Joint and Several Liability vs Several Liability — Key Legal Differences ✓

✓ Legal content last reviewed 29 September 2026 · synced with the audited Thai edition

Thundthornthep Yamoutai, Ph.D. | LAS Legal | 3 April 2026 | ภาษาไทย

When multiple debtors owe the same debt, who exactly can the creditor demand payment from? The answer depends on whether the obligation is "joint and several" or "several only" — a distinction with enormous practical consequences for creditors protecting their claims and for debtors understanding the scope of their exposure. SME operators who co-invest, co-borrow from banks, or co-contract must understand this principle thoroughly.

What Are Joint and Several Liability vs Several Liability?

Thai law divides the liability of multiple debtors into two main categories, which have completely different legal effects:

Joint and Several Liability (Solidary Obligation) is the situation where multiple debtors are liable for the same debt, and the creditor has the right to demand full payment from any one debtor or from all debtors simultaneously, under the Thai Civil and Commercial Code (TCCC), Section 291.

Several Liability is the situation where each debtor is liable only for their own share. The creditor cannot demand more than each debtor's individual portion. For a divisible obligation, Thai law presumes in case of doubt that each debtor is liable only for an equal share (several (individual) liability, Section 290); but persons who bind themselves together in one contract are presumed, in case of doubt, to be liable as joint debtors even if the performance is divisible (Section 297), and debtors of an indivisible obligation are liable as joint debtors (Section 301).

TCCC Sections 290–302 — Overview of the Joint Debtor Chapter

The Thai Civil and Commercial Code, Book 2, Title 1, Chapter 3, Sections 290–302, provides a comprehensive framework for obligations with multiple debtors, divided into external rules (debtor–creditor relationship) and internal rules (relationship among joint debtors).

Joint and Several Liability (Sec. 291) — Mechanism & Effects

      มาตรา ๒๙๐  ถ้าการชำระหนี้เป็นการอันจะแบ่งกันชำระได้ และมีบุคคลหลายคนเป็นลูกหนี้ก็ดี มีบุคคลหลายคนเป็นเจ้าหนี้ก็ดี เมื่อกรณีเป็นที่สงสัย ท่านว่าลูกหนี้แต่ละคนจะต้องรับผิดเพียงเป็นส่วนเท่า ๆ กัน และเจ้าหนี้แต่ละคนก็ชอบที่จะได้รับแต่เพียงเป็นส่วนเท่า ๆ กัน

      มาตรา ๒๙๑  ถ้าบุคคลหลายคนจะต้องทำการชำระหนี้โดยทำนองซึ่งแต่ละคนจำต้องชำระหนี้สิ้นเชิงไซร้ แม้ถึงว่าเจ้าหนี้ชอบที่จะได้รับชำระหนี้สิ้นเชิงได้แต่เพียงครั้งเดียว (กล่าวคือลูกหนี้ร่วมกัน) ก็ดี เจ้าหนี้จะเรียกชำระหนี้จากลูกหนี้แต่คนใดคนหนึ่งสิ้นเชิงหรือแต่โดยส่วนก็ได้ตามแต่จะเลือก แต่ลูกหนี้ทั้งปวงก็ยังคงต้องผูกพันอยู่ทั่วทุกคนจนกว่าหนี้นั้นจะได้ชำระเสร็จสิ้นเชิง

      มาตรา ๒๙๕  ข้อความจริงอื่นใด นอกจากที่ระบุไว้ในมาตรา ๒๙๒ ถึงมาตรา ๒๙๔ นั้น เมื่อเป็นเรื่องเท้าถึงตัวลูกหนี้ร่วมกันคนใดก็ย่อมเป็นไปเพื่อคุณและโทษแต่เฉพาะแก่ลูกหนี้คนนั้น เว้นแต่จะปรากฏว่าขัดกับสภาพแห่งหนี้นั้นเอง

      ความที่ว่ามานี้ เมื่อจะกล่าวโดยเฉพาะก็คือว่าให้ใช้แก่การให้คำบอกกล่าว การผิดนัด การที่หยิบยกอ้างความผิด การชำระหนี้อันเป็นพ้นวิสัยแก่ฝ่ายลูกหนี้ร่วมกันคนหนึ่ง กำหนดอายุความหรือการที่อายุความสะดุดหยุดลง และการที่สิทธิเรียกร้องเกลื่อนกลืนกันไปกับหนี้สิน

      มาตรา ๒๙๖  ในระหวางลูกหนี้ร่วมกันทั้งหลายนั้น ท่านว่าต่างคนต่างต้องรับผิดเป็นส่วนเท่า ๆ กัน เว้นแต่จะได้กำหนดไว้เป็นอย่างอื่น ถ้าส่วนที่ลูกหนี้ร่วมกันคนใดคนหนึ่งจะพึงชำระนั้น เป็นอันจะเรียกเอาจากคนนั้นไม่ได้ไซร้ ยังขาดจำนวนอยู่เท่าไรลูกหนี้คนอื่น ๆ ซึ่งจำต้องออกส่วนด้วยนั้นก็ต้องรับใช้ แต่ถ้าลูกหนี้ร่วมกันคนใดเจ้าหนี้ได้ปลดให้หลุดพ้นจากหนี้อันร่วมกันนั้นแล้ว ส่วนที่ลูกหนี้คนนั้นจะพึงต้องชำระหนี้ก็ตกเป็นพับแก่เจ้าหนี้ไป

The boxes above are ประมวลกฎหมายแพ่งและพาณิชย์ มาตรา ๒๙๐ ๒๙๑ ๒๙๕ และ ๒๙๖ from the official PDF. The English sentence is a lecture, not the statute.

