Stamp duty (SDLT): getting help, rulings and payment deferral
Getting SDLT help
HMRC’s manual directs simple questions to its Help Line and formal ruling or payment-deferral requests to the Stamp Office.
- The manual is HMRC guidance, not law.
- Deferred payment has legal conditions.
- Keep records of any request sent to HMRC.
Scroll down for the full analysis.
Read the original guidance here:
Stamp duty (SDLT): getting help, rulings and payment deferral
Stamp duty (SDLT): getting help, rulings and payment deferral
For simple stamp duty land tax questions, HMRC says to contact its Help Line first.
Where a request seeks to delay tax on future payments, or asks HMRC for a ruling on a particular arrangement, it should be sent to the Stamp Office. These routes differ.
What this rule is about
Some property deals include a later payment. Its amount may depend on something that has not happened yet. Working out what SDLT is due now can therefore be difficult.
Other questions may arise before you buy or after you complete. HMRC’s internal manual explains where it wants these requests sent. It is a guide to HMRC’s process, not the law itself.
What the official source says
HMRC’s manual separates routine help from more formal requests. It says the Stamp Office should receive requests about payment deferral and rulings.
- Use the Help Line first for a straightforward request for information or help.
- Use the Stamp Office for uncertain-amount deferral.
- Send a request for a ruling before a property deal to the Stamp Office.
- Send a request for a ruling after a property deal to the Stamp Office.
- HMRC will update the buyer or agent.
What this means in practice
The route matters because a general question differs from a request for HMRC to consider a particular deal. Do not assume a Help Line call starts a formal request.
- Start with the Help Line if your question is simple and general.
- Use the Stamp Office route for the types of request named in the manual.
- Keep a copy of what you send and the date you sent it.
- Ask whether you need an answer before completion or after it.
How to analyse it
First, identify the kind of help you need. Then check whether the law permits payment to be delayed. What matters is not simply that a payment comes later.
- Does this concern a simple information request, a ruling request, or a request to defer payment where the price depends on an uncertain future event?
- Does part of the price depend on an uncertain future event?
- Could at least one possible future payment date, if the relevant event occurs and the amount remains uncertain, fall more than six months after completion?
- Is any SDLT already due on a fixed amount that can be worked out now?
- Is the amount in question rent? That payment-deferral rule does not cover rent.
Example
Sam buys a site and agrees an extra payment if a future event occurs. An extra sum may be due nine months after completion.
Because Sam’s extra sum depends on a future event and may not be due until nine months after completion, both timing and uncertainty matter. They do.
On those facts, the arrangement may therefore meet the legal conditions for an application about that uncertain future sum, if the statutory requirements are satisfied. It may.
Not all of the SDLT bill can wait. HMRC’s manual says to send that application to the Stamp Office.
Why this can be difficult in practice
People often focus on when money will be paid, even though the test also asks whether the amount remains uncertain rather than fixed. Timing is only part of the test. A fixed amount still attracts tax.
- A later payment is not automatically an uncertain payment.
- A Help Line call is not described as a formal ruling request.
- It does not promise that HMRC will accept an application.
- It gives no response time or list of documents needed.
Key takeaways
- Use the Help Line first for straightforward SDLT questions.
- HMRC directs ruling and payment-deferral requests to the Stamp Office.
- Check the legal conditions before assuming SDLT payment can wait.
Technical analysis
For advisers, and for anyone who wants to check the law behind this page. You do not need this section to understand the guidance above.
Legislation
- FA 2003 section 51 — how to value uncertain or contingent future payments
- FA 2003 section 90 — when payment can be deferred for uncertain sums
Official guidance
The pages below are HMRC’s guidance. Guidance is not law. It sets out how HMRC reads the legislation, and it is not binding on you, on a tribunal or on a court. Where guidance and the legislation differ, the legislation wins. HMRC can also change or withdraw guidance, and it may not cover your facts.
Where this is not settled
- The supplied manual does not explain how HMRC decides requests for rulings, what information it needs, whether a ruling will bind HMRC, or how long a response will take.
- The supplied material does not give the current Help Line or Stamp Office contact details. Those details should be checked on the linked HMRC contact page.
Evidence you would need
This kind of case is decided on the facts of the individual property. These are the records that usually settle it, and the ones an adviser would ask you for.
- The sale agreement and any terms for future payments.
- The completion date and the dates when future payments may become due.
- A clear calculation separating fixed amounts from amounts that depend on future events.
- Copies of the request sent to HMRC and any response received.
Explore this with an AI
Readers often want to test their own situation. Copy the prompt below into ChatGPT, Claude or Gemini. It hands the model the actual legislation for this page rather than letting it answer from memory, and tells it to be explicit about what is uncertain. What comes back is information, not advice – check it against the links above.
I am researching UK Stamp Duty Land Tax (SDLT), which applies in England and Northern Ireland. MY QUESTION Stamp duty (SDLT): getting help, rulings and payment deferral [Replace this with your own situation: what you are buying, the price, the dates, who the buyer is, and what you plan to do with the property.] THE LAW THIS TURNS ON - FA 2003 section 51 - how to value uncertain or contingent future payments https://www.legislation.gov.uk/ukpga/2003/14/section/51/2025-11-17 - FA 2003 section 90 - when payment can be deferred for uncertain sums https://www.legislation.gov.uk/ukpga/2003/14/section/90/2025-11-17 HMRC's guidance page on this topic (guidance, not law): https://www.gov.uk/hmrc-internal-manuals/stamp-duty-land-tax-manual/sdltm60400 HOW I WANT YOU TO ANSWER 1. Work from the legislation above. Read it before answering. HMRC guidance is HMRC's view of the law, not the law, and does not bind a tribunal or a court. 2. Tell me what the rule actually requires, in plain English. 3. Tell me which facts decide the answer, and which facts would change it. 4. Tell me what evidence I would need to support the position. 5. Be explicit about anything unsettled or fact-sensitive. Do not guess. 6. Your training data has a cutoff and SDLT rates and reliefs change at fiscal events. Say so if you are not sure the law is current. POINTS ALREADY KNOWN TO BE UNCERTAIN ON THIS TOPIC - The supplied manual does not explain how HMRC decides requests for rulings, what information it needs, whether a ruling will bind HMRC, or how long a response will take. - The supplied material does not give the current Help Line or Stamp Office contact details. Those details should be checked on the linked HMRC contact page. Do not give me a conclusion you cannot support from the provisions above.
Legislation links show Finance Act 2003 as it stood on 2025-11-17. The law may have changed since, and the rules that apply are those in force on the date of your transaction. The official guidance this page is based on is here.
This page was last updated on 1 September 2026
Useful article? You may find it helpful to read the original guidance here: Stamp duty (SDLT): getting help, rulings and payment deferral
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