A police complaint in Thailand does not begin merely because someone visits a police station. The legal result depends on what the victim communicates and whether the record shows a present intention to have the offender punished. A daily record made only “for evidence” may preserve a chronology, but it may not be a valid criminal complaint—an especially serious risk where a compoundable offence must be complained of within three months.
This distinction is often discovered too late. A victim leaves the station holding a copy of the daily record and assumes an investigator is pursuing the matter. Months later, the victim learns that no formal complaint was received or the police regarded the dispute as civil. The correct response is to examine the document, the victim’s expressed intention and the legal nature of the alleged offence—not merely the heading printed on the paper.
Quick answer: daily record entry or formal criminal complaint?
A daily record entry normally records that a person reported an event, lost document or dispute. If it shows no present intention to have an offender punished, it is not necessarily a complaint under Thai criminal procedure.
A formal criminal complaint is an allegation made by an injured person to an authorised official that an offence caused the person harm, with the intention that the offender be punished. This is the definition in Section 2(7) of the Criminal Procedure Code.
The label is not decisive. A document headed “daily record” can still amount to a valid complaint if its substance and surrounding circumstances establish the required intention. Conversely, visiting a police station, describing events and receiving a document does not by itself prove that a valid complaint was made.
Comparison: recording an incident and making a criminal complaint
| Issue | Daily record for evidence | Formal criminal complaint |
|---|---|---|
| Purpose | Preserves the fact that an event or report was made on a particular date | Alleges an offence and asks the authorities to pursue punishment |
| Required intention | No present intention to prosecute may be shown | The injured person presently intends that the offender be punished |
| Police action | May remain an administrative record unless the facts independently require action | Triggers the criminal-procedure duties applicable to a complaint and investigation |
| Compoundable offences | Does not satisfy the three-month requirement if it lacks prosecutorial intention | Satisfies the complaint requirement if validly made in time |
| Key evidence | Wording, returned documents and any statement that the reporter will decide later | Full allegation, request for action, statement, receipt or complaint number, and investigative steps |
What makes a complaint legally valid?
Section 2(7) of the Criminal Procedure Code focuses on four elements:
- The complainant is an injured person or someone legally authorised to act for that person.
- An allegation is made to an authorised official under the Code.
- The alleged conduct caused injury to the complainant.
- The allegation is made with the intention that the offender be punished. The offender need not already be identified.
Under Section 123, a complaint may be written or oral. If made orally, the official must record it in writing. The exact phrase “prosecute to the fullest extent of the law” is not a magic formula. Clear wording is useful evidence, but courts examine the document and surrounding conduct as a whole.
A report saying that the person is recording the matter only as evidence, intends to demand payment personally first, and will return later if payment is not made may show that there was no present intention to prosecute. Supreme Court Judgments Nos. 16/2522 and 986/2525 illustrate this substance-over-label approach.
The three-month danger for compoundable offences
Section 96 of the Penal Code provides that, for a compoundable offence, the injured person must make a complaint within three months from the date on which the person knows both the offence and the identity of the offender. If this requirement is not met, the criminal case becomes time-barred under that provision.
Examples commonly encountered include certain forms of fraud, misappropriation, defamation and property damage. Classification must be checked against the particular charge and facts because exceptions and aggravated forms may change the result.
A valid complaint within three months satisfies this special time limit. It does not “stop” every criminal limitation period: the ordinary limitation periods under Section 95 and other deadlines remain separate issues. If there is doubt about the date of knowledge or whether a record amounted to a complaint, obtain legal advice immediately.
Can police investigate without a victim’s complaint?
For a non-compoundable or public offence, the authorities may investigate when they lawfully learn of the offence; a valid complaint from the victim is not always a prerequisite. Serious public offences do not become private matters merely because a victim initially asked only for a record.
For a compoundable offence, Section 121 of the Criminal Procedure Code generally prevents an inquiry officer from investigating unless a valid complaint has been made. This makes the victim’s intention and the three-month period critical.
Why might the police say the matter is civil?
