Where do you go for your first 90-day reporting in Thailand, and can you report online afterwards?

For the first 90-day reporting in Thailand, you must go to the immigration office corresponding to the address on your TM30 registration. This initial report must be done in person. While subsequent reports can theoretically be conducted online, the first report after entering Thailand must always be completed in person. Note that most Digital Nomad Visa (DTV) holders do not typically need to make a second report unless they re-enter the country after their 180-day stay.