LTT planning obligation relief: definitions that decide it
Planning obligation relief definitions
LTT relief can apply to a land transfer made to comply with a valid planning obligation. It is limited to specific agreements, buyers and dates.
- Check the signed section 106 agreement or formal modification.
- Confirm the buyer is a listed public body.
- Check the transfer falls within the five-year period.
Scroll down for the full analysis.
Read the original guidance here:
LTT planning obligation relief: definitions that decide it
A land transfer may not have Land Transaction Tax (LTT) when it is needed to meet a planning obligation. This is not a general tax break for every sale linked to a council. Relief depends on the agreement, buyer and timing meeting the legal definitions.
What this rule is about
Planning obligations are often called section 106 agreements. They can form part of a planning deal. They may require land, money or works. Sometimes, complying with the agreement involves giving land to a public body.
In that situation, planning obligation relief may remove LTT from the transfer. But the relief is limited. Its title as a section 106 agreement, by itself, does not decide the issue.
What matters is this: the law gives set meanings to both the agreement and the public body that gets the land.
What the official source says
Welsh Government guidance explains the LTT definitions. Under the legislation, a transfer made to meet a planning obligation, or a change to one, is free from LTT only if every condition is met. Every condition matters.
- For relief to apply, this must be a planning obligation within section 106 of the Town and Country Planning Act 1990.
- It must have been formally entered into in the way section 106(9) requires.
- A modification means one covered by section 106A(1) of that Act.
- To qualify, the seller must be legally bound by the obligation or modification.
- For this particular relief, the buyer must be a public body.
- Completion of the transaction must take place within five years of the obligation or modification.
- By making regulations, the Welsh Ministers may add more bodies that qualify.
For this relief, the listed public bodies are county or county borough councils, Special Health Authorities, Local Health Boards and NHS Trusts established under the National Health Service (Wales) Act 2006.
That list matters. A body may provide a public service but still not be on the list.
What this means in practice
Begin with the signed planning papers. A planning condition, an informal promise or a note in a planning report does not automatically count as a planning obligation for this relief.
Next, check the buyer’s legal status rather than its name or brand. Close work with a council does not, for example, make a body the council itself.
- Keep the signed section 106 agreement and any later formal modification.
- Check that the document binds the seller at the time of the transfer.
- Match the transfer to the requirement in that document.
- Confirm that the buyer is one of the listed bodies or is covered by regulations.
Unless the LTT Act says otherwise, the transaction’s effective date is usually its completion date. That date must be within the five-year period for the obligation or modification. This timing rule is strict.
How to analyse it
Ask these questions in order. You need documents for each answer. Do not rely only on an assumption made during the sale.
- Is there a section 106 planning obligation?
- Was it properly made in the required form?
- Has it been changed, and was that change a section 106A(1) modification?
- Does the transfer happen to meet a requirement in that obligation or modification?
- Can the obligation be enforced against the seller?
- Who is the buyer in legal terms?
- Does the effective date fall within five years of the relevant agreement or modification?
If one answer is no, this particular relief does not apply. Other LTT rules may need to be considered, but this guidance does not cover them.
Example
Illustration: a developer signs a valid planning obligation requiring it to transfer a piece of land to a county borough council, is bound by that agreement, and completes the transfer to meet that requirement within five years of the agreement. On those facts, the key conditions in the official source are present.
Now a private company gets the land. It will later provide services for the council. Supporting the same development through that work does not automatically make the company a listed public body. You cannot assume the relief applies.
Why this can be difficult in practice
Documents often use loose terms. They may call something a planning agreement, a deed or a later variation. The legal definition decides the issue, not the label. The name chosen by the parties does not decide it.
A later deal may make business sense in the circumstances. But it does not qualify unless the transfer is made to meet the planning obligation. The purpose matters.
- Do not assume that every transfer linked to planning qualifies.
- Do not assume every public-sector buyer is on the statutory list.
- Do not overlook a later modification, as it may affect the relevant five-year period.
- Do not rely only on a planning officer’s summary of the agreement.
Key takeaways
- A valid section 106 obligation or a qualifying modification is needed for LTT planning obligation relief.
