Type B business visa
Visa neededTravellers conducting business or attending business conferences.

Thailand visas
Travellers conducting business or attending business conferences.
Holders of passports from the listed countries and territories who also hold an APEC Business Travel Card showing THA on the back.
Passports that qualify (18)
Travellers coming to conduct business or attend business conferences can use a Type B visa.
Eligible APEC Business Travel Card holders with THA on the back of their card can make business visits of up to 90 days without a visa.
Travellers coming to conduct business or attend business conferences can use a Type B visa. Eligible APEC Business Travel Card holders with THA on the back of their card can make business visits of up to 90 days without a visa.
There are 2 options: Type B business visa (a visa from an embassy); APEC Business Travel Card (no visa at all).
Holders of passports from the listed countries and territories who also hold an APEC Business Travel Card showing THA on the back.
Yes. Rules depend on the country that issued your passport. Open the Thailand visa page and choose your passport for a plain answer.
Yes. Officials can refuse a visa or entry, even after you apply. Give true answers, bring the documents asked for, and keep proof of your onward trip and money.
On Thailand's official immigration or foreign ministry website, or at its embassy. Rules change, so check close to your trip.
Often you cannot switch visa type inside the country. Ask the immigration office before you travel if you might need to.
Reviewed by @snuck