Lease Termination Notice in Thailand: Templates and Legal Steps

There are 2 different notices, and most people use the wrong one at the wrong time. This is the most common problem landlords and real estate agents face when dealing with a tenant who isn't paying rent, or a lease that needs to be terminated.

On the Pantip forum, there are at least 5 separate threads (numbers 33598908, 40472235, 30594446, 42697322, and 33320057) where people directly ask for a sample overdue rent demand letter or lease termination notice, and many threads have no clear answer from an expert. Some threads, like number 42697322, ask about both types of documents in a single question — reflecting that many people don't even know how many documents they need.

This confusion isn't just about document format — it has real consequences for a landlord's rights. If a notice is sent in the wrong order, such as skipping the demand letter and terminating the lease immediately, the termination may not be legally valid, and if a dispute reaches court, the clarity of the documents sent also affects the weight of the evidence. Read more on how far documents sent online can be used as evidence in court

This article clearly separates the 2 documents, covering 3 different legal situations, along with the correct structure for each case and delivery methods that help confirm exactly when the tenant received the notice — a point many cases get wrong without realizing it.

Jabmue is a tool that helps create and send these notices with automatic delivery timestamps recorded

Summary: There are 2 different notices, and they're often used in the wrong situation. A demand letter is used to warn a tenant to pay overdue rent, giving the tenant at least 15 days from the date the letter is received before the lease can be terminated (under Section 560 of the Civil and Commercial Code). A lease termination notice is used once that period has passed and the tenant still hasn't paid, or for a lease with no fixed term, which requires at least one rent payment cycle of advance notice, but no more than 2 months (under Section 566). Both of these differ from a lease that simply reaches the end of its fixed term, which generally requires no advance notice at all (Section 564). The legal content in this article should be confirmed with a legal advisor before being relied on in practice.

Key Takeaways

• There are 2 different documents: a demand letter (for overdue rent) and a lease termination notice (for ending the lease).
• Overdue rent always requires a demand letter first, giving the tenant at least 15 days from the date of receipt, under Section 560.
• For a lease with no fixed term, termination requires at least one rent payment cycle of advance notice, but no more than 2 months, under Section 566.
• For a fixed-term lease that has reached its end date, no advance notice is generally required, under Section 564 — though sending a courteous notice remains good practice.
• The delivery method affects your ability to prove when the tenant received the notice — a point many cases get wrong in court.
• This content is general information, not case-specific legal advice.

Last updated: August 2026. This article is reviewed at least once a year to reflect changes in the law and new practice.

What to Prepare Before Writing the Notice

Before writing either notice, prepare the following documents and information in full, as they'll be needed at every subsequent step:

• A full copy of the lease agreement, including terms on rent payment and termination.
• A record of rent payment history, showing actual payment dates, amounts, and any outstanding periods.
• Accurate tenant contact details, including the address for sending the notice, email, and phone number.
• The lease start date and whether the agreement has a fixed term or not.

The most important thing before you start writing is correctly identifying which of the 3 main situations applies: overdue rent, a lease with no fixed term that you want to end normally, or a fixed-term lease that's about to expire. Choosing the wrong situation is the starting point for most of the problems explained in the next section.

Step 1: Correctly Identify Your Situation Before You Start Writing

The document you need to send and the legal timeframe both depend entirely on the situation. Choosing the wrong situation from the start can render the termination legally ineffective.

Title 5 of the Civil and Commercial Code, on the lease of property, clearly separates lease termination cases by reason, as follows:

Case 1: Overdue rent. When a tenant fails to pay rent on time, the landlord cannot terminate the lease immediately. A demand letter must be sent first, giving the tenant at least 15 days from the date of receipt, under Section 560.

Case 2: A lease with no fixed term. When either the landlord or tenant wants to end the lease with no fault on either side, at least one rent payment cycle of advance notice is required, but no more than 2 months, under Section 566.

Case 3: A fixed-term lease that has reached its end date. Generally, the lease terminates automatically once the agreed term ends, with no advance notice required, under Section 564.

