ttb e-Guarantee (e-L/G) | TMBThanachart (ttb)

ttb e-guarantee (e-L/G)

Electronic letter of guarantee (e-L/G) is the service that the bank guarantees customers to undertake the performance of contracts or obligations that the customer has, to the beneficiary. The sending channel of the information of the letter of guarantee among the customer, the bank, and the beneficiary will be via electronics channel.

With ttb business one, the ultimate digital banking platform for businesses, you can manage every step effortlessly—from issuing letters of guarantee to requesting amendments, extensions, or adjusting guarantee limits. Everything is at your fingertips.

Stay in control with real-time access to your guarantee limits, view all active guarantees, and check detailed information instantly. This all-in-one solution is designed to streamline your operations, reduce complexity, and elevate your business efficiency—perfect for today’s fast-paced world.

Covers a wide range of guarantee types for both government and private sector organizations, including:

Government under Comptroller General’s Department - The bank provides the service for the procurement process with government via e-GP system e.g. e-Bidding, e-Performance. Type of letter of guarantee are bid bond, performance bond, advance payment bond, and retention bond.

State of Enterprise and Corporate Companies - Type of letter of guarantee are bid bond, performance bond, advance payment bond, retention bond, purchase/merchandize bond and utility bond.

Thai Customs - Type of letter of guarantee is Customs/Tax bond.

Benefits Customers Gain from Issuing an Electronic Letter of Guarantee (e-LG)

Fast and seamless issuance : Issue your Electronic Letter of Guarantee (e-LG) instantly through a secure Blockchain system that connects beneficiaries and the bank. Never miss critical business opportunities, such as project bidding.
Simplified process with enhanced security : Minimize paperwork and eliminate the risk of lost documents, backed by advanced protection against forgery for complete peace of mind.
Unlimited Connectivity : Reach a wide network of beneficiaries—both government and private sectors—who accept e-LG, enabling your business to operate without boundaries.

Benefits Customers Gain Signing Up for ttb business one

Quick & Hassle-Free : Request your Letter of Guarantee via ttb business one—no branch visits, no delays. Send e-LG details directly to beneficiaries instantly.
Real-Time Status Tracking : Stay in control with real-time status updates for every guarantee through ttb business one, wherever you are

Process for Applying for an Electronic Letter of Guarantee (e-LG)

Have an approved Letter of Guarantee credit limit as a credit customer
Sign up for the ttb e-Guarantee service by contacting ttb Relationship Manager.

Available Channels for Electronic Letter of Guarantee (e-LG)

Request letter of guarantee via ttb business one internet banking
Request letter of guarantee at ttb branch (Click to view branches that provide letter of guarantee services)
Request letter of guarantee at ttb international trade service center

Document Required

For Juristic Persons

Company Certificate issued by the Ministry of Commerce/ Office of the Company Limited and Partnership Registration, and objectives of Juristic person
Company share holder report
Juristic person’s regulations / Partnership agreement letter
Financial report statement and financial auditor’s report
Internal financial statement or value added tax return form (Por. Por. 30)
Commercial documents such as A/R, A/P, Inventory report, Bill purchase
Licenses required to operate the business according to the type of industry

List of Beneficiary Companies

Click to view the list of beneficiary companies (Data as of July 2025)

FAQs

How is an Electronic Letter of Guarantee (e-LG) different from a paper-based Letter of Guarantee?

Topic	Paper-Based Letter of Guarantee	Electronic Letter of Guarantee (e-LG)
Document Format	Must deliver the original LG document to the beneficiary.	e-LG information is stored online and can be sent directly to the beneficiary instantly.
Security	Risk of forgery and document loss.	Uses encryption and blockchain technology for high security.
Speed	Takes approximately 1–2 days.	Takes 1–4 hours.
Convenience	Costs associated with the delivery and processing of original LG documents.	Reduces costs and time spent on transportation.
Verification	Requires physical document verification by the bank.	Status can be checked anytime online.

Which types of businesses are suitable for using Electronic Letters of Guarantee (e-LG)?

Applicable to all types of businesses where beneficiaries can accept Electronic Letters of Guarantee (e-LG)

Why should businesses use Electronic Letters of Guarantee (e-LG) instead of Paper-Based Letters of Guarantee?

Cost-Efficient, and Secure—Protect against forgery and document loss

If a paper-based Letter of Guarantee has been previously requested, can the electronic Letter of Guarantee service be used immediately?

Yes, but you must complete registration for ttb e-guarantee beforehand.

What channels are available for businesses to request the issuance of an Electronic Letter of Guarantee?

You can request issuance, renewal, increase of liability, or amendment of Letter of Guarantee details through ttb business one—the digital banking platform for businesses.

Download Documents

Announcement - Defrauded Letter of Guarantee (Thai Version)

User Guide for Requesting Electronic Letter of Guarantee via ttb business one

Learn how to use Electronic Letters of Guarantee (e-LG) request service via ttb business one internet banking—from viewing Letters of Guarantee guarantee records, requesting a new Letters of Guarantee, requesting amendments to an existing guarantee, renewing Letters of Guarantee, modifying the guarantee document, to cancelling a Letters of Guarantee request.

Click to view the user guide for requesting a Letters of Guarantee via ttb business one internet banking.
(Select the 'Loans' category and then choose the ‘Letter of Guarantee' sub-menu.)