Civil litigation in Thailand is governed by a civil-law system in which codified statutes, principally the Civil Procedure Code (CPC) and the Civil and Commercial Code (CCC), set the rules of pleading, evidence, and remedy, while specialized procedural acts displace the CPC for consumer, labour, intellectual property, tax, bankruptcy, and family matters. The Thai courtroom is adversarial in form yet deeply inquisitorial in spirit. Judges actively manage cases, push parties toward settlement, weigh documentary evidence above oral testimony, and decide both fact and law without juries. Foreign litigants and Thai businesses alike often underestimate how procedural choices made at the very beginning of a dispute, including the choice of court, the wording of the plaint (kham fong, คำฟ้อง), the calculation of statutory deadlines, and the structuring of the demand letter, can determine the outcome long before the first hearing. This guide explains how civil litigation in Thailand works in practice, from pre-action conduct through enforcement and appeals, with the statutory references, time limits, court fees, and Supreme Court doctrine that practitioners rely on.

The Thai Court System and Its Hierarchy

Section 197 of the Constitution of the Kingdom of Thailand B.E. 2560 (2017) recognizes four judicial bodies exercising judicial power: the Constitutional Court, the Administrative Court, the Military Court, and the Court of Justice (ศาลยุติธรรม). Ordinary civil disputes between private parties fall within the jurisdiction of the Court of Justice, which is administered by the independent Office of the Judiciary and organized into three tiers: Courts of First Instance (ศาลชั้นต้น), the Court of Appeal (ศาลอุทธรณ์), and the Supreme Court, known by its Thai name as the Dika Court (ศาลฎีกา).

Courts of First Instance

The Courts of First Instance handle the vast majority of civil disputes. Three categories operate in parallel and are differentiated by the value or subject matter of the claim.

Kwaeng Courts (ศาลแขวง, district courts) hear small civil cases where the amount in dispute does not exceed THB 300,000, and follow streamlined rules under Sections 189 to 196 of the Civil Procedure Code that aim to dispose of matters quickly with minimal formality. Plaintiffs may file orally, and the court may render an immediate judgment. Provincial Courts (ศาลจังหวัด) sit in every province outside Bangkok and have unlimited civil jurisdiction over claims exceeding the kwaeng threshold. The Civil Court (Ratchada), the Civil Court of Bangkok South, the Min Buri Civil Court, and the Thonburi Civil Court exercise the equivalent general civil jurisdiction inside the Bangkok metropolitan area, with cases assigned according to the residential address of the defendant or the location of the cause of action.

Specialized Courts

Thailand has established five specialized first-instance courts so that technical or socially sensitive disputes are decided by judges with subject-matter expertise, often sitting with associate or lay judges drawn from the relevant profession. The table below summarizes their jurisdiction.

Family disputes are routinely directed to the Juvenile and Family Court, and our family disputes practice represents clients across divorce, custody, child support, and inheritance disputes. Patent infringement claims, invalidity actions, and related cross-border trade disputes are filed at the CIPITC, which is the venue addressed in our coverage of intellectual property disputes in Thailand. Insolvency and reorganization petitions are heard exclusively before the Central Bankruptcy Court, as discussed in our bankruptcy practice page.

The Court of Appeal and the Court of Appeal for Specialized Cases

Above the Courts of First Instance sits the Court of Appeal (ศาลอุทธรณ์), which is regionally divided into the Court of Appeal in Bangkok and Regions 1 to 9. Appeals from a specialized first-instance court do not go to the regional Court of Appeal but instead to the Court of Appeal for Specialized Cases, established in 2016, which has five divisions handling intellectual property and international trade, tax, labour, bankruptcy, and juvenile and family appeals. This venue ensures that subject-matter expertise carries through to the appellate level.

The Supreme Court (Dika Court)

At the apex sits the Supreme Court (ศาลฎีกา, Dika Court). Since the Civil Procedure Code Amendment Act (No. 27) B.E. 2558 (2015) entered into force on 8 November 2015, appeals to the Supreme Court no longer arise as of right. Under Sections 247 to 252 of the CPC, a litigant must petition for permission within one month from the reading of the Court of Appeal's judgment, and the Supreme Court will admit only cases involving important questions of law, conflicts of judicial interpretation, matters of public interest, or exceptional injustice. Court of Appeal judgments are otherwise final.

