Do I need to keep 500,000 THB in a bank account for 5 years after getting my visa approved?

Once your visa is approved, you are not required to keep the 500,000 THB in your bank account for the entire duration of 5 years. Stakeholders suggest that the funds only need to remain in the account if you plan to apply for an extension while in Thailand. Outside of extensions, initial approval does not necessitate maintaining the full amount continuously.