Starting 20 March 2016, foreigners who overstay in Thailand for more than 90 days will be banned from re-entering the country as part of the immigration bureau’s new measure to tighten up security against ill-intent elements.
Under the new measure, foreigners overstaying in Thailand who willingly surrender to the authorities will be treated differently from those who are arrested and prosecuted in the way that the period of banning from re-entering will be different.
In case of voluntary surrender, those who overstay for more than 90 days will be banned from re-entering for one year; overstay for more than a year, more than three years and more than five years will face a ban of three, five and ten years respectively.
In case of arrest and prosecution, foreigners who overstay less than one year will face a ban of five years and ten years for overstaying more than a year.
Hotels, apartments, hostels or house owners who rent their houses or rooms to foreigners will be asked to report the stay of foreigners to the nearest immigration offices through the internet so that officials can keep track of their stay in the kingdom.
Source: http://englishnews.thaipbs.or.th/content/151358