Sources of Thai Civil Procedure

The principal procedural statute is the Civil Procedure Code (ประมวลกฎหมายวิธีพิจารณาความแพ่ง), originally promulgated in B.E. 2477 (1934) and amended dozens of times since. Substantive private rights are codified in the Civil and Commercial Code, in force since B.E. 2468 (1925) and continuously amended. Specialized procedural regimes that displace the CPC in their respective fields include the Consumer Case Procedure Act B.E. 2551 (2008), the Class Action provisions inserted into the CPC by the Civil Procedure Code Amendment Act (No. 26) B.E. 2558 (2015), the Arbitration Act B.E. 2545 (2002), the Bankruptcy Act B.E. 2483 (1940), the Labour Procedure Act B.E. 2522 (1979), and the establishment acts of the specialized courts listed above. Where a specialized statute is silent, the CPC applies as the residual default. Authoritative Thai-language references are published on the Office of the Judiciary's portal at coj.go.th and on the Office of the Council of State's legislative database at krisdika.go.th.

Statutory Timeframes for Court Proceedings

The Timeframe for Judicial Proceedings Act B.E. 2565 (2022), published in the Government Gazette on 25 October 2022 and effective from 23 January 2023, requires every judicial body, including the Courts of Justice, to publish the time it should take to complete each procedural stage. Implementing the Act, the President of the Supreme Court issued the Judicial Regulation on the Timeframe for Consideration of Litigation Cases of the Court of Justice B.E. 2566 (2023) on 18 January 2023. The Regulation aims at one year for first-instance contested civil cases, six months to one year at the Court of Appeal, and one year at the Supreme Court for cases admitted on permission. Where a stage exceeds the prescribed timeframe, the parties may apply for an explanation, to which the court must respond within 15 days. The Act does not override case-management discretion, but it has visibly accelerated the pace of cases that previously stalled, particularly in commercial matters before the Civil Court.

Jurisdiction and Venue

Section 4(1) of the Civil Procedure Code provides that, as a rule, a plaint shall be filed with the court in whose territorial jurisdiction the defendant is domiciled, or with the court in whose territorial jurisdiction the cause of action arose. Where the dispute concerns immovable property, Section 4 ter requires filing at the court of the situs of the property regardless of the defendant's domicile. Parallel filing options frequently allow strategic choice between courts; choosing a forum closer to the bulk of evidence, witnesses, or assets can materially affect cost and pace. For a defendant who is not domiciled in Thailand and against whom no cause of action has arisen in Thailand, Section 4 tre permits the action to be filed at the court of the plaintiff's domicile or at the Civil Court in Bangkok. The plaintiff may not split a single cause of action between courts, and contractual choice-of-court clauses are recognized so long as they are not contrary to the public order.

Statutes of Limitation (Prescription)

Thai prescription rules are set out in Title VI, Book I of the Civil and Commercial Code (Sections 193/9 to 193/35) and in numerous specific provisions throughout the codes and special acts. Crucially, prescription is not raised by the court of its own motion. Under Section 193/29 of the CCC, the court may not dismiss a claim on prescription grounds unless the defendant pleads it. The practical takeaway for litigants is to calculate the deadline carefully and to file the plaint well before it expires.

Prescription may be interrupted by a written acknowledgement of the debt, by part payment, by the giving of security, or by the filing of a lawsuit, an arbitration claim, or a petition in bankruptcy proceedings. Once interrupted, the period begins to run afresh from the date of the interrupting event under Section 193/15 of the CCC. A demand letter alone does not interrupt prescription unless it elicits a written acknowledgement from the debtor.

Pre-Action Conduct

Although Thai civil procedure imposes no formal pre-action protocol equivalent to those in common-law jurisdictions, a properly drafted demand letter is virtually indispensable in practice. Several substantive provisions of the CCC, including those on default of the debtor (Section 204) and on accrual of interest (Section 224), require either a stipulated due date or a notice of demand before the debtor is placed in default and statutory interest begins to run. A demand letter also creates a documentary trail that strengthens later evidence, establishes good faith for the court, and unlocks pre-filing mediation under Section 20 ter.

Pre-Filing Court-Supervised Mediation

Since 7 November 2020, when the Civil Procedure Code Amendment Act (No. 32) B.E. 2563 (2020) entered into force, Thailand has offered free pre-filing mediation under Section 20 ter of the CPC. A party may petition the court to summon the counterparty for mediation before any plaint is filed. There is no court fee, the procedure is confidential, and if a settlement is reached the parties may apply for the court to issue a consent judgment that is immediately enforceable. The procedure is not available for claims exceeding THB 5 million, except for disputes over ownership of land or among heirs, and is excluded for matters concerning legal personality or the family rights of minors. Mediation may be conducted in person or, increasingly, online through the Court of Justice mediation platforms managed by the Thailand Mediation Center (ศูนย์ไกล่เกลี่ยวข้อพิพาท) under the Office of the Judiciary. For commercial disputes within the threshold, this tool can shorten months of litigation into a single hearing.

