Section 306: Assignment of claim, written form
Statutory text (Thai original)
การโอนหนี้อันจะพึงต้องชำระแก่เจ้าหนี้คนหนึ่งโดยเฉพาะเจาะจงนั้นถ้าไม่ทำเป็นหนังสือ ท่านว่าไม่สมบูรณ์ อนึ่งการโอนหนี้นั้นท่านว่าจะยกขึ้นเป็นข้อต่อสู้ลูกหนี้หรือบุคคลภายนอกได้แต่เมื่อได้บอกกล่าวการโอนไปยังลูกหนี้หรือลูกหนี้จะได้ยินยอมด้วยในการโอนนั้น คำบอกกล่าวหรือความยินยอมเช่นว่านี้ท่านว่าต้องทำเป็นหนังสือ ถ้าลูกหนี้ทำให้พอแก่ใจผู้โอนด้วยการใช้เงิน หรือด้วยประการอื่นเสียแต่ก่อนได้รับบอกกล่าว หรือก่อนได้ตกลงให้โอนไซร้ ลูกหนี้นั้นก็เป็นอันหลุดพ้นจากหนี้
Verbatim from the Royal Gazette / Office of the Council of State
English translation
The transfer of an obligation performable to a specific creditor is not valid unless it is made in writing. It can be set up against the debtor or third person only if a notice thereof has been given to the debtor, or if the debtor has consented to the transfer. Such notice or consent be in writing. The debtor is discharged if he satisfies the transferor by way of payment or otherwise before he has received notice of, or has agreed to, the transfer.
This English translation is provided for reference only and has not yet been firm-verified. Always rely on the Thai original.
Firm annotation
Section 306 is part of Book 2 (Obligations) of the Thai Civil and Commercial Code. This entry is awaiting firm-authored commentary; the statutory text above is verbatim from the Office of the Council of State (OCS Krisdika) Thai source, with the English translation from the FAO/UN FAOLEX repository. Always rely on the Thai original for legal proceedings.
Why this matters in practice
Lawyers: Both the assignment itself and any notice to the debtor must be in writing; oral assignment or oral notice is ineffective. Once proper notice is given, the debtor must pay the assignee and loses the right to pay the assignor. The debtor retains all defences existing before notice. Laypersons: If someone tells you that your debt has been transferred to a new company, insist on written proof of both the assignment and the notice: until you receive that, you are safe to pay the original creditor.
Legislative history
Part of the original Civil and Commercial Code codification; no major subsequent amendment.
Supreme Court decisions interpreting this section
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Supreme Court Judgment No. 3033/2550 (2007)
A notice of assignment under section 306 must sufficiently identify the specific debt transferred; a general blanket description covering a pool of debts does not satisfy the requirement.
The plaintiff claimed as assignee of a loan receivable from bank D. The written notice of assignment (exhibit J7) described the transferred debts only in general terms referencing a bundle of credit and security agreements without identifying the specific debt in question. The Court held the notice was insufficiently specific to satisfy section 306 and the assignment could not be enforced against the defendant.
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Supreme Court Judgment No. 4872/2550 (2007)
Once written assignment and written notice to the debtor are completed under section 306(1), the assignor loses all right to receive payment; any execution by the assignor's other creditors against that receivable must fail.
The defendant assigned its right to receive money under a court-approved settlement to company T, which then sent written notice of the assignment to the obligor. The Court confirmed the assignment was perfected under section 306(1): from that point the defendant (assignor) had no right to receive payment and the plaintiff (who sought to intercept the money by execution) had no basis to do so.
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Supreme Court Judgment No. 1840/2547 (2004)
A conditional notice of future-debt assignment is effective only when the specified condition (notation on each invoice) is fulfilled for each individual debt.
Company P notified the defendant of an assignment of trade receivables, including future debts, but conditioned notice on the assignor noting the transfer on each invoice. The Court held this was not a blanket notice of all future receivables but a case-by-case notice: each assignment would only be effective against the debtor once the specific invoice bearing the transfer notation was issued and delivered.
Curated decisions with case numbers verified against the Supreme Court database. English renderings are the firm's editorial translation for study.
Cited in 121 Supreme Court decisions (1955 to 2025)
Selected citing decisions
- Decision 1174/2568 (2025)
- Decision 6557/2567 (2024)
- Decision 2260/2562 (2019)
- Decision 5560-5563/2562 (2019)
- Decision 3884/2560 (2017)
- Decision 12977/2558 (2015)
- Decision 12379/2558 (2015)
- Decision 2462/2558 (2015)
This list is selected automatically, weighted towards judgments that turn on this section rather than ones that merely recite it when passing sentence. It has not yet been reviewed by the firm.
Most often cited alongside
- Section 303 20
- Thai CPC s. 223 bis 12
- Section 308 11
- Section 349 9
- Section 305 8
- Thai CPC s. 247 7
Sections that appear in the same judgments as this one most often. The figure is the number of decisions.
Counted across the firm's corpus of 83,652 Supreme Court decisions, 1921 to 2026. The count is complete; the stated year range trims rare outliers so it describes where the citations actually sit. These figures are computed by us and are not official court statistics. How we count these, and what we measured
Cite this section
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Plain citation
Civil and Commercial Code, s. 306 (Thailand) -
Academic citation
Civil and Commercial Code (Thailand), s. 306. ThaiLawOnline, https://www.thailawonline.com/thai-civil-code/section-306/ (accessed 28 August 2026). -
Thai citation
ป.พ.พ. มาตรา 306 -
Permalink
https://www.thailawonline.com/thai-civil-code/section-306/ -
Embed on your site
<blockquote cite="https://www.thailawonline.com/thai-civil-code/section-306/"><p>The transfer of an obligation performable to a specific creditor is not valid unless it is made in writing. It can be set up against the debtor or third person only if a notice thereof has been given to the debtor, or if the debtor…</p><footer>Civil and Commercial Code, s. 306 (Thailand): <a href="https://www.thailawonline.com/thai-civil-code/section-306/">ThaiLawOnline</a></footer></blockquote>
The Thai text is authoritative. The English is an unofficial translation by ThaiLawOnline, free to reuse with attribution.