Stamp duty when you buy more than 100 properties
More than 100 properties
HMRC’s manual says that a transaction involving more than 100 properties should use a schedule instead of multiple SDLT3 or SDLT4 forms.
- Ask HMRC how it wants the schedule prepared and sent.
- Provide paper and electronic copies.
- Check registration requirements and lodge the SDLT5 with the right supporting document.
Scroll down for the full analysis.
Read the original guidance here:
Stamp duty when you buy more than 100 properties
When one stamp duty land tax transaction involves more than 100 properties, HMRC says you should provide the property details on a schedule.
This replaces many separate SDLT3 or SDLT4 forms.
Get the paperwork right. Registration may depend on evidence of SDLT compliance.
What this rule is about
A large portfolio creates a practical problem: one return may need details for a huge number of addresses.
HMRC’s manual sets out a special way to send those details when a transaction involves 101 properties or more.
This rule concerns processing the return. It does not decide your stamp duty bill.
It also does not decide whether a tax relief applies.
The law requires a return for a notifiable transaction and links registration to evidence that SDLT requirements have been met, while the manual explains HMRC’s preferred paperwork for very large transactions.
The manual explains the process.
What the official source says
HMRC’s manual says that, when more than 100 properties are involved, you should send the information in schedule form.
Do not send multiple SDLT3 or SDLT4 forms instead.
- Contact HMRC’s helpline to find out how to send the schedule.
- The right schedule format depends on the interests being bought.
- The format also depends on how those interests should be coded.
- HMRC says it needs a paper copy with the SDLT1.
- HMRC also says it needs an electronic copy.
- Providing both copies may reduce the time needed to produce the certificate.
HMRC also suggests that you speak to the Land Registry before sending the return.
That warning makes sense. A registration body may require documents in a particular form.
The manual is HMRC guidance, not legislation, and it describes HMRC’s administrative process, while the Finance Act 2003 creates the legal duties to make an SDLT return and provide compliance evidence for registration.
The Act sets the legal duties.
What this means in practice
Count the properties early. HMRC’s manual draws the line at more than 100 properties.
A transaction involving 100 properties does not meet that stated condition. One involving 101 does.
Do not leave the property list until the end, because a missing address, an unclear description of what is being bought, or an unsuitable file format can delay the certificate and hold up registration.
Small errors can matter.
- Prepare one accurate list of all properties before submitting the return.
- Check that every address matches the transaction documents.
- Keep the electronic version consistent with the paper version.
- Ask HMRC about the required schedule format and coding.
- Check registration requirements before filing, not after.
- Keep copies of everything sent to HMRC.
In most cases, HMRC says the Land Transaction Return Certificate, known as the SDLT5, will show only one property address.
That can look odd in a portfolio purchase. It does not mean you should ignore the other properties.
For multiple addresses, the manual says you must lodge the SDLT5 with either the SDLT3 or SDLT4 for the relevant property, or an SDLT5(CS) schedule from HMRC if you have one.
Use the supporting document.
How to analyse it
Start with the transaction itself. Then work through the filing and registration documents.
The key point is the number of properties involved in the transaction, not simply the number of pages in the contract.
- Identify the transaction for which the SDLT return is being made.
- Count every property involved in it.
- Check whether the total is more than 100.
- List the address and interest being bought for each property.
- Ask HMRC how it wants the schedule submitted.
- Provide the paper and electronic copies described in the manual.
- Check what the relevant registration body will accept with the SDLT5.
- Match the SDLT5 to the supporting form or endorsed schedule.
What decides the process? First, whether the transaction involves more than 100 properties.
Then check whether you have the right supporting document for each address when you lodge registration.
Example
Priya buys a portfolio of 101 flats under one transaction.
HMRC’s manual says she should not send a separate SDLT3 or SDLT4 for every flat; instead, she should ask HMRC how to prepare a schedule, then provide it on paper with the SDLT1 and electronically.
She must provide both copies.
Her SDLT5 shows only one address. For registration, the manual says she should lodge the SDLT5 with the relevant supporting document.
If HMRC has used her agent’s list as the schedule, stamped it and added the certificate number, that endorsed list can be lodged with the SDLT5.
HMRC must endorse the list.
Change one fact: if the transaction involved 100 flats, the manual’s more-than-100 schedule instruction would not apply on its wording.
The wording sets the limit.
Why this can be difficult in practice
The source gives a process, but not a template.
It does not say exactly how every interest should be coded or what electronic format HMRC will currently accept, and those details may vary with the facts and HMRC’s systems.
Details can vary.
This is where people can go wrong: an SDLT5 that names one address is not, by itself, a full address list for a large transaction.
The supporting paperwork matters.
- Do not assume the SDLT5 will show every property address.
- Do not assume an SDLT5(CS) has been issued; HMRC says this is unusual.
- Do not use an agent’s list as an official schedule unless HMRC has endorsed it.
- Do not assume a schedule changes the tax result.
- Do not treat the manual as a substitute for the legal SDLT return requirements.
Key takeaways
- HMRC says the schedule process applies when more than 100 properties are involved.
- Send the schedule in paper and electronic form after checking HMRC’s current instructions.
- Plan the SDLT5 and supporting registration documents together.
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 76 — duty to make a land transaction return
- FA 2003 section 79 — registration requires evidence of SDLT compliance
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 source does not explain the current technical method for sending a schedule or the coding required for each type of property interest.
- The source does not define when properties form one transaction for these processing arrangements.
- The manual’s references to SDLT1, SDLT3, SDLT4, SDLT5 and SDLT5(CS) should be checked against HMRC’s current filing process before submission.
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.
- A complete list of every property and address involved
- Details of the interest being bought for each property
- The completed SDLT return and certificate number
- Any SDLT3, SDLT4 or HMRC-endorsed schedule available
- The relevant land registration body’s requirements
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 when you buy more than 100 properties [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 76 - duty to make a land transaction return https://www.legislation.gov.uk/ukpga/2003/14/section/76/2025-11-17 - FA 2003 section 79 - registration requires evidence of SDLT compliance https://www.legislation.gov.uk/ukpga/2003/14/section/79/2025-11-17 HMRC's guidance page on this topic (guidance, not law): https://www.gov.uk/hmrc-internal-manuals/stamp-duty-land-tax-manual/sdltm60215 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 source does not explain the current technical method for sending a schedule or the coding required for each type of property interest. - The source does not define when properties form one transaction for these processing arrangements. - The manual's references to SDLT1, SDLT3, SDLT4, SDLT5 and SDLT5(CS) should be checked against HMRC's current filing process before submission. 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 when you buy more than 100 properties
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