You are using an outdated browser and your browsing experience will not be optimal. Please update to the latest version of Microsoft Edge, Google Chrome or Mozilla Firefox. Install Microsoft Edge

May 28, 2024

Case Dismissed: The Impact of the Phinai Law on Ongoing Criminal Cases

Under Thai law, namely the Criminal Procedural Code, an injured person may bring a criminal case to a criminal court without having a public prosecutor file the case for him or her. After the court conducts an inquiry into the case, the court considers whether to accept the case for further trial and determine whether the defendant should be penalized accordingly. Private parties involved in certain types of cases, such as labor disputes or shareholder disputes, may find this a common channel to pursue.

Criminal law in Thailand recently underwent a significant change, as new legislation changed numerous criminal offenses to become phinai-fine offenses instead. However, as this is a relatively new development, there are still instances in which plaints involving phinai fines are still being submitted to the court by these private injured persons as criminal cases. But this raises the issue of whether the court can proceed with such cases.

For over a year, Thailand has enforced the Act on Phinai Fine Proceedings B.E. 2565 (2022) (ACFP) as a new legal measure to decriminalize certain types of fines for criminal penalties with less-serious offenses to phinai offenses, which results in phinai-related offenders having to pay only fines instead of facing the entire criminal procedures and penalties under the Thai Penal Code and Criminal Procedure Code, including bail submission, travel restrictions, imprisonment, and a criminal record.

What happens to ongoing trials in court for phinai offenses?

The ACFP automatically changed criminal offenses under 204 pieces of legislation, including certain offenses under the Bankruptcy Act B.E. 2483 (1940), the Determining Offenses Relating to Registered Partnership, Limited Partnership, Limited Company, Association, and Foundation Act B.E. 2499 (1956), the Labor Relations Act B.E. 2518 (1975), the Consumer Protection Act B.E. 2522 (1979), the Public Limited Companies Act B.E. 2535 (1992), and other legislation listed in the ACFP, to be phinai offenses. Once the ACFP took effect, many of these common white-collar criminal offenses were no longer criminal offenses but became phinai offenses. The practical effect of this is that many offenses are no longer considered crimes.

One of the effects of this change is that the ongoing trials for these offenses at the court are changed into phinai proceedings falling under the guidelines provided in the Regulation of the President of the Supreme Court on Trial for Phinai Cases B.E. 2565 (2023).

This regulation includes procedures and guidelines for proceeding with phinai cases that are designed explicitly for phinai offenses, such as in-absentia and asynchronous trials, paper-based hearings, and electronic proceedings. The regulation also provides for the notification of the judgment in writing without requiring the parties to attend a judgment hearing. These procedures and guidelines for phinai cases result in proceedings that are more flexible, more convenient, and faster than proceedings in civil and criminal cases.

In contrast to the Criminal Procedural Code, this regulation has a limited definition of “plaintiff” for the purposes of a phinai case. Specifically, articles 3 and 11 of the regulation provide that the plaintiff must be a “public prosecutor or government official. This narrows the scope of the eligible group of people who can file a phinai complaint with the court. These articles are designed to align with section 23 of the ACFP should the phinai offender refuse to accept the phinai accusation or to pay the phinai fine, in which case the government official must summarize the facts and the supporting documents, providing a legal basis, and send the final report to the public prosecutor to file a complaint with the court unless the legislation stipulates otherwise. This results in the plaintiff in the phinai case being narrowed down to be a public prosecutor or government official, which in effect would reduce the number of cases in which an injured person files a case directly with the court as a bargaining or pressure tool against the offender, such as offenses relating to labor disputes, shareholder disputes, director disputes, and so on.

However, a phinai accuser can still supplicate the allegation or bring its grievance through a government official so that the phinai offender can be fined. A phinai case could also be brought to court through a government official and the public prosecutor’s determination.

What if the plaintiff is not a prosecutor or government official?

The impact of section 23 of the ACFP and articles 3 and 11 of the regulation mentioned above is that if the plaintiff is not a public prosecutor or government official, the court has no other option but to dismiss the case on the grounds that the plaintiff has no authority to file a phinai case against a phinai offender. This will result in the court not accepting the case for trial.

Still, we cannot deny that the ACFP and the regulation are new procedural laws that the courts and most litigators may not have experienced or have in-depth knowledge of. Consequently, it is advised to seek local expert consultants to identify and explain the details or the updates related to the ACFP and the regulation and to analyze the strategy for ongoing phinai cases in court.