Failure to pay a debt or perform a contract is not automatically fraud. A criminal offence requires proof of every statutory element, such as dishonest deception existing at the relevant time. A later breach, financial difficulty or disagreement over contractual interpretation may support a civil claim without establishing criminal liability.
The police cannot order a debtor to pay civil damages merely because a creditor reports the dispute. At the same time, describing a dispute as “civil” is not conclusive if the evidence supports a criminal offence. The pre-transaction representations, documents, flow of money and intention at the time should be assessed carefully.
What to do at the police station
- State your present intention clearly. If you want criminal proceedings, say that you are making a criminal complaint and want the offender punished.
- Explain the complete facts. Identify the conduct, dates, loss, available offender details, witnesses and supporting material. Never exaggerate or knowingly give false information.
- Read the record before signing. Check that it accurately states the allegation, your injury and present intention. Request corrections where necessary.
- Request a copy and receipt details. Keep the receiving officer’s name and rank, station, date and time, reference or complaint number, and copies of documents delivered.
- Ask what happens next. Confirm the responsible investigator, further evidence required and follow-up date.
- Protect the original evidence. Preserve messages, transaction records, contracts, recordings and electronic files in their original form, with lawful backups.
A criminal-case number can help confirm that the matter entered the case system, but practice may differ where the offender is unknown. Absence of a number at the first visit should prompt immediate clarification; it does not alone determine whether a legally valid complaint was made.
What if police refuse to receive or progress the complaint?
Create a careful record: note who received the information, what was said, what documents were offered and the reason given for refusing or delaying action. Ask to speak with the supervising inquiry officer and request written acknowledgment where available. The matter may also be escalated through Royal Thai Police complaint channels, and urgent advice should be obtained about lawful alternatives, including a private prosecution where appropriate.
Do not assume that delay automatically constitutes an offence under Section 157 of the Penal Code. Liability requires proof of all elements, including unlawful performance or omission in an official duty and the required special intent to cause damage, or dishonest intent. Negligence, a legal disagreement or an administrative mistake is not automatically Section 157.
Frequently asked questions
Is the phrase “prosecute to the fullest extent of the law” mandatory?
No. It is useful wording, but the legal question is whether the injured person’s allegation showed a present intention for the offender to be punished. Courts consider the full record and surrounding circumstances.
Can a daily record itself be a valid complaint?
Potentially yes. The document’s title does not control. If the recorded allegation satisfies Section 2(7) and clearly shows the required intention, it may qualify. A record made only for evidence, with prosecution postponed until a later decision, generally creates the opposite inference.
If I reported a compoundable offence more than three months ago, is there any solution?
The first step is an urgent review of the document, the date you knew both the offence and offender, any authorised complaint already made, and whether the offence is truly compoundable. Do not assume either that the case is safe or necessarily lost without examining those facts. Separate civil remedies may have different limitation periods.
Does signing a daily record prove everything written by the officer is correct?
Your signature is important evidence that you acknowledged the recorded statement. Read it carefully and request corrections before signing. If it does not reflect what you said, document the discrepancy and obtain advice promptly.
Key takeaway
When reporting a suspected crime in Thailand, focus on substance rather than the paper’s heading. State whether you presently seek criminal action, confirm the record accurately reflects that intention, keep proof of receipt and identify the applicable deadline. For a compoundable offence, the three-month period under Section 96 can determine whether criminal proceedings remain available.
About the author: Siam Center Law Group Legal Team. We advise Thai and international clients on criminal complaints, police investigations, evidence preservation and criminal litigation in Thailand.
This article provides general information under Thai law as of 21 September 2026. It is not legal advice for a particular case. Offence classification, victim status, jurisdiction and limitation periods must be checked against the complete facts.
Official and legal references
- Thai Criminal Procedure Code, Sections 2(7), 121 and 123.
- Thai Penal Code, Sections 95, 96 and 157.
- Department of Groundwater Resources: Criminal Procedure Code compilation.
- Department of Special Investigation: Criminal Procedure Code.
- Royal Thai Police station guidance on crime reports and daily records.
- Supreme Court Judgments Nos. 16/2522 and 986/2525 on the intention required for a legally valid complaint.
