TPN (Thai Payment Network) / Local SwitchingLocal switching network for Thai debit cards, built on UnionPay technical specifications that the Thai banking sector adopted as its standard. International overviews often overlook it, yet it routes most domestic debit and sets local interchange.National ITMX (with Bangkok Bank, Krungthai, Kasikornbank, and Siam Commercial Bank) · since 2016
Global registry · Asia-Pacific · Southeast Asia
Thailand Payment systems
7 systems listed.
CurrencyThai baht (THB)
RegulatorBank of Thailand (BOT)
Leading payment methods
PromptPay (A2A)Wallets (TrueMoney)CardsCash
E-commerce shares
Account-to-account · 44%Wallets · 25%Cards · 20%Cash · 8%Other · 3%
PromptPay. The national instant rail (2017), a pillar of the “Thailand 4.0” plan: registration by mobile number or national ID card, and QR codes everywhere from floating markets to 7-Eleven. About 44% of Thai e-commerce value goes through A2A (Worldpay GPR 2026).
Registered PromptPay aliases>70M
A2A share of e-commerce≈44% of value (Worldpay GPR 2026)
One of the world’s highest instant payment adoption rates relative to population, ahead of most Western countries.
Learn about this market. The guides and courses that cover it.
Payments in ThailandPayments in Oceania and CanadaPayments in Central AsiaPayments in South Asia outside IndiaPayments in Southeast AsiaPayments in Japan and KoreaAccepting payments in Australia and New ZealandAccepting payments in Indonesia and ThailandAccepting payments in Japan and South KoreaAccepting payments in Southeast AsiaPayments in Asia: super-apps, public rails, and cross-border QROpening a new market: the payments playbook
Card schemes
Instant payments
PromptPayASEAN’s most intensively used instant rail, free below a cap, addressed by mobile number, national ID number, corporate tax ID, or e-wallet ID. Its mandated free tier has wiped out most paid P2P transfers in Thailand.National ITMX (NITMX) (under a mandate from the Bank of Thailand) · since 201727.4 billion transactions worth about $1.6 trillion in 2025, up 12.8% year over year (RTP Dashboard, based on Bank of Thailand data); more than 81 million registrations by mid-2025; a peak of 2.36 billion transactions in a single month
Wallets
เป๋าตัง (Paotang)Thailand’s de facto public wallet: government stimulus and support programs flow through it (Chim Shop Chai, Khon La Khrueng, the state welfare card, the 10,000-baht digital wallet program). The takeaway for practitioners: in Thailand, government transfers run not on central bank infrastructure but through a state-owned commercial bank’s app.Krung Thai Bank PCL (commercial bank controlled by the Financial Institutions Development Fund, which is itself owned by the Bank of Thailand) · since 2018
Interoperable QR
Thai QR Payment (Standardised Thai QR Code)EMVCo national QR standard built on PromptPay, the foundation for almost all of Thailand’s cross-border QR links. Thailand was the first country in the region to roll out these bilateral links at scale.Bank of Thailand / National ITMX · since 2018
Central bank digital currency
Retail CBDC pilot program (Bank of Thailand)DiscontinuedClosed user group pilot run through the full transaction life cycle with financial service providers, then closed. The BOT considers the results positive for innovation but has not moved to issuance. Cite it as a retail CBDC explicitly put on hold.Bank of Thailand · since 2022
Other
BAHTNETThailand’s RTGS system, now migrated to ISO 20022. It settles the net positions of PromptPay and of NITMX’s bulk systems.Bank of Thailand · since 1995
PromptBizInterbank infrastructure that carries the e-invoice, payment, and e-receipt together in ISO 20022 format. The first phase opened on August 29, 2023, with five pilot banks (KTB, BBL, BAY, KBANK, TTB), with Siam Commercial Bank set to follow. The resulting digital footprint is meant to open up SME access to credit based on transaction data.National ITMX Co., Ltd. (Operator of Thailand's interbank switch, supervised by the Bank of Thailand.) · since 2023