Siam Commercial Bank (SCBTB)
Thailand / Banking
Active
Issuer Summary
Siam Commercial Bank is a major universal bank in Thailand with a large domestic deposit and loan base, and is the core banking subsidiary of the SCBX group. A high CET1/Tier 1 ratio, deposit-led funding, and systemic importance as a D-SIB confirmed in the annual report support senior issuer credit, while NIM pressure from 2025 onward, retail and SME credit risk, and the SCBX group’s digital and consumer-finance strategy require monitoring. The senior credit has sufficient resilience for investment grade, but government support expectations should not be confused with an explicit guarantee. This is an issuer where bank-only asset quality, PPOP, capital, and liquidity should continue to be monitored.
At present, SCB’s senior issuer credit is at a level that can be adequately maintained for an investment-grade bank. The direction of credit quality is broadly stable, supported by a strong deposit base, high CET1/Tier 1 ratio, and systemic importance as a D-SIB confirmed in the annual report. The probability of rapid credit deterioration is not high, but given the decline in NIM and net interest income from 2025 onward and Thai household and SME credit risk, it is also not possible to say that SCB has entered a phase of strong credit improvement.
Credit quality is supported by SCB’s top-tier domestic banking franchise, deposit-led funding, high regulatory capital, investment-grade ratings, and core status within the SCBX group. The end-2025 total capital ratio of 19.0%, CET1/Tier 1 ratio of 17.9%, loan-to-deposit ratio of 87.0%, and end-March 2026 bank-only total capital ratio of 18.42% indicate that the bank is distant from short-term funding stress or capital shortage.
The largest constraints are the direction of earnings and asset quality. Net interest income declined 10.1% in 2025 and NIM fell to 2.8%. The NPL ratio improved to 3.14%, but remained above the 2.84% level for the Thai commercial banking system, and the coverage ratio of 156.5% was also below the sector average of 183.2%. SCB is a bank that absorbs NIM pressure and domestic small-ticket credit risk through capital and deposits.
Issuer Reports
Current public reports for this issuer.