GeStamp Duty is a system designed to manage stamp duty payment requests for electronic instruments (Or.Sor.9) or instruments under the stamp duty that are created as electronic data in accordance with the Electronic Transactions Act (e-Stamp Duty).
What is the term 'electronic instrument'? #
An instrument under the stamp duty rate schedule that is created as electronic data in accordance with the Electronic Transactions Act.
What is Electronic Instrument Reference Number? #
A sequence of numbers, letters, or characters generated by the instrument issuer’s system to reference or identify each electronic instrument. Each electronic instrument must have a unique electronic instrument reference number.
Stamp Duty Payment Certification Code #
A code issued by the Revenue Department to the taxpayer upon receipt of stamp duty payment, used for verifying key information related to the electronic instrument.

Submission Deadline for Stamp Duty Payment Request #
A person liable for stamp duty must submit a stamp duty payment request via the internet and make the payment either before executing the instrument or within 15 days from the day following the date the instrument is executed, without excluding official holidays. If the last day for submission falls on an official holiday, the submission may be made on the next working day following the holiday. (An official holiday refers to any day government offices are closed, including weekends, public holidays, and special holidays officially announced by the government.) The electronic stamp duty system supports payment of stamp duty up to 30 days in advance before the execution date of the instrument.
When is an electronic instrument considered fully stamped? #
Once the Revenue Department has issued the receipt and the Stamp Duty Certification Code, the taxpayer is required to reference or attach the certification code to the electronic instrument.
Channels for Receiving the Stamp Duty Certification Code and Receipt #
For stamp duty payment requests made via Application Programming Interface (API), the certification code and official receipt must be retrieved through the API channel. For users of the GeStamp Duty system, these documents can be downloaded directly from the system.
Is the receipt issued in the name of the person liable for stamp duty as specified in the stamp duty? #
The person submitting a monetary stamp duty payment request for an electronic instrument must be a contracting party to the instrument (agreement). The receipt will be issued in the name of the party specified in the instrument data submitted to the system. For example, in a contract for work under the stamp duty schedule, the duty is to be paid by the contractor. However, if the employer (hirer) purchases the stamp duty and is listed as the buyer in the submission, the receipt will be issued in the employer's name.
The submission of stamp duty payment requests for electronic instruments via the internet through the API provided by the Revenue Department currently supports 27 types of instruments, including:
- Instrument 1: Lease of land, buildings, other structures, or rafts
- Instrument 2: Transfer of share certificates, debentures, bonds, or debt certificates issued by companies, associations, partnerships, or any organizations
- Instrument 3: Hire-purchase of property
- Instrument 4: Contract for work or manufacturing (work-for-hire agreement)
- Instrument 5: Loan agreement or overdraft arrangement with a bank
- Instrument 6: Insurance policy
- Instrument 7: Power of attorney
- Instrument 8: Proxy for voting in company meetings
- (91) Instrument 9(1): Bill of Exchange
- (92) Instrument 9(2): Promissory Note
- (10) Instrument 10: Bill of Lading
- (111) Instrument 11(1): Share Certificate, Debenture, or Debt Certificate issued by any company, association, partnership, or organization
- (112) Instrument 11(2): Government Bond sold in Thailand
- (12) Instrument 12: Cheque or any written order used in place of a cheque
- (13) Instrument 13: Deposit Certificate
- (14) Instrument 14: Letter of Credit
- (15) Instrument 15: Traveler’s Cheque
- (16) Instrument 16: Delivery Order
- (17) Instrument 17: Guarantee Agreement
- (18) Instrument 18: Pledge Agreement
- (19) Instrument 19: Warehouse Receipt
- (20) Instrument 20: Order for Delivery of Goods
- (21) Instrument 21: Agency Agreement
- (23) Instrument 23: Counterpart or Duplicate of an Instrument
- (271) Instrument 27(a): Partnership Establishment Agreement
- (272) Instrument 27(b): Amendment to Partnership Agreement
- (283) Instrument 28(c): Acknowledgement of Sale, Hire Purchase, or Transfer of Vehicle Ownership (for registered vehicles only)