Initiating the Lawsuit

Filing the Plaint and Court Fees

Civil proceedings begin with the filing of a plaint (kham fong, คำฟ้อง), a written pleading that states the parties, the cause of action, the relief sought, and the amount of damages or value of the claim. The plaint must be drafted in the Thai language; foreign-language documents must be accompanied by a certified Thai translation under Section 46 of the CPC. The plaint must be signed by the plaintiff or by counsel holding a valid power of attorney in the Thai form (bai mob amnaj, ใบมอบอำนาจ).

Court fees are governed by Annex 1 to the Civil Procedure Code (the Court Fees Tariff, ตาราง ใ ท้ายประมวลกฎหมายวิธีพิจารณาความแพ่ง) and the related notification of the Office of the Judiciary on court fees. Fees are payable on filing and form part of the costs ultimately taxable against the losing party.

Indigent plaintiffs may apply for a fee waiver under Sections 155 to 156/1 of the CPC by submitting an affidavit of inability to pay; the application is heard ex parte and, if granted, the case proceeds without prepayment, subject to the court's power to order payment from the recovered amount. Court fees can be calculated on the official Court of Justice calculator at fees.coj.go.th/courtfees.

E-Filing through the CIOS Platform

Since 27 March 2020, the Court of Justice has operated the Court Integral Online Service (CIOS, ระบบบริการออนไลน์ศาลยุติธรรม) at cios.coj.go.th. Registered counsel can upload subsequent submissions, monitor case status, and receive electronic notifications across all Courts of Justice, including the specialized courts. A separate citizen e-filing portal at efiling3.coj.go.th/citizen permits litigants to file a plaint, answer, appeal, or Dika petition electronically, in conjunction with online payment of court fees. Documents must be in JPEG or PDF format, no larger than 10 MB per file, and at a minimum resolution of 200 dpi.

Service of Process

Once the plaint is accepted, the court issues a summons (mai riak, หมายเรียก) served by court bailiffs. Personal service is the default. Constructive service by posting at the defendant's residence and substituted service by publication, through registered mail, by Thai embassy or consulate, or by other means the court considers necessary, are permitted in defined circumstances under Sections 74 to 79 of the CPC. The defendant has 15 days to file the answer if served within Thailand, or 30 days from the date of service if the defendant is abroad and service is effected by international means under Section 83 octies. Failure to file an answer leads to default proceedings under Sections 198 to 204 and, after presentation of the plaintiff's evidence, to a default judgment that may be set aside on showing of excusable cause within 15 days from the date the defendant becomes aware of the judgment.

The Defendant's Answer

The answer (kham hai gan, คำให้การ) must specifically address each allegation. Under Section 177 of the CPC, allegations not denied are deemed admitted. A general denial is insufficient; the answer must respond paragraph by paragraph. A counterclaim (fong yaeng, ฟ้องแย้ง) may be raised in the same answer if it concerns the same transaction or is otherwise sufficiently connected to the principal claim, and a third-party complaint may be brought against persons not yet party to the action under Sections 57 and 58. The defendant pays the same percentage court fee on a monetary counterclaim as the plaintiff did on the original claim.

Joinder of Parties, Counterclaims, and Class Actions

Multiple plaintiffs or defendants may join a single proceeding where their rights or liabilities arise out of the same transaction or where the matters in issue are common to them, under Sections 57 to 60 of the CPC. Cross-claims between co-defendants and third-party complaints are permitted within the same statutory framework. The court has broad case-management powers under Section 21 to consolidate or sever claims in the interests of justice.

Class Actions

Sections 222/1 to 222/49 of the CPC, inserted by the Civil Procedure Code Amendment Act (No. 26) B.E. 2558 (2015) and effective from 8 December 2015, introduced a class action regime modelled in part on Federal Rule 23 of the United States. Class certification requires the court to find that the proposed class has identifiable members, common questions of law or fact, that a class action is more efficient than individual proceedings, and that the proposed representative party can fairly and adequately protect the interests of the class. Notice to class members is mandatory and is typically published in a major Thai newspaper for three consecutive days, with the court retaining discretion to require additional means, including online publication and direct mail. Damages are calculated on an aggregate basis. The court may award an incentive fee to class counsel of up to 30% of the recovery under Section 222/37, an exception to the general prohibition on contingency arrangements that has made class proceedings financially viable in consumer protection, securities, environmental, and unfair-trade-practice cases.

Provisional and Protective Measures

Provisional measures aim to preserve the status quo or to secure the eventual judgment against asset dissipation. The general framework appears in Sections 254 to 270 of the Civil Procedure Code, supplemented by parallel provisions in the specialized procedural acts. The plaintiff may file an application together with the plaint or at any time before judgment, including ex parte, but must demonstrate a prima facie meritorious case and a real, demonstrable risk of harm or asset dissipation. The applicant may be required to lodge security to protect the respondent against wrongful interim relief.