Notice that all 3 cases operate under entirely different legal mechanisms. Overdue rent always requires a demand letter first; a lease with no fixed term has nothing to do with unpaid rent at all — it's simply a notice to end the lease normally; and a lease that has reached its fixed term doesn't legally require "termination" at all — though sending a courteous notice remains good business practice, not a legal requirement.

To understand how far documents sent online are legally valid in Thailand, read the full guide

Step 2: Write the Overdue Rent Demand Letter

The demand letter must give the tenant at least 15 days from the date of receipt to pay the outstanding rent, before the landlord has the legal right to terminate the lease.

A proper demand letter structure should include the following elements, in order:

1. Header — the names and addresses of the landlord and tenant, with the date the notice is issued.
2. Contract reference — the date the lease was made, the contract number (if any), and the leased property.
3. The facts — the amount of overdue rent, the outstanding payment periods, and the total amount due.
4. A clear demand — the number of days given to pay, counted from the date of receipt, no less than 15 days.
5. Consequences of non-compliance — stating that if payment isn't made within the deadline, the landlord has the right to terminate the lease and may pursue further legal action.
6. Signature and contact information of the landlord, so the tenant can respond.

This document structure aligns with general guidance from Thai law firms (Sarutlawyer).

A point that requires particular caution — and one that most explanations online don't clearly address — is that the 15-day period counts from the date the tenant receives the letter, not the date it was sent. If sent by ordinary mail without proof of receipt, the landlord may not be able to prove when the tenant received the notice, which could throw off the day count and affect the validity of the termination later.

Step 3: Write the Lease Termination Notice

For overdue rent cases, the termination notice can only be sent once the deadline in the demand letter has passed and the tenant still hasn't paid. For a lease with no fixed term, this notice is used to end the lease according to the legally required notice period.

A proper lease termination notice structure should include the following elements:

1. Header — the parties' names and the date the notice is issued, same as the demand letter.
2. Grounds for termination — clearly state whether it's an overdue rent case (referencing the prior demand letter) or a standard notice to end a no-fixed-term lease, with reference to the relevant contract terms.
3. Effective termination date — a clear date on which the lease will end.
4. Timeframe for the tenant to vacate the property — leases typically already set out a move-out period; check the contract terms before setting the date in the notice.
5. Warning of next steps — if the tenant doesn't comply, further legal action may be needed to evict them.

An important distinction is that for a fixed-term lease that has reached its natural end, a termination notice is generally not legally required at all, since the lease terminates automatically when the term ends, under Section 564. That said, sending a courteous confirmation notice before the end date remains good practice, to reduce misunderstanding and help plan the handover of the property — but it should be presented as a practical recommendation, not a legal requirement.

For a lease with no fixed term, the required notice period must be at least one rent payment cycle, but doesn't need to exceed 2 months, under Section 566. A common misconception is thinking 2 months' notice is always required, when the law sets that as a maximum ceiling, not a fixed minimum requirement.

Step 4: How to Send the Notice So You Can Prove the Tenant Received It

The method used to send the notice determines whether the landlord can prove when the tenant received it — a point where many cases end up at a disadvantage in court without realizing it.

There are 2 generally accepted delivery methods: registered mail with return receipt, which provides a receipt confirming when it was received, and hand delivery with at least 2 witnesses co-signing to confirm delivery, along with the tenant's signature acknowledging receipt of the document (Legardy).

On the other hand, sending a message via LINE or SMS alone may not be clear enough to serve as evidence confirming that the tenant received and understood the notice's content, especially when there's no identity verification of the recipient or a clear accompanying timestamp. Read the full guide on the evidentiary weight of electronic evidence in Thai courts

At this point, Jabmue doesn't yet have a ready-made template specifically for a lease termination notice or overdue rent demand letter. What Jabmue can help with is using a blank document editor to lay out the notice cleanly, with reusable variable fields for names, amounts, and dates. More importantly, it provides document delivery with a timestamped audit trail recorded at every step — from when it was sent, when the recipient opened it, and when any action was taken on the document. This timestamp data strengthens the evidentiary weight, not a guarantee confirming when the notice reached the tenant, but it doesn't guarantee the legal completeness of the termination, and it isn't equivalent to registered mail with return receipt in every case.

