Debt Collection Letters and Notices in Thai Juristic Persons: What They Mean and How to Use Them

When common area fees go unpaid, juristic persons need to know how to follow up properly. What is a debt collection letter? How does it differ from a formal notice or a lawyer's letter? Does it have to be issued by a lawyer? And how much legal weight does an email or E-Notice actually carry? These questions matter for juristic persons managing project cash flow, and for co-owners who want to verify their balance before paying.

This article explains the meaning and differences between each type of document, what information should be included, who has authority to issue them, which delivery channels provide a traceable record, and how to sequence the follow-up process from initial reminders through to a lawyer's letter. It also covers what a recipient should do upon receiving one. The focus is on condominium juristic persons and housing estate juristic persons in Thailand.

This article is for general information only and does not constitute legal advice. For specific situations, consult a qualified lawyer or legal professional.

What Is a Debt Collection Letter

A debt collection letter is a document sent by a creditor or authorized representative to a debtor, formally stating the debt details, the amount due, the payment deadline, and the payment channel. In practice it may appear under different names such as หนังสือทวงถาม (demand letter), จดหมายทวงหนี้ (debt collection letter), หนังสือติดตามทวงหนี้ (follow-up collection letter), or หนังสือบอกกล่าวทวงถาม (notice of demand).

The value of a debt collection letter lies not in what it is called but in what it does: it communicates a claim clearly and creates a record of what was sent, to whom, when, and through which channel. That record helps reduce disputes and can be used as supporting evidence if negotiation or legal proceedings become necessary.

That said, it should not be assumed that every debt collection letter automatically puts the debtor in default from the date of receipt. Under Section 204 of the Civil and Commercial Code, if a payment date is set by calendar date, the debtor may be in default once that date passes without requiring a prior warning. If no specific date is set, a demand may be a necessary step to establish default. For common area fees, the applicable statute and the project's own regulations must also be considered alongside the general rule.

How Do Debt Collection Letters, Demand Letters, and Notices Differ

These terms are often used interchangeably in everyday communication, but they have different meanings and scopes in certain contexts.

A debt collection letter or demand letter (หนังสือทวงหนี้ or หนังสือทวงถาม) is directed at recovering a debt that has already fallen due, such as unpaid common area fees, rent, or goods owed.

A notice (หนังสือบอกกล่าว or Notice) has a broader meaning. It may be used to demand payment, require compliance with a contract, terminate a contract, or communicate the exercise of a legal right. Not every notice is a debt collection letter.

The word "Notice" in Thai property contexts is often used to refer to formal notices, particularly those issued by lawyers. However, the name alone does not automatically give the document greater legal effect. What matters is who sent it, whether that person has authority, what the content says, how it was delivered, and what evidence of receipt exists.

Regardless of whether a document is headed "Notice," หนังสือบอกกล่าว, or หนังสือทวงถาม, the content should be the primary consideration: is it a demand for payment, a notice to perform under a contract, or something else? The heading on the document alone is not the deciding factor.

What Should a Common Area Fee Demand Letter Include

A well-prepared demand letter for common area fees should allow the recipient to verify the amount and take action immediately. It should generally include the following:

• Name and contact information of the juristic person or sender
• Name of the recipient, unit or house number, and contact address
• Details of the outstanding common area fees, including billing periods, due dates, and an itemised breakdown
• Any additional charges or penalties if applicable, with the basis for calculation stated
• Total amount due as of the date of issue
• Payment deadline and available payment channels
• Contact channel for the recipient to dispute the amount or request supporting documents
• The steps that may follow if payment is not made, stated factually and without threatening language
• Date of issue, name, position, and signature of the authorised signatory

Before sending, verify the figures against the accounts receivable records, invoices, payment history, and the project's regulations. This is especially important for the additional charges on condominium common area fees, which must be assessed against the Condominium Act and the juristic person's own regulations. These charges should not be described as "interest" or "fines" without a proper legal basis.

Who Has Authority to Issue and Sign a Demand Letter

A juristic person can issue a demand letter itself. There is no general legal requirement for every letter to be issued by a lawyer. However, the person signing must have authority to act on behalf of the juristic person or must hold a valid power of attorney.

For condominium juristic persons, the Condominium Act designates the manager as the representative of the juristic person. For other types of projects, the relevant regulations, certificates of registration, committee resolutions, and powers of attorney should be reviewed before any letter is signed. It should not be assumed that the committee chairperson can always sign on behalf of every type of project.

When using a lawyer to send the letter, there should be a clear mandate or power of attorney in place. A lawyer's letter signals that the matter is being handled more formally and that legal action is being considered seriously, but it does not make an incorrect amount correct. The recipient still has the right to verify the figures and raise a dispute with supporting evidence.