Pre-Judgment Attachment of Assets

Section 254(1) authorizes the court to seize or attach the property in dispute or the property of the defendant before judgment to secure the eventual award. The applicant must show that the defendant intends to put assets out of reach or has begun to do so. Attachment is registered with the relevant authority (the Land Department for immovable property, the Department of Business Development for shares, the Department of Land Transport for vehicles), and the defendant cannot deal with the asset without the court's leave.

Interim Injunction

Section 254(2) authorizes the court to issue a temporary injunction restraining the defendant from repeating or continuing a wrongful act or breach of contract during the pendency of the proceedings. Section 254(3) authorizes the court to direct a registrar to suspend registration, modification, or cancellation of registration affecting property in dispute, a particularly important remedy for share, land, and intellectual property disputes.

Provisional Arrest and Detention

Section 254(4) authorizes the provisional arrest and detention of the defendant where the plaintiff demonstrates that the defendant is about to flee the country or is concealing assets in a manner that would render any future judgment unenforceable. The remedy is rare in commercial practice but remains on the books and is occasionally invoked in fraud cases.

Our injunctions and restraining orders practice handles applications for the full range of interim relief under Sections 254 to 270, from urgent ex parte attachment of bank accounts to court orders preserving evidence in fraud and breach-of-contract cases.

Mediation and Settlement During Trial

Even after the plaint is filed, settlement remains a central feature of Thai civil procedure. Section 20 of the CPC empowers the court to attempt conciliation at any stage; in practice the first hearing is almost always devoted to mediation, conducted either by the trial judge or by a court-appointed mediator drawn from the Thailand Mediation Center. A settlement reduced to a court-recorded compromise (sanya prachakhom, สัญญาประนีประนอมยอม) has the force of a final judgment under Section 138 of the CPC and may be enforced through the Legal Execution Department in the same manner as a contested judgment. The advantages of settlement, including confidentiality, certainty of recovery, and avoidance of years of appeal, are powerful, and Thai courts measure their performance partly by mediation success rates.

Our mediation and conciliation practice supports clients through both pre-filing and in-court mediation, and our negotiation team prepares the strategic groundwork that often determines the outcome of the mediation hearing.

Parties to a commercial contract may also have agreed to arbitration before any dispute crystallizes. Where such an agreement exists, the court must, upon application by the defendant under Section 14 of the Arbitration Act B.E. 2545 (2002), stay the proceedings and refer the dispute to the agreed arbitral tribunal. Practical guidance on these tribunals is set out in our coverage of arbitration in Thailand and alternative dispute resolution.

Disclosure, Document Production, and Evidence

Thai courts do not have a discovery procedure comparable to those of common-law jurisdictions. Each party is responsible for gathering and producing the evidence supporting its case. There is no obligation of voluntary mutual disclosure, no depositions, and no party-driven interrogatories. The court may, however, order production of specific documents under Section 88 of the CPC on the application of a party who can identify the document, demonstrate that it is in the possession or control of the other party or a third party, and show its relevance to the issues. The court may also subpoena a third-party witness or document under Sections 106 to 108.

The List of Witnesses and Documents

Each party must file a list of witnesses and documents (buncheh phayan, บัญชีพยาน) at least seven days before the date of the first taking of evidence, identifying the witnesses to be called and the documents to be relied on, under Sections 88 and 90 of the CPC. Late submission requires leave of court and is permitted only on a showing that the evidence could not have been identified earlier despite reasonable diligence. Service of copies of documentary evidence on the opposing party at least seven days before the hearing is mandatory under Section 90.

Burden of Proof

The party that asserts a fact carries the burden of proving it, a principle codified in Section 84/1 of the CPC. The standard of proof in civil cases is the preponderance of evidence (nam nak haeng phayan lakthan, น้ำหนักแห่งพยานหลักฐาน), which the courts construe in line with the civil-law principle of intime conviction: the judge must be convinced on the balance of the evidence presented. Statutory presumptions in favour of one party shift the burden to the opposing party once the threshold conditions are satisfied.

Documentary Evidence

Documents are the workhorse of Thai litigation. Originals are preferred under Section 93 of the CPC; certified copies are admissible if the original is unavailable, with the court giving such weight as it considers appropriate. Foreign-language documents must be accompanied by a Thai translation, and the translator must attest in writing to the accuracy of the translation. Public documents executed abroad must generally be authenticated by Thai diplomatic or consular officers (consular legalization) before they can be relied on at trial. Thailand approved accession to the Hague Apostille Convention through Cabinet Resolution of 9 December 2025, but as of the date of this article the instrument of accession had not yet been deposited with the depositary in The Hague and the Convention is not yet in force for Thailand. Until accession is completed, traditional consular legalization through the Department of Consular Affairs of the Ministry of Foreign Affairs (กรมการกงสุล) at consular.mfa.go.th remains the safe route.

