I was just thinking that since we are teaching online to students who are outside Thailand so isn't that similar to exporting services and bringing in foreign currency which is actually beneficial for Thai economic.
Just like we don't need to pay taxes for exporting products because that's what any economy would want.
So isn't export of service treated the same way.... 🤔
You need to get a visa cancellation letter from your employer and submit to the immigration for the immigration to put a cancellation stamp and date on your current visa.
Later when you apply for a new visa, there could be problems that you didn't cancel your previous visa
You can cancel your visa 21 days before the visa cancellation letter by giving immigration the visa cancellation letter.
The immigration will put your last date of stay until the visa cancellation date. But, you can exit Thailand before the visa cancellation date too and if you want you can come back on a tourist visa back in just a day.