid late, but also where a land transaction return is filed late, where HMRC is not notified when it should be, or where the return is inaccurate.

What this rule is about

SDLT is a self-assessed tax. That means the buyer, or someone acting for them, is generally responsible for making a correct return and paying any SDLT due on time. HMRC’s compliance rules are designed to deal with three broad types of failure:

• not notifying HMRC when notification is required;
• sending in the land transaction return late; and
• sending in a return that is incorrect.

The source also refers to interest. In practice, interest is separate from penalties. A penalty is a sanction for non-compliance. Interest compensates for late payment of tax.

What the official source says

The HMRC manual states that there are fixed penalties, tax-geared penalties, and daily penalties for failure to notify and for sending in land transaction returns late. It directs readers to HMRC’s SDLT manual for the detail.

The source also states that there are penalties for incorrect returns, and points readers to HMRC’s wider compliance guidance on inaccuracies.

So the official position is not limited to one single penalty. Different penalty types may apply depending on the kind of failure and how serious it is.

What this means in practice

The practical point is that SDLT compliance has more than one moving part. A buyer or adviser should not focus only on whether SDLT has been paid. HMRC can look separately at:

• whether a return was required at all;
• whether the return was delivered on time;
• whether the figures and claims in the return were accurate; and
• whether any tax due was paid on time, which can also trigger interest.

A fixed penalty is usually a set amount triggered by a defined failure, regardless of the tax at stake. A tax-geared penalty depends on the amount of tax involved. A daily penalty increases the cost of continuing non-compliance over time.

For incorrect returns, the key practical issue is usually whether the inaccuracy led to an understatement of tax, a false claim, or another tax consequence, and how HMRC categorises the behaviour behind the error. The source page does not set out that framework in detail, but it makes clear that inaccurate returns are a separate penalty risk.

How to analyse it

If you are checking SDLT penalty exposure, it helps to work through the issue in stages.

• Was there a notifiable land transaction? If yes, consider whether a return should have been filed.
• Was the return filed by the required deadline?
• If the return was late, is the potential penalty a fixed amount, a tax-related amount, a daily amount, or a combination under the relevant rules?
• Was the SDLT paid on time? If not, interest may run even if the filing issue is dealt with separately.
• Was the return correct when filed? Check chargeable consideration, relief claims, property classification, purchaser details, and any linked transaction position.
• If the return was wrong, did the error affect the tax outcome or produce an unjustified claim?
• Is the issue a simple lateness case, an inaccuracy case, or both?

This matters because one set of facts can produce more than one compliance consequence. For example, a return may be both late and inaccurate, and late payment interest may also arise if too little tax was paid by the deadline.

Example

Illustration: a buyer completes a notifiable land transaction but the SDLT return is filed after the deadline. HMRC may charge a late filing penalty. If the delay continues, daily penalties may also become relevant under the applicable rules. If the return, when eventually filed, also understates the price paid and therefore understates the SDLT due, HMRC may separately consider an inaccuracy penalty. If the tax was paid late as a result, interest may also be due.

Why this can be difficult in practice

The source page is only a signpost, so it does not explain when each penalty applies, how the amount is calculated, or how HMRC approaches inaccuracies in detail. That can matter because SDLT compliance problems often overlap.

Some cases are straightforward, such as a clearly late return. Others are more fact-sensitive. For example:

• there may be a dispute about whether a return was required at all;
• the tax effect of an error may depend on technical SDLT rules, such as reliefs or linked transactions;
• an apparent inaccuracy may reflect a genuine legal interpretation issue rather than a simple mistake.

It is also important not to treat HMRC manual wording as if it were the legislation itself. The manual explains HMRC’s view and directs readers to the relevant regimes, but the legal position ultimately depends on the statutory rules that impose the penalties and interest.

Key takeaways

• HMRC identifies separate SDLT penalty risks for failure to notify, late filing, and incorrect returns.
• Penalties may be fixed, tax-geared, or daily, and interest can arise separately on late-paid tax.
• When reviewing a case, check filing obligations, deadlines, payment timing, and the accuracy of the return as distinct issues.

This page was last updated on 24 March 2026

Useful article? You may find it helpful to read the original guidance here: Guide on Penalties and Interest for Stamp Duty Land Tax Compliance

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