When a taxi driver a tip should be paid the fare, is an integer or not want to shorten. Passengers should prepare for banknotes, sub taxi travels up because most taxi drivers often don't have change.
Thailand is a world-class tourist attractions. Tipping is a matter of kindness and art, although it's not required to do, but people are willing to receive Thailand? If visitors are not satisfactory and there is no tipping, it won't have a problem.