Witness Evidence

Witnesses give oral evidence under oath. Section 95 of the CPC restricts the admission of statements made out of court (hearsay) to prove the truth of their content, except where direct testimony is unavailable, the surrounding circumstances render the hearsay reliable, and admission is in the interests of justice. Witness statements may be exchanged in advance of trial with the court's permission to streamline examination-in-chief, after which the witness is subject to cross-examination and re-examination. The court may, on its own motion or at the request of a party, summon a witness, and a refusal to attend without lawful excuse is contempt under Sections 31 and 33 of the CPC. Live testimony by video conferencing is increasingly common, particularly in cases at the CIPITC and in matters where the witness is abroad, in line with the Court of Justice Regulation on Electronic Court Hearings B.E. 2563 (2020).

Expert Evidence

Expert opinion is governed by Sections 99 and 130 of the CPC. The court may appoint a neutral expert; the parties may also appoint their own experts whose reports are filed in evidence. Cross-examination of experts is permitted and is standard practice in technical disputes such as construction, medical malpractice, valuation of intellectual property, and financial damages. Where the experts disagree, the court may order a meeting of experts to narrow the points of difference and identify a common factual ground.

Privilege and Professional Secrecy

Thailand protects confidentiality of lawyer-client communications under Section 92 of the CPC, which entitles a lawyer to refuse to disclose confidential documents or information entrusted by a party in the lawyer's professional capacity. The protection extends to legal advice, opinions, and work product generated in connection with that advice. The Lawyers Act B.E. 2528 (1985) and the Code of Ethics of the Lawyers Council of Thailand (สภาทนายความ) reinforce this duty as a matter of professional discipline. The privilege is asserted by the lawyer, but the court may compel disclosure if the basis for refusal is unsatisfactory or if the communication was made in furtherance of fraud or crime. State secrets and information protected by intellectual property law are also covered by Section 92. There is no separate work-product or in-house counsel privilege as such, although in practice the court protects confidentiality where the in-house lawyer holds a license under the Lawyers Act.

Trial and Judgment

After pleadings are settled and the lists of evidence are exchanged, the court holds an evidence-taking hearing at which witnesses testify, documents are introduced, and the parties cross-examine. Closing submissions are typically filed in writing within 30 days from the close of evidence, although the court may shorten this period. Judgments must be delivered, in principle, within one year of filing the plaint at the first instance under the Timeframe Act of 2022, although complexity and the parties' conduct can extend the timetable.

The judgment must contain a statement of facts, the issues for decision, the findings on each issue, and the dispositive order under Section 141 of the CPC. Section 142 binds the court to grant relief on the issues pleaded, no more and no less; the court is forbidden from awarding what was not claimed, except for ancillary statutory consequences such as interest. Section 145 establishes the binding effect of a final judgment between the parties (res judicata, พิพากษาเด็ดขาด) and may be invoked as a defence in any subsequent proceeding raising the same cause of action between the same parties.

Damages and Remedies

Compensatory Damages

Damages aim to place the injured party in the position it would have occupied had the wrongful act or breach not occurred, limited to losses that are the natural and direct consequence of the breach or wrongful act and that were foreseeable, under Sections 222 and 223 of the CCC. The plaintiff bears the burden of proving the quantum of loss. Speculative or remote damages are excluded. Where exact quantification is impossible but loss is established, the court may estimate the amount at its discretion guided by the evidence presented, an approach derived from Supreme Court (Dika) jurisprudence on torts and contractual damages.

Statutory and Default Interest

Following the amendment to the CCC by the Emergency Decree Amending the Civil and Commercial Code B.E. 2564 (2021), effective 11 April 2021, the statutory interest rate under Section 7 of the CCC is 3% per annum on a monetary debt where no rate is fixed by agreement or by law. This rate is reviewed every three years by Royal Decree on the recommendation of the Ministry of Finance. Section 224 sets the default interest rate at 3% (the Section 7 rate) plus an add-on of 2%, totalling 5% per annum, unless the creditor is contractually or statutorily entitled to a higher rate. Section 224/1 provides that, for installment debts, default interest accrues only on the past-due principal amount of the missed installment, and any contrary agreement is void.

Punitive Damages

Punitive damages are not available in ordinary civil cases. The principal exceptions are consumer cases under Section 42 of the Consumer Case Procedure Act B.E. 2551 (2008), where the court may award up to five times the actual damages for wilful or grossly negligent supplier conduct, and class actions where additional incentive fees are available to representative parties.

