Tax filing using NDID/ThaID

The Revenue Department in Thailand supports secure online tax filing. Taxpayers authenticate themselves using National Digital ID (NDID) or ThaID credentials. Taxpayers log in to the e-filing portal using their 13-digit personal identification number and OTP- or NDID-based authentication. For NDID-based verification, the user approves the authentication request through their chosen identity provider, such as ThaID or a participating bank app. Upon successful identity verification, individuals file tax returns.