On 15 December 2020, the Thai Revenue Department announced further eight-day extensions for submitting tax returns and payments electronically. The previous extension scheme was set to expire on 31 January 2021, but is now prolonged until 31 January 2024.
To be eligible for a grace period of eight-days after the normal deadline, tax returns must be filed via the online system. A taxpayer who first files their returns in paper form and then re-submits them using the online system, or vice versa, will not qualify.