Specific Performance and Injunctive Relief

Thai courts may order specific performance of a contract under Section 213 of the CCC where damages are an inadequate remedy and the obligation is amenable to compulsion, particularly in disputes over the transfer of immovable property, shares, and unique goods. Permanent injunctions are available in tort cases to restrain continuing wrongs, in intellectual property cases to prohibit infringement, and in unfair-competition cases. Declaratory judgments confirming or denying a legal right are available under Section 55 of the CPC on a showing that the dispute is ripe and concrete.

Costs and Lawyers' Fees

The losing party is generally ordered to bear the court fees and a small statutory share of the winner's lawyers' fees fixed in accordance with Annex 6 of the CPC, which prescribes a sliding scale based on the value of the claim. Thai courts in practice award only a token figure (typically THB 5,000 to THB 50,000 in the first instance) that bears little relation to actual legal expenditure. Witness expenses, translation and interpretation costs, and bailiffs' fees may be added under Sections 161 to 166.

Pure contingency fees calculated as a percentage of the recovery payable only on success have historically been considered contrary to public policy under settled Supreme Court doctrine. A 2020 Supreme Court (Dika) decision recognized as enforceable an arrangement where the lawyer's fee was set at 30% of the amount actually recovered, signalling a partial relaxation of the older rule, although the position remains nuanced. Hybrid arrangements that combine a reduced hourly or fixed fee with a calibrated success premium are widely accepted in commercial litigation, provided the agreement is fair, in writing, and signed before substantial work begins, and provided the lawyer's independence and primary loyalty to the client are preserved.

Litigation Funding

Thailand has no statutory regime governing third-party litigation funding. The Supreme Court has, in two decisions, considered third-party funding to be contrary to public policy where the funder has no pre-existing interest in the dispute and the arrangement amounts to commercial speculation on litigation outcomes. By contrast, where the funding party has a direct interest in the dispute (for example a parent company funding its subsidiary, an insurer funding a subrogated claim, or a co-investor funding a shareholder action), Thai courts have accepted that the funding is not against public policy because the funder is acting to protect its own interest. Disclosure of funding to the court is not required by statute, but may need to be disclosed where conflicts of interest are alleged. Third-party funding is increasingly seen in larger commercial cases where the funder has an economic nexus to the claim, and is permissible in arbitration with the same caveat. After-the-event insurance is uncommon. Self-funding through a hybrid fee arrangement and conditional success premiums is the most common structure for cost-sensitive plaintiffs.

Appeals

The losing party may file an appeal to the Court of Appeal (or to the Court of Appeal for Specialized Cases for matters from a specialized first-instance court) within one month from the date the judgment is read in court under Section 229 of the CPC. Appeals must be filed with the court of first instance, which transmits the file to the appellate court after fee payment. The notice of appeal must specify the grounds on which the appeal rests, both factual and legal, and must be supported by the prescribed court fee, which is calculated on the same percentage basis as the original claim and capped at THB 200,000.

An appeal does not automatically stay execution; the judgment debtor must apply for a stay under Section 231 and may be required to lodge security. Court of Appeal hearings are largely on the record, although the court may, in exceptional circumstances, order the production of additional evidence under Section 240. Following the 2015 amendment, a further appeal to the Supreme Court (Dika) requires permission within one month under Section 247 and is reserved for cases involving important legal questions, conflicts in jurisprudence, or wider public interest. The Supreme Court's Permission Committee screens petitions and grants permission only in a small minority of cases.

Enforcement of Domestic Judgments

A successful plaintiff who is not paid voluntarily must enforce the judgment through the Legal Execution Department (LED, กรมบังคับคดี) of the Ministry of Justice, with offices throughout the country. The plaintiff applies for a writ of execution within 10 years from the date the judgment becomes final under Section 274 of the CPC; this 10-year period is a strict bar, and applications submitted after expiry are dismissed without consideration of the merits. The LED then carries out attachment and sale of the debtor's movable and immovable assets, garnishment of bank accounts, salaries, and receivables, and registration of liens against immovable property. Practical recovery often depends on the quality of the asset investigation conducted before judgment, because Thailand has no public register of bank accounts and self-help recovery is not permitted. Effective enforcement of judgments and arbitral awards is a discipline that should be planned at the outset of every dispute, and our debt collection and repossession team works with the LED on attachment, garnishment, and sale procedures across Bangkok and the provinces.

