The Bank of Thailand will issue two commemorative THB100 polymer banknotes from 21 December 2026. Each design has an issue volume of 10 million notes and can be exchanged at face value. The notes commemorate Her Majesty Queen Sirikit The Queen Mother and Her Royal Highness Princess Bajrakitiyabha Narendiradebyavati Kromluangrajasarinisiribajra Mahavajrarajdhita.
The public can obtain the notes through commercial banks, the Government Savings Bank, the Bank for Agriculture and Agricultural Cooperatives, the Government Housing Bank and the Islamic Bank of Thailand. The announcement does not describe a premium price for the notes themselves. A separate souvenir folder costs THB10 per set.
Quick Guide
| Availability | From 21 December 2026 |
|---|---|
| Denomination | THB100 for each design |
| Issue volume | 10 million notes per design |
| Exchange channels | Commercial banks and named state banks |
| Souvenir folder | THB10 per set, with two million produced |
What Is Being Issued
There are two designs, both in the THB100 denomination. The front is identical to the current Series 17 THB100 polymer banknote in circulation. The reverse sides feature images connected with royal duties and initiatives for the well-being of Thai people and the nation. Each design also has special fluorescent elements that appear under ultraviolet light.
Because the front resembles the circulating polymer note, collectors and casual holders should compare the reverse design and packaging rather than relying on colour alone. Handle the notes carefully but remember that their face value remains THB100. The announcement presents them as commemorative currency and keepsakes, not as an investment product or guaranteed appreciating collectible.
Where to Exchange
The Bank of Thailand names any commercial bank, the Government Savings Bank, the Bank for Agriculture and Agricultural Cooperatives, the Government Housing Bank and the Islamic Bank of Thailand. Availability can vary by branch because each institution distributes its allocation through its own network. A small local branch may receive fewer notes than a large city branch.
Contact the chosen branch shortly before 21 December and ask about opening time, per-person limits, identification and whether both designs are available together. Do not send money to an unknown online seller before official exchange begins. If a bank offers an appointment or queue system, use the bank’s own channel rather than a link forwarded by a stranger.
Face Value and Folders
Each note exchanges at face value, so one example costs THB100. The optional souvenir folder is priced at THB10 per set. The Bank of Thailand has produced two million folders, and proceeds will be presented to His Majesty the King for royal charities at the Royal Discretion.
Ask whether the folder is sold separately or packaged with the notes at the selected branch. Limited folder production means it may run out before the banknotes do. A folder can protect a keepsake, but it does not change the legal denomination or create an official resale value. Avoid paying a large markup purely because a third party adds unofficial packaging.
Security and Care
The polymer substrate and familiar Series 17 front should be handled like current THB100 notes. The special ultraviolet patterns add a commemorative security feature, but members of the public should not rely on a single feature when checking authenticity. Banks remain the safest source for an original issue.
Store a keepsake flat, dry and away from excessive heat or direct sunlight. Do not laminate the note, punch holes or attach adhesive. If it will be handled regularly, use an inert protective sleeve designed for banknotes. Avoid chemical cleaners, which can damage printing or the polymer surface.
Scams and Resale Claims
New commemorative issues attract unofficial pre-orders and speculative prices. A seller may charge for convenience, but that does not turn the note into an investment. Compare any premium with the clear face-value exchange route. Never disclose online-banking credentials, card details or one-time passwords to someone claiming to reserve a bank allocation.
For disputes or uncertainty, contact the named bank through its verified website or published telephone number. The Bank of Thailand press release includes its Banknote and Payment Management Department contact. This guide provides general information only and does not predict future collector value or recommend buying from the secondary market.
Make It Work
The simplest route is to exchange the notes at face value through a named bank from 21 December 2026. Call the branch first, carry the required identification and treat unofficial markups cautiously.
Collectors who want both designs and a folder should ask about branch allocation early, while keeping payment and personal information inside verified bank channels.
Continue Exploring
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FAQ
When can I obtain the notes?
The issue becomes available from 21 December 2026.
How much does each banknote cost?
Each THB100 note exchanges at its THB100 face value through participating banks.
Is the souvenir folder required?
No. The folder is optional and costs THB10 per set while supplies last.
Practical Information
Exchange begins on 21 December 2026 through commercial banks, Government Savings Bank, BAAC, Government Housing Bank and the Islamic Bank of Thailand. Confirm branch stock, limits and identification rules directly. The notes are THB100 each, while the optional folder is THB10 per set.