Which Delivery Channels Can Be Used

Registered Post with Return Receipt

This is the most commonly used method because it provides evidence of posting and delivery. Keep the copy of the letter, proof of posting, delivery status, and return receipt together as a set. A return receipt is one piece of evidence but does not by itself confirm that the content was correct or that the relevant authorized person received and fully understood every item in all circumstances.

In-Person Delivery

The letter can be delivered directly to the recipient who then signs to acknowledge receipt. Record the date, time, name of the recipient, and name of the person delivering. If the recipient refuses to accept the document, record the facts of what happened and consult a professional about the appropriate next step.

Email, App, or Electronic Channels

Section 14 of the Electronic Transactions Act supports the use of electronic data for expressions of intent or notices between a sender and recipient. However, whether a specific email, LINE message, or app notification can be relied upon depends on whether the applicable law or project regulations specify a delivery method, which electronic address is used, whether the sender has authority, and what evidence exists of delivery, access, and completeness of the content.

A screenshot showing that a message was sent is only part of the picture. If the matter involves a significant amount or has litigation potential, the delivery method and evidence approach should be planned together with a lawyer from the outset.

What Is E-Notice

In general usage, E-Notice refers to the preparation or delivery of a notice in electronic form. The term does not describe a single standardised system with consistent features across every provider. It is worth checking the scope of any specific system: who issues the document, where the balance figures are drawn from, what records are kept of actions taken, and how the process connects to any subsequent legal steps.

Within Silverman, the term E-Notice refers to the common area fee follow-up process within the Silverman Application, which connects debtor data with legal services. The Silverman debt collection system includes alerts when follow-up deadlines are reached and provides a service for automatic issuance of demand letters by a law firm. The scope of the service and delivery method for each case should be confirmed with the team before use. E-Notice should not be interpreted as a universal substitute for all types of legal documents or procedures.

How Should Juristic Persons Follow Up on Common Area Fees

There is no single sequence that fits every project, but working systematically helps keep records consistent and reduces disputes. The following is one example of how the process may be structured.

1. Verify the Balance and Debtor Information

Before any follow-up begins, confirm that the invoice, due date, payment records, additional charges, and contact details are accurate. If the information is incorrect from the start, moving quickly on the letters will not make the process more credible.

2. Send a Reminder When the Due Date Has Passed

Use the channels the project already uses, such as the app, SMS, email, or a payment notice, with polite wording that includes verifiable information. Some co-owners may have forgotten to pay or not yet received their invoice. Formal legal language is not always necessary in the first round of follow-up for every case.

3. Send a Formal Demand Letter for Common Area Fees

If payment is still not made, issue a formal demand letter stating the amount, deadline, payment channel, and channel for disputes. Keep a copy and evidence of delivery. The letter should not state that it marks the start of the additional charge calculation in all cases, because the date from which additional charges are calculated must follow the law, the project's regulations, and the facts of each specific situation.

4. Send a Demand Letter Through a Lawyer

When internal follow-up has not produced results or there is a legal dispute, sending a demand letter through a lawyer allows the amount, the authority of the person making the claim, the limitation period, and the pre-litigation steps to be reviewed systematically. The letter should state the facts and the steps that can actually be taken, and should avoid threatening language, public shaming, or disclosure of debt information to uninvolved parties.

5. Negotiate or Pursue Legal Action as Appropriate

If the co-owner responds, the juristic person may consider accepting full payment or a repayment plan within the scope of the project's authority and criteria. If agreement cannot be reached and legal action is necessary, a lawyer should assess the documentation, limitation period, costs, and overall viability before proceeding.

What Should a Recipient Do Upon Receiving a Demand Letter

The recipient should review the document carefully rather than ignoring it. Check the creditor's name, debt details, billing periods outstanding, payment deadline, and contact channel. Then compare the information against any receipts or payment records already held.

If the amount is correct, contact the juristic person to pay or to ask about a repayment arrangement as soon as possible. If the amount is incorrect, raise the dispute in writing with supporting evidence and keep copies of all correspondence. If there is any uncertainty about whether the sender has authority, or whether the demands go beyond what the law and the project's regulations allow, consult a lawyer before agreeing to any terms or making payment.

Summary

Debt collection letters and demand letters are used to follow up on outstanding debts. A notice (หนังสือบอกกล่าว) has a broader scope and may be used for other types of communication beyond debt recovery. The effect of a document does not depend on its title alone. Content, the authority of the sender, delivery method, evidence, and the applicable law all need to be considered together.

For juristic persons following up on common area fees, the most important starting point is accurate debtor records, a systematic approach to each step, and documentation of every stage.

Silverman provides a common area fee debt tracking system developed in partnership with House and Condo Lawyers Co., Ltd., with reminders when follow-up deadlines are due and a connected service for issuing demand letters through a law firm, helping juristic persons reduce paperwork and track progress in one place. Silverman is a complete juristic person accounting and management platform for condominiums, housing estates, and office buildings. For more information, visit silverman.app or call 08-1442-6888.