What is the process for filing a TM30 and 90-day report in Thailand for expats?

It is important to file a TM30 upon arrival in Thailand unless your landlord or hotel has done it for you. Additionally, you will need to make 90-day reports at your local immigration office. Many users found their experience at the Sisaket immigration office to be friendly and helpful. While there is some confusion regarding who must file the TM30, it is generally understood that it is the landlord's responsibility, not the tenant’s. If you have a yellow book and your spouse owns the property, you may not need a rental contract for immigration purposes.