- For relief, the seller must be bound by the obligation, and the transfer must meet it.
- Statutory rules must be met by the buyer and the transaction date.
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
- LTTA 2017 Schedule 21 para 2 — planning obligation relief conditions and defined public bodies
- LTTA 2017 section 71 — the usual meaning of a transaction’s effective date
- an Act of 1990 we do not have an identifier for section 106 — planning obligations made through formal planning agreements (no link: an Act of 1990 we do not have an identifier for)
- an Act of 1990 we do not have an identifier for section 106 — formal execution requirements for a planning obligation (no link: an Act of 1990 we do not have an identifier for)
- an Act of 1990 we do not have an identifier for section 106A — modification and discharge of planning obligations (no link: an Act of 1990 we do not have an identifier for)
- an Act of 1972 we do not have an identifier for section 21 — county and county borough council constitution (no link: an Act of 1972 we do not have an identifier for)
- an Act of 2006 we do not have an identifier for section 11 — establishment of local health boards in Wales (no link: an Act of 2006 we do not have an identifier for)
- an Act of 2006 we do not have an identifier for section 18 — establishment of national health service trusts (no link: an Act of 2006 we do not have an identifier for)
- an Act of 2006 we do not have an identifier for section 22 — establishment of special health authorities in Wales (no link: an Act of 2006 we do not have an identifier for)
Official guidance
The pages below are the Welsh Revenue Authority’s guidance. Guidance is not law. It sets out how the Welsh Revenue Authority 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. the Welsh Revenue Authority can also change or withdraw guidance, and it may not cover your facts.
Where this is not settled
- Whether a particular transfer was entered into to comply with an obligation can depend on the agreement, planning documents and surrounding facts.
- Welsh Ministers may specify further public bodies in regulations, so the current regulations should be checked where the buyer is not on the statutory list.
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 signed section 106 planning obligation or modification document
- Evidence that the obligation is enforceable against the seller
- Documents showing why the transfer is required to meet that obligation
- Evidence of the buyer’s legal status
- Dates of the obligation or modification and of the transaction
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 Land Transaction Tax (LTT), the tax on property in Wales. It replaced Stamp Duty Land Tax in Wales on 1 April 2018, and SDLT does not apply in Wales. MY QUESTION LTT planning obligation relief: definitions that decide it [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 - LTTA 2017 Schedule 21 para 2 - planning obligation relief conditions and defined public bodies https://www.legislation.gov.uk/anaw/2017/1/schedule/21/paragraph/2 - LTTA 2017 section 71 - the usual meaning of a transaction's effective date https://www.legislation.gov.uk/anaw/2017/1/section/71 - an Act of 1990 we do not have an identifier for section 106 - planning obligations made through formal planning agreements - an Act of 1990 we do not have an identifier for section 106 - formal execution requirements for a planning obligation - an Act of 1990 we do not have an identifier for section 106A - modification and discharge of planning obligations - an Act of 1972 we do not have an identifier for section 21 - county and county borough council constitution - an Act of 2006 we do not have an identifier for section 11 - establishment of local health boards in Wales - an Act of 2006 we do not have an identifier for section 18 - establishment of national health service trusts - an Act of 2006 we do not have an identifier for section 22 - establishment of special health authorities in Wales Guidance page from the Welsh Revenue Authority on this topic (guidance, not law): https://www.gov.wales/land-transaction-tax-compulsory-purchase-relief-and-planning-obligations-relief-technical-guidance#5857 HOW I WANT YOU TO ANSWER 1. Work from the legislation above. Read it before answering. Guidance from the Welsh Revenue Authority is its 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 - Whether a particular transfer was entered into to comply with an obligation can depend on the agreement, planning documents and surrounding facts. - Welsh Ministers may specify further public bodies in regulations, so the current regulations should be checked where the buyer is not on the statutory list. Do not give me a conclusion you cannot support from the provisions above.
Legislation links show the Land Transaction Tax and Anti-avoidance of Devolved Taxes (Wales) Act 2017 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 3 September 2026
Useful article? You may find it helpful to read the original guidance here: LTT planning obligation relief: definitions that decide it
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