Entry procedures for Thailand, by air or land, are straightforward: you’ll have to show your passport and boarding pass as well as completed arrival and departure cards.
For visitors from most countries, visas are generally not required for stays of up to 30 days.
The Ministry of Foreign Affairs oversees immigration and visa issues. There are frequent modifications of visa regulations so check the website or the nearest Thai embassy or consulate for application procedures and costs. The best online monitor is Thaivisa (www.thaivisa.com).
Visa Exemptions & Visa on Arrival
Thailand has visa-exemption and visa-on-arrival agreements with most nations (including European countries, Australia, New Zealand and the USA). Nationals from these countries can enter Thailand at no charge without pre-arranged documentation. Depending on nationality, these citizens are issued a 14- to 90-day visa exemption. Note that for some nationalities, less time (15 days rather than 30 days) is given if arriving by land rather than air. Check the Ministry of Foreign Affairs website for more details.
Without proof of an onward ticket and sufficient funds for your projected stay, you can be denied entry, but in practice this is a formality that is rarely checked.
Visa Extensions & Renewals
If you decide you want to stay longer than the allotted time, you can extend your visa by applying at the Phuket Immigration Office, just outside Phuket Town. The usual fee for a visa extension is 1900B. Those issued with a standard stay of 15 or 30 days can extend their stay for 30 days if the extension is handled before the visa expires. The 60-day tourist visa can be extended by up to 30 days at the discretion of Thai immigration authorities.