The mechanism operates on two levels:

External Relationship — Between Debtors and the Creditor

• The creditor may demand full or partial payment from any joint debtor of their choice
• All joint debtors remain bound until the debt is fully discharged (TCCC Sec. 291, final clause)
• When one debtor pays in full, the obligation is extinguished for all (TCCC Sec. 292, para. 1)
• When one joint debtor sets off, the set-off benefits the other joint debtors as well; but the other debtors cannot use a claim that belongs to one joint debtor to set off against the creditor (TCCC Sec. 292)

Internal Relationship — Among Joint Debtors

• Each joint debtor's share is equal unless otherwise agreed (TCCC Sec. 296)
• A debtor who pays more than their share has a contribution right against the others
• If one joint debtor is insolvent, their shortfall is distributed among the remaining debtors pro rata (TCCC Sec. 296)

Several Liability — Mechanism & Effects

Several liability means each debtor is responsible only for their own share. Several (individual) liability is provided for directly in TCCC Section 290: where the performance is divisible and there are several debtors, in case of doubt each debtor is liable only for an equal share.

Key characteristics of several liability:

• The creditor may only demand each debtor's individual portion — demanding more is impermissible
• If one debtor becomes insolvent, the creditor bears that loss — they cannot pursue the other debtors for it
• There is no contribution right between several debtors, since each is independently liable for their own share only
• Appropriate where debtors receive different benefits or have different levels of involvement

Comparison: Joint / Several / Joint and Several

In practice, business lawyers distinguish the joint debt (หนี้ร่วม, TCCC Section 291), the several (individual) debt (หนี้ส่วนตัว, Section 290) and the indivisible obligation, whose debtors are liable as joint debtors (Section 301). Thai law has no separate "joint only" category under which the creditor must sue all debtors together.

Contribution Rights Among Joint Debtors (Sec. 296)

When one joint debtor pays the full amount on behalf of others, the law provides a contribution right (right of recourse) to ensure fairness. TCCC Section 296 provides that, among joint debtors, each bears an equal share unless otherwise agreed, and that if one debtor's share cannot be recovered from him, the other debtors who must contribute bear the shortfall (see the statutory text in the box above). Section 296 does not itself contain a right of subrogation.

How to Calculate Contribution

Effect of Personal Events — Section 295

Under TCCC Section 295, events affecting one joint debtor personally do not affect the other joint debtors, unless the law provides otherwise. This is known as the "principle of independence" (หลักเอกเทศ).

Real Business Scenarios — 4 Cases

1. General Partnership (ห้างหุ้นส่วนสามัญ)

Under TCCC Section 1025, partners in a general partnership are jointly and unlimitedly liable for all debts of the partnership. A creditor may demand full payment from any one partner, regardless of that partner's actual ownership share in the partnership.

2. Directors Providing Personal Guarantees

Three directors co-guarantee a THB 5,000,000 corporate credit facility without specifying individual shares. If the guarantee is structured as joint and several liability, the bank may demand THB 5,000,000 from any one director. The paying director then has a contribution right against the others under TCCC Section 296.

3. Joint Venture Construction Contract

Company A and Company B jointly undertake a construction project. If the contract makes A and B jointly and severally liable, the employer may claim full damages from either A or B without having to sue both simultaneously — considerably simplifying enforcement.

4. M&A — Representations and Warranties (R&W)

In share or asset purchase agreements (SPA/APA), multiple sellers are typically made jointly and severally liable for representations and warranties. This allows the buyer to recover full indemnification from whichever seller has sufficient assets, without chasing every seller at once.

Joint Tortfeasors — TCCC Section 432

TCCC Section 432 provides: "If several persons have committed a tortious act jointly, they are all jointly liable to make compensation for the damage thereby caused. This provision applies also where it is impossible to determine which of several persons has caused the damage."

Three key principles of Section 432:

• Concerted Action: All joint tortfeasors are jointly and severally liable as joint debtors, even if each contributed to the damage to different degrees. The victim may claim the full amount from any one of them.
• Unknown Causation: Even where it is impossible to identify which person caused the specific harm, if multiple persons were involved, the law presumes all are jointly liable — critical in environmental, product liability, and construction cases.
• Contribution: The tortfeasor who pays is entitled to seek contribution from the others under TCCC Section 432 (last paragraph): as among those liable together, each bears an equal share unless the court decides otherwise in view of the circumstances.