Recognition and Enforcement of Foreign Judgments

Thailand is not a party to any bilateral or multilateral treaty for the reciprocal enforcement of foreign court judgments, has not acceded to the Hague 2019 Judgments Convention, and applies no statutory regime for direct registration of foreign judgments. As a matter of settled doctrine confirmed by Supreme Court (Dika) Decisions, including Dika Decision No. 585/2461 and the line of authority that followed, a foreign judgment is not directly enforceable in Thailand. The successful party must re-litigate the underlying claim before a Thai court, where the foreign judgment may be admitted only as documentary evidence of the facts found and the obligation owed. Three conditions are typically required for a foreign judgment to carry persuasive evidentiary weight: (i) it must be final and not subject to ordinary appeal in the rendering jurisdiction; (ii) it must have been issued by a court with personal and subject-matter jurisdiction by the standards of that jurisdiction; and (iii) it must not be contrary to the public order or good morals of Thailand. The re-litigation must be commenced within the applicable Thai prescription period, and the foreign currency component is converted into Thai baht at the date of the wrongful act or breach for tort and contract claims respectively under Section 196 of the CCC.

Enforcement of Foreign Arbitral Awards

The position is materially different for foreign arbitral awards. Thailand acceded to the New York Convention on the Recognition and Enforcement of Foreign Arbitral Awards on 21 December 1959, and the Convention entered into force for Thailand on 20 March 1960. Section 41 of the Arbitration Act B.E. 2545 (2002) provides for the direct enforcement of foreign awards rendered in any contracting state on petition to the competent Thai court. The application must be filed within three years from the date the award became enforceable, and must include the original or a certified copy of the award, the original or certified copy of the arbitration agreement, and certified Thai translations of any documents not in Thai.

Grounds for refusing recognition under Section 43 mirror those of Article V of the New York Convention: incapacity of a party, invalidity of the arbitration agreement, denial of due process, the award going beyond the scope of the submission, irregular composition of the tribunal, the award not yet binding or having been set aside, and grounds related to arbitrability or public policy. The competent court for enforcement is the Civil Court in Bangkok or the court where the assets are located. Thai courts apply a pro-enforcement interpretation in line with international practice. This explains the strong preference of international counterparties for arbitration clauses in Thai contracts, a topic developed at length in our arbitration in Thailand guide. The principal Thai institutions are the Thai Arbitration Institute (TAI, สถาบันอนุญาโตตุลาการ) under the Office of the Judiciary at tai.coj.go.th and the Thailand Arbitration Center (THAC, สถาบันอนุญาโตตุลาการทางเลือก) at thac.or.th; the TAI Rules were last amended in 2023 and the THAC Rules in 2019.

Specialized Procedures

Consumer Cases

The Consumer Case Procedure Act B.E. 2551 (2008) creates a fast-track regime for disputes between consumers and businesses. Consumers (and their statutory representatives, including the Office of the Consumer Protection Board, สำนักงานคณะกรรมการคุ้มครองผู้บริโภค or OCPB) are exempt from court fees, may file orally or by simplified written form, and benefit from reversed burdens of proof on technical issues such as defective products. The Act introduces a presumption that the supplier holds the relevant technical information and shifts the burden of disproving causation and defect onto the supplier. Punitive damages of up to five times the actual damages are available under Section 42 for wilful or grossly negligent supplier conduct. The court may also order the supplier to recall, replace, or fix the product. Businesses suing consumers, by contrast, follow ordinary CPC procedure and pay full court fees. Consumer-class proceedings are routed through the same regime, complementing the general class action chapter. Our consumer protection practice handles claims under the Act and complaints to the OCPB.

Intellectual Property and International Trade

The CIPITC has exclusive jurisdiction over patents, trademarks, copyright, plant varieties, trade secrets, semiconductor layout designs, geographical indications, international sale of goods, carriage by sea, letters of credit, anti-dumping, and disputes arising under the Trade Competition Act. Procedure is governed by the IP&IT Court Establishment Act B.E. 2539 and a set of specialized rules that allow live witness testimony by video conferencing, expedited preliminary injunctions including against online infringement, and the appointment of associate judges with technical expertise in engineering, science, and trade. Appeals lie to the Court of Appeal for Specialized Cases.

Tax Litigation

Disputes against the Revenue, Customs, or Excise Departments are filed at the Central Tax Court after exhausting the administrative appeal to the Board of Appeals under Section 30 of the Revenue Code. The plaintiff must file the action within 30 days of receiving the Board's decision under Section 8 of the Tax Court Establishment Act B.E. 2528 (1985). The Tax Court applies relaxed evidentiary rules and may, on its own motion, gather evidence beyond what the parties present.

Labour Disputes

The Central Labour Court and the regional labour courts apply the Labour Procedure Act B.E. 2522 (1979). Plaintiff employees are exempt from court fees, hearings are continuous and informal, and the court may, of its own motion, order remedies that go beyond the relief sought, including reinstatement, back pay, and severance damages. Conciliation is mandatory at the first hearing under Section 38, and the success rate is high. Appeals from the Labour Court go directly to the Court of Appeal for Specialized Cases under Section 54.