Step 5: If the Tenant Still Doesn't Pay or Won't Move Out

If the legal deadline has passed and the tenant still hasn't responded, the next step is pursuing eviction through the courts — not taking back the property yourself.

An eviction lawsuit generally begins with filing a claim in court, and the time and cost involved vary depending on the complexity of each case. Some sources estimate the process may take around 6 to 12 months, with costs of roughly ฿15,000 to ฿50,000 (Legardy). This figure is only preliminary reference information from a secondary source, not officially verified data — the actual time and cost depend on the specific circumstances of each case.

A point that must be emphasized clearly: a landlord should never change the locks, cut off water or electricity, or take any action to force a tenant out of the property on their own, even if there are valid grounds for termination. Doing so can carry serious legal risk for the landlord. The correct approach is to proceed only through the court process.

Common Mistakes

The most common mistake is sending a termination notice immediately without first sending the 15-day demand letter, which can render the termination legally incomplete.

• Confusing the demand letter with the termination notice — many people send one instead of the other, mistakenly thinking they're the same document.
• Counting the timeframe from the date sent, rather than the date received — throwing off the deadline stated in the notice.
• Using LINE or SMS messages as the sole evidence of notice, without any other method to confirm the timing and identity of the recipient.
• Forgetting to clearly reference the relevant contract terms, leaving the notice disconnected from the actual lease agreement.
• Taking back the property without going through the court process, such as changing the locks, which carries high legal risk for the landlord.

What You Should End Up With When Done Correctly

A properly written and sent notice gives the landlord a complete set of documents ready to use, should the situation require court proceedings later.

At the end of the process, the landlord should have: copies of the demand letter and/or termination notice actually sent, clearly timestamped proof of receipt, and all supporting documents ready to use if an eviction lawsuit becomes necessary in the future.

Frequently Asked Questions

What's the difference between a demand letter and a lease termination notice?

A demand letter is used to warn a tenant to pay overdue rent within a set deadline, while a termination notice is used once that deadline has passed and the tenant still hasn't paid, or for a standard notice ending a no-fixed-term lease. The two documents serve entirely different purposes and are used at different times.

How many days' notice is required to terminate a lease?

It depends on the situation. For overdue rent, at least 15 days' notice is required from the date the demand letter is received, under Section 560. For a lease with no fixed term, at least one rent payment cycle of advance notice is required, but no more than 2 months, under Section 566. For a fixed-term lease that has reached its end date, no advance notice is generally required, under Section 564.

Can I terminate a lease with just a LINE message?

Sending a LINE message alone may not be clear enough to serve as evidence confirming the tenant received and understood the notice, especially without a timestamp or identity verification of the recipient. It's recommended to combine it with another method that more clearly confirms when it was received.

If a lease expires at the end of its term, do I need to notify the tenant in advance?

Generally, no. A fixed-term lease terminates automatically once the term ends, under Section 564. That said, sending a courteous confirmation notice before the end date remains good business practice, to reduce misunderstanding between both parties.

Does the Debt Collection Act apply to a landlord collecting overdue rent themselves?

Conclusion

Writing a proper lease termination notice and overdue rent demand letter starts with clearly distinguishing between the two documents and correctly identifying which of the 3 main situations applies: overdue rent, a lease with no fixed term, or a fixed-term lease that has reached its end date.

Key points to remember:

• There are 2 different documents, used at different times.
• Overdue rent requires a demand letter first, giving at least 15 days' notice.
• A lease with no fixed term requires at least one rent payment cycle of advance notice, but no more than 2 months.
• A fixed-term lease that has reached its end date generally requires no advance notice.
• The delivery method affects your ability to prove when the tenant received the notice.

Once you understand the correct structure, the next step is creating the actual document. Try Jabmue free — create your notice from the blank document editor, and send it with a verifiable, timestamped delivery record

If you need to draw up a bilingual Thai-English condo lease agreement from scratch, read the full guide at the Condo Lease Agreement guide. And for real estate agents who need a proper broker agreement, read more at the Real Estate Broker Agreement guide.

How do real estate agents use Jabmue to manage lease agreements and related documents?

This content is general information, not case-specific legal advice. Please consult a lawyer or legal advisor before proceeding.