RELATED INSIGHTS​ 

September 28, 2026
Thailand has expanded the mandatory use of the Electronic Government Procurement (e-GP) system to cover submissions of procurement appeals to all government agencies subject to the Public Procurement and Supplies Administrative Act B.E. 2560 (2017) (Government Procurement Act). The expansion, which was set out in an official circular dated September 16, 2026, from the Public Procurement and Supplies Administrative Ruling Committee, takes effect on October 1, 2026. Notable Changes Under the expanded framework, bidders challenging an e-bidding or selective-method procurement result must file their appeal exclusively through e-GP within seven working days of the result being announced by the Comptroller General’s Department. While the system accepts filings around the clock during that window, submissions on the final day must be fully completed by 16:30 according to the e-GP system clock—merely starting a draft or uploading materials before the cutoff does not count as a confirmed submission. Government agencies that disagree with an appeal, in whole or in part, will also report their findings and supporting documents to the Appeals Committee through e-GP using the prescribed Appeal Opinion Report, also within seven working days of receipt. Withdrawals of appeals must likewise follow prescribed e-GP steps that vary depending on whether the matter is still under agency review, has been forwarded to the Appeals Committee, or has already been resolved. Excluded Categories Certain categories of procurement are not subject to the new guidelines on filing appeals electronically. These include: Procurement of supplies for confidential government use. Procurement conducted by government agencies operating overseas where the bidder is a foreign legal entity with no legal representative in Thailand, or where the bidder is a non-Thai national. Consulting service procurement under chapter 7 of the Government Procurement Act Design or construction supervision procurement under chapter 8 of the Government Procurement These exclusions apply
September 23, 2026
Arbitration under Thai law rests on consent. Section 11 of the Arbitration Act B.E. 2545 (2002) requires an arbitration agreement to be in writing and signed by the parties. This may also be satisfied by communications, an unchallenged allegation in pleadings, or incorporation by reference to a document containing an arbitration clause. A non-signatory cannot, as a general rule, be compelled to arbitrate merely because it participated in the transaction, received a benefit, or belongs to the corporate group of a signatory. Thai law nevertheless permits arbitration agreements and awards to affect third parties indirectly in limited circumstances. Under section 24, an arbitration clause is separable from the main contract; the invalidity of the contract does not invalidate the clause. In Supreme Court Judgment No. 3918/2563, an apparent sales contract concealed a construction contract and was void under the Civil and Commercial Code. However, the concealed construction contract and written arbitration clause remained effective. The tribunal had jurisdiction, and its award was enforceable under the Arbitration Act. Under the Arbitration Act, when a claim or liability is validly transferred, the transferee is bound by the related arbitration agreement. This includes assignment, transfer of obligations, legal succession, and subrogation. Depending on the facts and contract and agency law, consent may arise through execution by an authorized agent, ratification, assumption of obligations, or conduct accepting the contract and its arbitration clause. Thai law respects separate corporate personality. The group-of-companies doctrine has no statutory basis under the Arbitration Act, while alter egos or sham allegations require compelling evidence and an identifiable legal basis. Supreme Court Judgment No. 9161/2568 illustrates the procedural treatment of non-signatories. A consultancy contract required LCIA arbitration seated in Dubai. When the employer sued a consultant and his spouse in Thailand concerning a housing loan, the court disposed of
September 4, 2026
Thailand’s cabinet has approved two draft amendments aimed at improving labor-related judicial proceedings. The proposed amendments to the Act on the Establishment of Labor Courts and Labor Case Procedure B.E. 2522 (1979) and the Act on Procedures for Human Trafficking Cases B.E. 2559 (2016) are intended to make the process more efficient, appropriate, and fair. Key elements of these proposed amendments are outlined below. Expansion of Labor Court Jurisdiction Under the current framework, labor courts generally hear labor disputes, while criminal offenses under labor laws are handled separately. Matters involving both labor and criminal issues may therefore require the parties to pursue proceedings before different courts. To address this, the proposed amendments would expand the jurisdiction of labor courts to cover certain criminal offenses under labor laws. The government states that the change is intended to allow related issues to be heard by judges with expertise in labor law and to reduce the need for parallel proceedings. The proposed amendments also set out the following rules for cases involving multiple offenses. Where a single act gives rise to multiple offenses and at least one of those offenses falls within the jurisdiction of the labor court, the labor court may hear the related offenses as part of the same case. Where multiple connected acts give rise to different offenses, the labor court may hear the matters together or transfer part of the case to the appropriate court, taking into account convenience and the interests of justice. Criminal Offenses Covered The proposed amendments would extend labor court jurisdiction to criminal offenses under 11 labor-related laws, including laws concerning: Home workers protection Labor protection Labor protection in fisheries work Employment and job-seeker protection Management of foreign workers Social security Occupational safety, health, and working environment Compensation Maritime labor State enterprise labor relations
August 24, 2026
Significant economic challenges facing Thailand in recent years have placed financial pressure on both individuals and businesses. As a result, many debtors may find themselves unable to meet their repayment obligations, leading to bankruptcy proceedings. When an individual or corporate debtor in Thailand is subject to bankruptcy proceedings, the Thai Bankruptcy Act B.E. 2483 (1940) provides a legal framework for collecting a debtor’s assets and using them to repay creditors. Under the Bankruptcy Act, creditors wishing to recover outstanding debts must file a debt repayment application (DRA), which is the primary mechanism for asserting claims in bankruptcy proceedings. However, the filing of a DRA is subject to specific legal requirements, procedural rules, deadlines, and supporting documentation. Failure to comply with these requirements may adversely affect a creditor’s ability to recover its claim. This article highlights the key considerations that creditors should be aware of when filing a DRA in a bankruptcy case in Thailand. Filing a DRA In a bankruptcy case, after the court issues an absolute receivership order, the debtor loses the authority to manage or dispose of its assets. Control over the debtor’s assets is transferred to the official receiver, a government official responsible for administering the bankruptcy estate in accordance with the Bankruptcy Act. Creditors seeking repayment of their debts must file a DRA with the official receiver within two months of the absolute receivership order being officially published in the Government Gazette. For creditors outside of Thailand, the official receiver may extend the filing period by up to an additional two months. These filing deadlines are strictly enforced. Failure to file within the prescribed period may result in the claim being barred, except in limited circumstances permitted by the Bankruptcy Act. Where a late filing is accepted due to force majeure, the creditor may only