December 2025 Long Holiday Bank Branch Hours: Which Branches Are Open or Closed?

December, the last month of 2025, is a popular time for many people to take vacation or plan trips during the long holidays. However, those needing to handle financial matters at banks should plan carefully, as there are multiple holidays including 5 December for National Father's Day, 10 December Constitution Day, and year-end holidays from 31 December extending into the New Year.

Thairath Money has compiled and confirmed the operating and closing days of various banks here. Some banks may announce additional details closer to the holidays.

1. Bangkok Bank

- Regular Branches Closed On 5, 6, and 7 December 2025

- Branches in Shopping Malls and Micro Branches in Department Stores Open As usual

Customers can also use the bank’s electronic channels, including Banking Agent services, or inquire at Bualuang Phone 1333 or 02-645-5555.

2. Krungthai Bank

- Regular Branches Closed On 5, 10, 31 December 2025 and 1 January 2026

- Branches in Shopping Malls Open As usual

Customers can use electronic channels or contact Krungthai Contact Center at 02-111-1111.

3. Kasikorn Bank

- Regular Branches Closed On 5, 6, 7, and 10 December 2025

- Branches in Shopping Malls Open As usual

During the long holidays, customers can perform transactions through channels such as ATMs, KPLUS, and K BIZ normally.

4. Siam Commercial Bank

- Regular Branches Closed On 5, 10, 31 December 2025 and 1 January 2026

- Branches in Shopping Malls Open As usual on 5 and 10 December 2025

                       Closed On 31 December 2025 and 1 January 2026

5. Bank of Ayudhya (Krungsri)

- Regular Branches Closed On 5 December 2025

- Branches open Monday to Saturday Closed On 5 December 2025

- Branches in Shopping Malls Open As usual

During the holidays, customers can use ATMs, Krungsri Biz Online, the Krungsri app, or contact 1572. The bank also stated it will announce additional December 2025 holiday dates, such as for 10 December, on 7 December.

6. TMBThanachart Bank (ttb)

- Regular Branches Closed On 5, 10, 31 December 2025 and 1 January 2026

- Branches in Shopping Malls Open As usual on 5 and 10 December 2025

                      Closed On 31 December 2025 and 1 January 2026

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