1. Visa requirements: You must have a valid visa to stay in Thailand, or re-entry permit, if not
You will have to proceed to apply for Thai visa for purpose of visits such as visa exemption, TR visa, etc at the nearest Thai Embassy or consulate in your residence country.
2. Prepare documents to apply for Certificate of Entry (COE) in which of the following Thai Embassy/Consulate needs:
a. You need to book an Alternative State Quarantine hotel for 15-night of state quarantine.
b. Having e-ticket confirmation/flight details from the airline.
c. Health insurance: Take a health insurance with at least 100,000 USD max coverage, stating also it takes in charge Covid-19.
3. Apply for Certificate of Entry (COE) ONLINE
The COE must be requested at least 7 days before departure for semi-commercial flights.
a. Then please register for COE online through:
*****************************
and filling in your personal information on application form also upload required documents into the system.
b. After submission of COE application, Thai Embassy/Consulate will pre-approve your application within 3 business days.
However, the visa application can be done independently, not waiting for the COE. It takes about a week for COE issuance. 4. Making an appointment for COVID test
You must obtain a COVID-19 lab test result indicating that COVID-19 is not detected by using RT-PCR test, issued not more than 72 hours before departure.
5. Finally almost done with Thailand entry requirement, please prepare the documents are as follows:
a. Valid Thai visa or re‑entry permit.
b. Declaration form
c. Certificate of Entry (COE).
d. Complete T.8 Form (Thailand’s Heath Declaration Form).
e. Medical certificate of COVID-19 Free by RT-PCR must be issued no more than 72 hours before departure.
f. Health insurance covering Covid-19 during the period of your stay in Thailand.
g. ASQ booking confirmation on arrival date.
h. Download the "ThailandPlus" App on your smart phone and complete the registration before travelling
Yes you can convert a Thailand 30 day visa exemption stamp to a retirement visa in-county but your visa must stay valid at least 15 days before converting. Once once the process is done, you will obtain an initial Non-Immigrant O Visa is valid for 3 months then you can proceed to apply for long-term Non-Immigrant (Retirement) O Visa as well :)