Bankruptcy and Business Rehabilitation

Insolvency proceedings under the Bankruptcy Act B.E. 2483 (1940) take place exclusively before the Central Bankruptcy Court. The minimum debt threshold for an involuntary bankruptcy petition is THB 1 million for individuals and THB 2 million for juristic persons. Business rehabilitation, modelled on Chapter 11 of the United States Bankruptcy Code, is available to debtors with debts of at least THB 10 million for ordinary corporations, with separate lower thresholds (THB 2 million and THB 3 million respectively) for natural persons and private limited companies under the SME rehabilitation regime introduced in 2016 and amended periodically since. The pre-packaged rehabilitation regime introduced under recent amendments allows pre-negotiated plans to be approved on an accelerated timetable, an important development for distressed businesses with cooperative creditors. The Legal Execution Department supervises the trustee and post-bankruptcy distributions.

Family and Inheritance

The Juvenile and Family Court hears divorce, custody, child support, paternity, adoption, and inheritance matters affecting minors, applying the Juvenile and Family Court and Juvenile and Family Procedure Act B.E. 2553 (2010) in addition to the substantive provisions of Books V and VI of the CCC. The Court routinely engages social workers and family mediators, and conciliation is mandatory in most matters. Foreign divorces are recognized only after a Thai court confirms compatibility with Thai public order and good morals.

Practical Considerations for Foreign Litigants

Language and Translation

Thai is the official language of all proceedings under Section 46 of the CPC. Every foreign-language document, including contracts, witness statements, corporate certificates, and powers of attorney, must be translated by a translator who attests to the accuracy of the translation. Critical exhibits are best translated by certified translators on the list maintained by the Ministry of Foreign Affairs Department of Consular Affairs. Witnesses who do not speak Thai testify through court-approved interpreters.

Powers of Attorney and Document Legalization

A party who is not physically resident in Thailand must act through a duly authorized representative under a power of attorney executed before a notary public and either legalized at the Thai embassy or consulate of the country of execution or, prospectively, apostilled once the Hague Apostille Convention enters into force for Thailand. The Cabinet approved accession on 9 December 2025, and the Convention is expected to enter into force in Thailand approximately six to eight months after the deposit of the instrument of accession. Until that point, the conservative practice is full consular legalization. The power of attorney must be in the prescribed Thai form (bai mob amnaj) and bear the appropriate stamp duty under the Revenue Code. Where the principal is a foreign juristic person, a corporate authority resolution and a certified copy of the corporate registration certificate (translated and legalized) are also required.

Asset Tracing and Pre-Suit Investigation

Asset tracing should begin before the lawsuit is filed. By the time judgment is rendered, defendants have often had years to dissipate assets, and Thai law offers limited interim remedies, principally the prejudgment attachment under Sections 254 to 270 of the CPC, which requires the plaintiff to demonstrate prima facie merits and a real risk of asset dissipation. Public registers, including land titles at the Land Department, corporate filings at the Department of Business Development (dbd.go.th), and vehicle records at the Department of Land Transport, are accessible for asset checks; bank account information is not public and can only be obtained through court-ordered disclosure or post-judgment LED procedures.

Cultural and Strategic Considerations

Thai courts place a high premium on respect for procedure and decorum. Counsel are expected to address the bench in formal Thai, and oral submissions are generally brief and supplemented by written closing briefs. Settlement is strongly encouraged at every stage, and parties who refuse a reasonable settlement may face adverse cost consequences in the discretion of the court. Where the dispute involves a Thai counterparty with a long-term commercial relationship, the structured mediation process can preserve commercial relationships in a way that adversarial litigation cannot.

How Juslaws & Consult Approaches Civil Litigation

Juslaws & Consult represents Thai and international clients in commercial, civil, family, and specialized court disputes throughout Thailand. Our litigation practice covers the full spectrum from contract disputes, shareholder and joint-venture litigation, real estate and land disputes, debt recovery, and personal injury claims through to intellectual property infringement, consumer protection, and tax litigation. We work closely with our arbitration and ADR team to design dispute resolution strategies that protect commercial relationships and limit cost exposure, and with our corporate practice to ensure that risk is allocated correctly in the agreements that produce the disputes in the first place. For criminal matters arising in parallel with civil disputes, see our criminal litigation page; for insolvency-related disputes, our bankruptcy team handles petitions, oppositions, and rehabilitation plans before the Central Bankruptcy Court.

Frequently Asked Questions

This article is provided for general information only and does not constitute legal advice. For advice on a specific dispute or to discuss representation, please contact Juslaws & Consult.