Comparison: Joint Tortfeasors (Sec. 432) vs Contractual Joint Debtors (Sec. 291)

Subrogation Rights When a Joint Debtor Pays

When a joint debtor pays the full debt on behalf of others, the law grants a right of subrogation to the paying debtor under TCCC Section 229(3) read with Section 226 (not Section 296): a person who is bound together with others to pay a debt, and has an interest in paying it, steps into the creditor's rights and security and may exercise them in his own name.

Subrogation operates in two stages:

Stage 1 — Payment on Behalf

• The paying joint debtor (the "recourse claimant") must actually pay the creditor in full or in excess of their own share
• Payment must actually occur — a mere promise to pay does not suffice
• From the date of payment, the subrogation right arises immediately

Stage 2 — Subrogation and Contribution

• The paying debtor automatically steps into the creditor's shoes, acquiring all of the creditor's rights including all security interests
• They may enforce mortgages, pledges, and other security the original creditor held against the other joint debtors
• Contribution is calculated pro rata; if no agreement, shares are equal (Sec. 296)

Subrogation and Contribution — Calculation Examples

LAS Risk Assessment

Drafting Tips — Defining Liability Correctly (Practical Guide)

Three levels must be addressed when drafting a contract with multiple debtors: defining the type of liability, specifying internal proportions, and establishing the contribution mechanism.

Common Drafting Mistakes

• Using "jointly" without "severally": "Jointly" alone may be interpreted as requiring all debtors to be sued together. Adding "severally" (or "and severally") is essential to allow the creditor to sue any one debtor for the full amount.
• Not specifying internal proportions: Even though the creditor may demand the full amount from any debtor, the internal allocation defaults to equal shares if not specified — which may not reflect the parties' actual intentions when their contributions differ.
• No pre-contribution notice requirement: The agreement should require notice before seeking contribution, giving the other party an opportunity to voluntarily pay their share first.
• No R&W Cap in M&A contracts: Sellers should always negotiate a maximum liability cap for representations and warranties; otherwise their exposure is unlimited.
• Wrong liability terminology: Some contracts state "each party is independently responsible" intending joint and several liability but the language actually means several only. Always use the statutory formulation.

LAS Risk Methodology — Assessing Joint Liability Risk Before Signing

LAS applies the Eliminate → Distribute → Mitigate framework to joint liability risk analysis:

The Statutory Rule and 3 Landmark Supreme Court Judgments on Joint and Several Liability

The first box sets out the statutory rule in Section 291, on which the whole topic of joint debtors rests. The three Supreme Court judgments that follow establish key legal principles on joint and several liability that business lawyers and SMEs should know; all are drawn from actual cases decided by Thailand's Supreme Court.

      มาตรา ๖๘๒  ท่านว่าบุคคลจะยอมเข้าเป็นผู้รับเรือน คือเป็นประกันของผู้ค้ำประกันอีกชั้นหนึ่ง ก็เป็นได้

      ถ้าบุคคลหลายคนยอมตนเข้าเป็นผู้ค้ำประกันในหนี้รายเดียวกันไซร้ ท่านว่าผู้ค้ำประกันเหล่านั้นมีความรับผิดอย่างลูกหนี้ร่วมกัน แม้ถึงว่าจะมิได้เข้ารับค้ำประกันรวมกัน

SME Case Studies — Joint Liability in Real Life

Case 1: Three SME Partners Take a Joint Loan — One Goes Bankrupt

Mr. K, Mr. L, and Mr. M jointly borrow THB 6,000,000 as joint debtors under Section 291. Mr. K subsequently goes bankrupt. Outstanding balance: THB 4,200,000.

Case 2: Partnership — Liability of Partners in a Joint Debt

Registered general partnership "ABC Trading" (3 partners) borrows THB 5,000,000. It is unable to repay.

Case 3: Several Guarantors and a Clause Making Them Liable as Joint Debtors with the Principal Debtor

Company XYZ borrows THB 10,000,000, and Mr. P and Mr. Q, both natural persons, guarantee the loan. Two layers must be kept apart. TCCC Section 682, paragraph 2, makes several guarantors of the same debt liable as joint debtors among themselves. Section 681/1, paragraph 1, makes void any agreement that a guarantor is liable in the same way as, or in the capacity of, a joint debtor; under paragraph 2 that rule does not apply to a juristic-person guarantor that consents to be bound as a joint debtor.

10-Point Checklist — Before Signing a Joint Liability Agreement (SME Edition)

FAQ — 10 Common Questions About Joint and Several Liability

Summary

Joint and several liability gives creditors maximum protection: the right to demand full payment from any one debtor without first proving that the others are unable to pay. Several liability, by contrast, limits each debtor to their own share. Understanding this distinction is fundamental to structuring any multi-party transaction.

For SMEs who co-invest or co-borrow, understanding that they are "joint and several debtors" allows proper financial planning and avoids shock when a creditor demands payment of the entire debt. Before signing any contract with multiple debtors, always consult a lawyer to assess the scope of liability and put in place a fair contribution mechanism.